Two substances both exhibit hydrogen bonding Substance A has a boiling point of 78.4°C. Substance B has a boiling point of
100°C. Which statement correctly compares the substances? (1 point)
O Substance A has stronger bonds, and it takes less energy to undergo a phase change.
O Substance B has stronger bonds, and it takes less energy to undergo a phase change.
O Substance B has stronger bonds, and it takes more energy to undergo a phase change.
O Substance A has stronger bonds, and it takes more energy to undergo a phase change.

Answers

Answer 1

Answer: Substance B has stronger bonds, and it takes more energy to undergo a phase change.

Explanation:

Substances with higher boilings have stronger intermolecular forces, and thus require more energy for phase changes to occur.


Related Questions

What is the density of an object if its mass is 10 g and a volume of 2 mL?

Answers

Hi there! Let's solve this problem shall we!

Volume = 10g

      Mass = 2 mL

In this specific problem, they are asking us to find the density of the object. So, using the information given to us (volume and mass), let's solve the problem!

Now, if you remember, D = M ÷ V

So, let's fill in the blanks!

D = Our unknown value

M = 2mL

V = 10g

Here is the filled out formula:

D = M ÷ V

D = 2mL ÷ 10g

D = 5 g/mL

*Make sure you put the units for your final solution!*


If you add 25 g of CaCl2 to 1000. mL of water, what would the concentration of the solution be in grams/liter?

Answers

If you add 25 g of CaCl2 to 1000. mL of water, what concentration of the solution would be 0. 225 grams/liter

What is molarity?

Molarity or molar concentration(M) is defined as the  amount of a substance in a given volume of solution.

It is also known as the moles of a solute in a liter of  the solution.

How to determine the concentration

Formula:

Concentration or molarity = number of moles ÷ volume

The number of moles is derived thus;

Number of moles = mass ÷ molar mass

mass of CaCl2 = 25g and molar mass = 110. 98 g/mol

Number of moles = 25 ÷ 110. 98 = 0. 225 mol

Given the volume = 1000 ml = 1 liter

Concentration = 0.225 ÷ 1 = 0. 225 grams/liter

Therefore, If you add 25 g of CaCl2 to 1000. mL of water, the concentration of the solution would be 0. 225 grams/liter

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Suppose that 0.25M IBr in a flask is allowed to reach equilibrium at 150oC. The equilibrium concentration of Br2 is 0.013 M. Determine the Kc at this temperature. 2IBr(g) ←→ I₂(g) + Br₂(g)

Answers

Suppose that 0.25M IBr in a flask,  the Kc at the given temperature is mathematically given as

Kc=0.00336814413

What is the Kc at the given temperature?

Generally, the equation for Chemical Reaction is mathematically given as

2IBr--->T2+8r_2

Therefore

K={I2*Br2}/IBR^2

K=x^2/(0.25-2x)^2

Kc=0.13M^2/0.224M^2

Kc=0.00336814413

In conclusion,  the Kc at the given temperature

Kc=0.00336814413

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A chemistry student wants to learn how pressure and volume affect one another. They gather a sample of helium from a ballon and measure the initial pressure at 4.5 atm and bounce at 12.1 liters. The students then increases the pressure to 15.2 atm

What’s P1
What’s P2
What’s V2

Answers

P1- 4.5 atm
P2- 15.2 atm
V2- 12.1 liters


Convert 7.50 mol of Li₂O to grams

Answers

Answer:

224.1105 grams is the answer

Which statements about kinetic and potential energy are correct?
Multiple select question.

The kinetic energy of a substance is proportional to temperature.

The potential energy of a substance depends on its composition.

The potential energy of a substance depends in part on the constant random motion of its representative particles.

Chemical systems contain both kinetic energy and potential energy.

Multiple choice

Answers

Answer:

These three are correct:

The kinetic energy of a substance is proportional to temperature.

The potential energy of a substance depends on its composition.

Chemical systems contain both kinetic energy and potential energy.

Explanation:

The decay of a living things allows chemical elements to be lost.

