during the process of photosynthesis, green plants produce...

Answers

Answer 1

Answer: photosynthesis

Explanation:

Answer 2
they use carbon dioxide and energy from the sun to make sugar molecules and oxygen

Related Questions

what are the most common measurements used to describe gases in chemistry

Answers

tempature, volume , amount , pressure

Four quantities must be known for a complete physical description of a sample of a gas: temperature, volume, amount, and pressure. ... The height of the mercury column is proportional to barometric pressure, which is often reported in units of millimeters of mercury (mmHg), also called torr.

Use the drop-down menus to classify each of the following as an addition, substitution, elimination, or
condensation reaction.
CH3CHO+H2O → CH3OCH3
CH,CICH CI + Zn → C2H4 + ZnCl2
CH3CH3Br + OH – CH3CH3OH + Br
2CH2COOH
>>
(CH3CO)20 + H20

Answers

Answer:

CH3CHO+H2O → CH3OCH3 - addition

CH,CICH CI + Zn → C2H4 + ZnCl2 - elimination

CH3CH3Br + OH – CH3CH3OH + Br - substitution

2CH2COOH >>(CH3CO)20 + H20 - condensation

Explanation:

An addition reaction is a reaction in which a specie is added across the double bond as we can see in CH3CHO+H2O → CH3OCH3.

In an elimination reaction, a small molecule is lost from a saturated compound to form the corresponding unsaturated compound as in CH,CICH CI + Zn → C2H4 + ZnCl2

In a substitution reaction, a chemical moiety replaces another in a molecule as in; CH3CH3Br + OH – CH3CH3OH + Br .

A condensation reaction is in which two molecules are joined together to form a bigger molecule as in; 2CH2COOH >>(CH3CO)20 + H20.

Answer:

addition

elimination

substitution

condensation

A solution made by dissolving 9.81 g of a nonvolatile, nonelectrolyte in 90.0 g of water boiled at 100.37 °C at 760 mm Hg. What is the molar mass of the substance? [kp = 0.51 °c/m]

Answers

Answer:

151 g/mol

Explanation:

In order to solve this problem we need to keep in mind the formula for the boiling point elevation:

ΔT = Kb * m * i

Where:

ΔT is the temperature difference between the boiling point of the solution and that of pure water. 100.37 °C - 100.00 °C = 0.37 °C.m is the molarity of the solutioni is the van't Hoff factor. As the solute is a nonelectrolyte, the factor is 1.

Input the data and calculate m:

0.37 °C = 0.51 °C/m * m * 1 m =0.72 m

We now can calculate the number of moles of the substance, using the definition of molarity:

molarity = moles of solute / kg of solvent

In this case kg of solvent = 90.0 g / 1000 = 0.090 kg

0.72 m = moles / 0.090 kgmoles = 0.065 mol

Finally we calculate the molar mass, using the number of moles and the mass:

9.81 g / 0.065 mol = 151 g/mol

Question 8 (5 points)
(08.02 MC)
A 10 M concentrated stock solution of NaCl was used to prepare 5 liters of diluted 1 M solution. Which of the following statements is true about
the
process used to achieve this required dilution? (5 points)
O a
The volume of stock solution used was less than 0.4 liters.

The volume of stock solution used was more than 5 liters.
Ос
The volume of the solvent used was less than 0.4 liters.
Od
The volume of the solvent used was less than 5 liters.

Answers

Answer:

d . The volume of the solvent used was less than 5 liters.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to calculate the volume of the stock (initial) solution by using the following equation:

[tex]M_1V_1=M_2V_2[/tex]

Thus, we solve for, V1, which stands for the aforementioned volume of stock solution:

[tex]V_1=\frac{M_2V_2}{M_1}[/tex]

Then, we plug in to obtain:

[tex]V_1=\frac{5L*1M}{10M}\\\\V_1=0.5L[/tex]

Now, since the final volume was 5 L, we can infer that the volume of solvent is 4.5 L and that of the stock solution 0.5 L for a total of 5 L of diluted solution; therefore, the correct reasoning is d . The volume of the solvent used was less than 5 liters.