Answers

Answer: is is true

Explanation:

how can noble gas electron configuration be achieved

Answers

Noble gas electron configuration can be achieved by simply sharing valence electrons. If the atom obtains less than 4 electrons, it is most likely to give those electrons away and become an electrically charged ion. If it obtains more than 4, it will share the electrons and reach noble gas configuration.

Why do you think most lampshades are made of translucent materials instead of transparent materials?

Answers

Explanation:

because translucent shades lets the light through easily (gentle diffusion)

b. The sedative Demerol hydrochloride has the formula
C15H22CINO2. How many grams are in 0.025 mole of
Demerol hydrochloride?
Dinitrogen oxide (or nitrous oxide), N₂O, also known as
laughing gas, is widely used as an anesthetic in dentistry.

Answers

The number of grams present in 0.025 mole of Demerol hydrochloride is 7.094 grams.

What is Demerol hydrochloride?

It is a drug used in treating severe or moderate pain.

The moles are given = 0.025

The formula is C₁₅H₂₂CINO₂

The elements that present are C, H, Cl, N, O.

The molecular weight are given:

Carbon: 12.0107

Hydrogen: 1.00784

Chlorine: 35.453

Nitrogen: 14.007

Oxygen: 15.999

Multiply the molecular weight with moles and add them

(15 x 12.0107) + (22 x 1.00784) + (1 x 35.453) + (1 x 14.007) + (2 x 15.999) = 283.79098 grams per mole.

Now, multiply the number of moles given with the total molecular weight

283.79098 x 0.025 = 7.094

Thus, the number of grams are 7.094.

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A dunk tank hold 30,533 moles of water? How many grams of water are in the tank?

Answers

The mass of water in the tank, given the data from the question is 549594 g

Description of mole

The mole of a substance is related to it's mass and molar mass according to the following equation:

Mole = mass / molar mass

How to determine the mass of water in the tank

From the question given above, the following data were obtained:

Mole of water = 30533 molesMolar mass of water = 18 g/mol Mass of water = ?

The mass of the water can be obtained as follow:

Mass = mole × molar mass

Mass of water = 30533 × 18

Mass of water = 549594 g

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How much volume (in cm^3)is gained by a person who gains 11.8 lb of our fat? Human fat has a density of 0.918 g/cm^3

Answers

The volume (in cm³) gained by a person who gains 11.8 lb of fat is 5830.49 cm³

What is density?

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

How to convert pounds to grams

1 lb = 453.592 g

Therefore,

11.8 lb = 11.8 × 453.592

11.8 lb = 5352.3856 g

How to determine the volume Mass = 5352.3856 gDensity = 0.918 g/cm³Volume =?

Volume =  mass / density

Volume =  5352.3856 / 0.918

Volume = 5830.49 cm³

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What is the balanced form of the chemical equation shown below? C12H22O11(I) + O2(g) -> H2O(I)

Answers

[tex]C_{12}H_{22}O_{11} + 12O_2[/tex]  → [tex]12CO_2 + 11H_2O[/tex] is the balanced form of the chemical equation.

What is the balanced equation?

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products.

12 hydrogen, 35 oxygen, and 22 hydrogens are present on both sides of the reaction.

[tex]C_{12}H_{22}O_{11} + 12O_2[/tex]  → [tex]12CO_2 + 11H_2O[/tex]

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The specific heat of aluminum is 0.900 J/g*°C, the specific heat of air is 1.01 J/g*°C and the specific heat of iron is 0.450 J/g*°C.

Identify the correct statement.

Air requires the most energy to increase its temperature followed by iron and then aluminum.
Iron requires the most energy to increase its temperature followed by aluminum and then air.
Air requires the most energy to increase its temperature followed by aluminum and then iron.
Iron requires the most energy to increase its temperature followed by air and then aluminum.

Answers

The correct statement regarding the specific heat capacity of the substance is as follows: air requires the most energy to increase its temperature followed by aluminum and then iron.

What is specific heat capacity?

Specific heat capacity of a substance refers to the amount of thermal energy required to raise the temperature of a system by one temperature unit (1°C or 1K) without any change of phase.

According to this question, the specific heat of different elements are as follows:

Aluminum = 0.900 J/g°CAir = 1.01 J/g°CIron = 0.450 J/g°C

Therefore, it can be said that air requires the most energy to increase its temperature followed by aluminum and then iron.

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Is H2O an acid, ionic, or covalent compound?

Answers

Its a covalent compound because of the low difference in the electronegativity of Hydrogen and Oxygen as they share electrons forming covalent bonds

Answer:

Covalent Compound

Explanation:

H₂O is a covalent compound due to the electronegativity difference between hydrogen and oxygen. Covalent compounds involve elements with similar electronegativity values. Hydrogen has an EN value of 2.2 and oxygen has an EN value of 3.4. These values are not far enough apart to make them form ionic bonds between each other.

While water can act as an acid, it its purest form, H₂O is neutral.

Two moles of gas A spontaneously convert to 3 moles of gas b in a container where the temperature and pressure are held constant. The sample originally took up 13.9L of volume. What is the new volume of the products? Pls show work :)

Answers

At constant temperature and pressure, If the amount of gas increases to the given value, its volume also increases to 20.85L.

What is Avogadro's law?

Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."

It is expressed as;

V₁/n₁ = V₂/n₂

Given the data in the question;

Initial amount of gas n₁ = 2molesInitial volume v₁ = 13.9LFinal amount of gas n₁ = 3molesFinal volume v₂ = ?

V₁/n₁ = V₂/n₂

V₁n₂ = V₂n₁

V₂ = V₁n₂ / n₁

V₂ = (13.9L × 3moles) / 2moles

V₂ = 41.7molL / 2mol

V₂ = 20.85L

Therefore, at constant temperature and pressure, If the amount of gas increases to the given value, its volume also increases to 20.85L.

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Consider the following reversible reaction:
2 CO(g) + O₂(g) 2CO₂(g). Describe a way to increase the CO concentration at equilibrium. Explain your reasoning.

Answers

The given equilibrium reaction indicates the reaction between carbon monoxide and the oxygen and forms carbon dioxide. In this reaction, by increasing the concentration of the carbon monoxide, the equilibrium shifts towards the right. Since, the reactant concentration increases, the equilibrium stress decreases the concentration of the reactants and therefore, the equilibrium shift towards the right side of the equation.

reaction indicates that carbon monoxide reacts with oxygen and forms carbon dioxide gas.

By increasing the concentration of carbon monoxide image, the equilibrium in the reaction shifts towards the right.

The effect of change of pressure, concentration and temperature on the state of equilibrium can be predicted with the help of a principle known as Le Chatelier's principle. Here by increasing the concentration of CO₂, the amount of CO formation can increase.

What is Le Chatelier's principle?

If a system in equilibrium is subjected to a change in concentration, pressure or temperature, the equilibrium shifts in the direction that tends to reduce or to counteract the effect of change. When the concentration of any substance in equilibrium is increased, the equilibrium shifts in the direction which decreases the concentration of that substance.

On other hand, increasing the concentration of any of the products results in shifting the equilibrium in the backward reaction forming more products. So here increasing the amount of CO₂, shifts equilibrium in the backward direction and forms more amount of CO.

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The liquid iodomethane has a density of 2.28 g/mL at 20.0°C. If a 109 gram sample of this compound is needed, what volume of the liquid at 20.0°C must be provided?

Answers

FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

the density (g/ml) of 6 pennies with a mass of 18.53 grams and a volume of 2.0 ml

Answers

Answer: 9.27 g/mL

Explanation:

[tex]d=\frac{m}{v}=\frac{18.53}{2.0}=\boxed{9.27 \text{ g/mL}}[/tex]

How many grams of carbon monoxide must be placed into a 40.0 l tank to develop a pressure of 965 mm hg at 23 C?

Answers

The mass of carbon monoxide, CO that must be placed in the 40 L tank is 58.52 g

How to determine the mole of COVolume (V) = 16.8 L Pressure (P) = STP = 965 mmHg = 965 / 760 = 1.27 atmTemperature (T) = 23 °C = 23 + 273 = 296 KGas constant (R) = 0.0821 atm.L/Kmol Number of mole (n) =?

n = PV / RT

n = (1.27 × 40) / (0.0821 × 296)

n = 2.09 moles

How to determine the mass of COMolar mass of CO = 28 g/moleMole of CO = 2.09 molesMass of CO = ?

Mass = mole × molar mass

Mass of CO = 2.09 × 28

Mass of CO = 58.52 g

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In a boys hostel, 1206 eggs were bought for breakfast for the students. How many moles of eggs does this represent?

Answers

Answer:

6.022×1023

Here, it has been asked how many eggs are in one mole of eggs. The eggs represent the unit which can be atom, ion or molecule. So by the definition of mole, 6.022×1023number of eggs are present in one mole of eggs.

In a boys hostel, 1206 eggs would represent 1206 moles of eggs, assuming an average molar mass of 50 grams/mol.

How to calculate mole

To determine the number of moles of eggs,  first know the molar mass of eggs or the average molar mass of the components in eggs.

Since the composition of eggs can vary, assume an average molar mass based on the most abundant components.

The molar mass of an egg can be estimated to be around 50 grams/mol. This estimate takes into account the approximate composition of eggs, which consists mainly of water, protein, fat, and other components.

Next, convert the mass of eggs to moles.  1 mole of a substance contains Avogadro's number of molecules or entities, which is approximately [tex]6.022 *10^23.[/tex]

Let's calculate the number of moles of eggs:

Mass of eggs = 1206 eggs * 50 grams/egg

= 60300 grams

Moles of eggs = Mass of eggs / molar mass of eggs

= 60300 grams / 50 grams/mol

= 1206 moles

Therefore, 1206 eggs would represent approximately 1206 moles of eggs, assuming an average molar mass of 50 grams/mol.

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Could really use a few pointers on this question!

Answers

From the calculations, we can see that the theoretical yiled of NO2 is 100L of NO2

What is the theoretical yield?

The theoretical yield is that calculated from the stoichiometry of the reaction.

We can see that 1 mole of O2 produced 2 moles of NO2. Thus;

2.23 moles of O2 will produce 4.46 moles of NO2

Since 1 mole of NO2 occupies 22.4 L

4.46 moles of NO2 occupies 100L of NO2

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Why does silver not react with cold water? Reference to the reactivity series

Answers

Answer:

Silver does not react with cold water, because as in the Reactivity Series, Silver is highly unreactive/least reactive metal.

Answer:

Because silver is inert towards cold water.

Cattle egrets are birds that follow behind grazing cattle. The egrets eat the bugs that fly out of the grass as the cattle walk through. Which statement describes the relationship between the cattle egrets and the cattle?

A
predation, because the cattle egrets eat the bugs

B
mutualism, because both the cattle egrets and the cattle benefit

C
commensalism, because the cattle egret benefits, but the cattle neither benefits nor is harmed

D
parasitism, because the bugs might have bit the cattle egrets or the cattle and caused them harm

Answers

Answer: I think it's

The answer is C. commensalism. The egret doesn’t help nor does it harm the cattle, and just benefits off of it.

The relationship would be mutual if the egret did something extra, like eat bugs from off of the cattle. That way they would both benefit because the egret gets a snack and the cattle gets a free cleaning.

What is the number of molecules in CaCo3

Answers

Answer:

Solution — Molar mass (Molecular mass in gram) of CaCO3 = 40+12+3×16 = 100 g No. of moles of CaCO3 = No. of molecules/Avogadro constant = 6.022 × 1023/ 6.022 × 1023 = 1 mole Mass of CaCO3 = No. of moles × molar mass = 1 × 100 g = 100 g.

Explanation:

The mass of ethylene glycol (molar mass 62.1 g / mol), the main component of the antifreeze, must be added to 10.0 L of water to obtain a solidified solution at -23 ° C. Assume a water density of 1 g / mL.

Answers

refer the attachment

If it is correct so mark as brainlest answer!

1. What will happen to your melting point range if you fill the capillary tube almost all the way to the top?

Answers

If you fill the capillary tube all the way to the top, it will become difficult to obtain a sharp melting point.

What is melting point?

The melting point of a solid is the temperature at which a solid is changed into a liquid upon application of heat.

If you fill the capillary tube all the way to the top, it will become difficult to obtain a sharp melting point thus it should be filled only  to about 2 - 3 mm.

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FLAG A nurse is preparing to administer morphine 0.05 mg/kg intermittent IV bolus to a newborn who weighs 3 kg. Available is morphine 0.5 mg/mL injection. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.) ​

Answers

The quantity of morphine, the nurse should administer is 0.3 ml.

What is morphine?

Morphine is a drug which comes under the pain relieving drugs.

The quantity of morphine is 0.05 mg/kg

The weight of the baby is 3 kg.

Available morphine is 0.5 mg/mL.

0.05 x 3 = 0.15 mg

then, 0.15 mg / 0.5 = 0.3

Thus, the quantity of morphine, the nurse should administer is 0.3 ml.

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You titrate 25.0 mL of HCl solution of an unknown concentration with a 0.190 M NaOH solution. Complete neutralization of the HCl solution requires the addition of 24.6 mL of titrant.

Answers

A titration is defined as 'the process of determining the quantity of a substance A by adding measured increments of substance B, the titrant, with which it reacts until exact chemical equivalence is achieved (the equivalence point)'.

The Molarity of the HCl Solution requires the addition of 24.6 mL of titrant is 0.0836 M (to 3 significant figures)

What is Titrant?

A reagent solution of precisely known concentration that is added in titration

Given reaction HCl + NaOH ===> NaCl + [tex]H_2O[/tex]  neutralization reaction

Note that the mole ratio is 1:1 meaning that 1 mole HCl reacts with 1 mole NaOH to produce 1 mole NaCl and 1 mole [tex]H_2O[/tex]

Find moles of NaOH used:

18.45 ml x 1 L/1000 ml x 0.085 mol/L = 0.002091 moles NaOH used

This meant that there must be 0.002091 moles of HCl present in the 25.0 mls.

We want to find the molarity (M) which is moles HCl/liter of solution.  We know the moles, and we also know the liters of solution (25.0 mls x 1 L / 1000 mls = 0.025 liters)

M = 0.002091 moles HCl / 0.025 liters = 0.08364 M = 0.0836 M (to 3 significant figures)

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URGENT HELP NEEDED!!! SPACE
Record your observation statements from Space Academy.

When the mass of the sun is larger, Earth moves around the sun at a faster (faster, slower) pace.
When the mass of the sun is smaller, Earth moves around the sun at a slower (faster, slower) pace.
When Earth is closer to the sun, its orbit becomes faster (faster, slower).
When Earth is farther from the sun, its orbit becomes slower (faster, slower).

For each trial, record the orbit number of each planet from the sun. Be sure to indicate the number of planets in the habitable zone after each trial. Create a different configuration of planets for each trial. An example has been supplied for you.

Orbit Number
Planet One Orbit Number
Planet Two Orbit Number
Planet Three Orbit Number
Planet Four Number of planets in the habitable zone Number of planets left in successful orbit
Example: sun's mass 1x
1

3

5

6

1

2

sun's mass 1x—Trial One
1

5

2

3

1

1

sun's mass 1x—Trial Two
1

2

0

0

2

2

sun's mass 2x—Trial One
1

0

0

0

1

0

sun's mass 2x—Trial Two
1

3

2

0

4

0

sun's mass 3x—Trial One
1

2

0

0

2

0

sun's mass 3x—Trial Two
1

0

0

0

1

3

Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.

Using two to three sentences, summarize what you investigated and observed in this lab.
You completed three terra forming trials. Describe the how the sun's mass affects planets in a solar system. Use data you recorded to support your conclusions.
In this simulation, the masses of the planets were all the same. Do you think if the masses of the planets were different, it would affect the results? Why or why not?
How does this simulation demonstrate the law of universal gravitation?
It is the year 2085, and the world population has grown at an alarming rate. As a space explorer, you have been sent on a terraforming mission into space. Your mission to search for a habitable planet for humans to colonize in addition to planet Earth. You found a planet you believe would be habitable, and now need to report back your findings. Describe the new planet, and why it would be perfect for maintaining human life.

Answers

The new planet is suitable for human life because it is similar to planet earth.

Describe the new planet, and why it would be perfect for maintaining human life?

The new planet has similar atmosphere just like the earth's atmosphere. It has large amount of vegetation that can hold large amount of animals. It is suitable for growing for different crops that provide food to humans.

So we can conclude that the new planet is suitable for human life because it is similar to planet earth.

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NEED HELP,THANKS!!!!!!! How many people did jack the ripper murder Which of the following are line segments shown in the drawing? The data in this table represents the production of frozen dessert in millions of gallons per month. This data was then graphed in a Bar Graph. Which statement describes why the Bar Graph is not properly drawn? A. The number of desserts represented by each bar is incorrect. B. The intervals along the vertical axis are unequal. C. Not all of the types of frozen desserts are represented in the Bar Chart. D. The width of the bar representing Regular Ice Cream is more than the width of the other bars. A beverage company produces cans of lemonade. According to the label a can contains a volume of 375mL of lemonade. A consumer group tested this claim by measuring the volume of lemonade in 2,500 cans. They found that the volume was normally distributed with a standard deviation of 5mL and a mean of 372mL. If a can is chosen at random, find:P (its volume is 382mL) which statement best explains how cellear resperation helps maintain homeosits in anamals What is the total number of different 10-letter arrangements that can be formed using the letters in the word FORGETTING? Serena constructed a wire barrier to protect her tomato plant from squirrels. The barrier is 2.5 feet from the tomato plant in every direction.Which statement describes the shape of the barrier?A. a circle with a radius of 5 feetB. a square with diagonals 5 feet longC. a circle with a diameter of 5 feetD. a square with sides 5 feet long Which statement is true about education or training beyond high school? Employers do not offer it so workers must pay for any program themselves. For most people it is out of reach as there is little help available for funding. It is associated with higher salaries and total earnings over a person's lifetime. There is no evidence that it affects a person's job satisfaction or earning potential. I went for a walkis this sentence simple sentence, Compound sentence or a complex sentence? Directions: Write four sentences of your own illustrating the first two subject-verb agreement rules.RULE 1Sentence 1: _____________________________________________________________________________Sentence 2: _____________________________________________________________________________RULE 2Sentence 3:______________________________________________________________________________Sentence 4:______________________________________________________________________________pa help gois, kailngnq na po tlga eh! The Japanese emperor regains power in the Meiji Restoration. ?Which statement best completes the diagram?A. Japan greatly reduces the size of its military to invest in industrializing its economy. B. Japan attempts to remodel its society to more closely resemble the United States and Europe. C. Japan creates a rigid class system that organizes all citizens into a social hierarchy. D. Japan cuts off political relationships and trade agreements with its neighbors in East Asia. Conjugate each reflexive verb in the preterite tense. Yo ___________ (vestirse) el aquel vestido.Jairo __________ (probarse) los guantes de cuero. Nosotras ___________ (cepillarse) el pelo antes de llevar los sombrero Highlight details about karim. it's true that karim did everything the master wanted and that he supervised us, because otherwise he would have had nowhere to go and nothing to eat, but he would never have had the courage to peek into the master's windows. iqbal, francesco dadamo use the details you highlighted to answer the questions. what inference can be made about karim, based on the details in the passage? is this an example of direct or indirect characterization? Intercontinental, Incorporated, uses a perpetual inventory system. Consider the following information about its inventory: August 1, purchased 10 units for $910 or $91 per unit; August 3, purchased 15 units for $1,590 or $106 per unit; August 14, sold 20 units; August 17, purchased 20 units for $2,300 or $115 per unit; August 28, purchased 10 units for $1,190 or $119 per unit; August 30, sold 23 units. Using weighted average, the cost of goods sold for the sale of 23 units on August 30 is ____ and the inventory balance at August 30 is What is the acronym of COMPUTER What would you expect to happen to your Expiratory Reserve Volume when you are treading water in a lake Which of these is not a possible r-value?A. 1.2B. -0.1OC. 0.5D. -0.75 If x=-3 and 2x+5y=-1 what is the value of y? Write a rule to describe the transformation