Regards!

Answer:

The volume of the solvent is less than 5

Explanation:

For a phase change, H0 = 2 kJ/mol and A S0 = 0.017 kJ/(K•mol). What are
AG and the spontaneity of the phase change at 500 K?

Answers

Answer:

ΔG = -6.5kJ/mol at 500K

Explanation:

We can find ΔG of a reaction using ΔH, ΔS and absolute temperature with the equation:

ΔG = ΔH - TΔS

Computing the values in the problem:

ΔG = ?

ΔH = 2kJ/mol

T = 500K

And ΔS = 0.017kJ/(K•mol)

Replacing:

ΔG = 2kJ/mol - 500K*0.017kJ/(K•mol)

ΔG = 2kJ/mol - 8.5kJ/mol

ΔG = -6.5kJ/mol at 500K

in
What are common features in
relation to electron arrangement
across a period and down a group
Igor s elements on the periodic
table.​

Answers

Answer:

The order of sub-energy levels ( s » p » d » f )

The number of orbitals ( s » 2 ), ( p » 6), ( d» 10), ( f » 14 )

El agua del mar contiene aproximadamente un 3,0 % m/v de sal (NaCl, 58,44 g/mol), (asuma que es la única fuente de cloruros) si una fábrica de baterías para carro provoca un derrame de material con plomo(II). La concentración máxima (en g/L) de plomo(II) que puede contener el agua marina es:_______________
Kps=1,6x10^5

Answers

Answer:

s = 4.41 g/L.

Explanation:

¡Hola!

En este caso, considerando el escenario dado, se hace necesario para nosotros saber que la posible reacción de disociación la experimenta el cloruro de plomo (II) como se muestra a continuación:

[tex]PbCl_2(s)\rightleftharpoons 2Cl^-(aq)+Pb^{2+}(aq)[/tex]

Lo cual hace que la expresión de equilibrio se calcule como:

[tex]Ksp=[Pb^{2+}][Cl^-]^2[/tex]

Y que en términos de la solubilidad molar, s, se resuelve como:

[tex]1.6x10^{-5}=s(2s)^2\\\\1.6x10^{-5}=4s^3\\\\s=\sqrt[3]{\frac{1.6x10^{-5}}{4} } \\\\s=0.0159molPbCl_2/L[/tex]

Ahora, convertimos este valor a g/L al multiplicarlo por la masa molar del cloruro de plomo (II):

[tex]s=0.0159molPbCl_2/L*\frac{278.1gmolPbCl_2}{1molmolPbCl_2} \\\\s=4.41g/L[/tex]

¡Saludos!

A molecule or ion that donates the hydrogen in a hydrogen bond is a hydrogen bond donor

a. True
b. False

Answers

Answer:

True

Explanation:

Hydrogen bonding is a type of intermolecular interaction that occurs when hydrogen is bonded to a highly electronegative atom.

We define the term ''hydrogen bond donor'' as the molecule that supplies the hydrogen atom in the hydrogen bond.

Hence, it is true that the molecule or ion that donates the hydrogen in a hydrogen bond is a hydrogen bond donor

HELP WITH MY 2 QUESTION
1-What type of packaging is used for milk?
2-How do the physical and chemical properties (material, reactivity, shape, hardness, color)
of each packaging type help create new and better product?

Answers

Answer:

1. Milk comes in a range of sizes and forms, and is packaged in a range of materials. Glass bottles, plastic coated paper board, blow mold nonreturnable polyethylene containers, plastic pouches, and returnable rigid polycarbonate containers are among the commercial containers available.

Dont know the answer to the second one sorry :(

Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222 is 3.82 days. If you begin with 35.3 mg of this isotope, what mass remains after 10.1 days have passed

Answers

Answer:

5.65mg of the isotope remains

Explanation:

The radioactive decay follows the equation:

Ln[A] = -kt + ln[A]₀

Where [A] is amount of the isotope after time t, k is decay constant, and [A]₀ is initial amount of the isotope.

k = ln 2 / Half-life

k = ln 2 / 3.82 days

k = 0.18145days⁻¹

Replacing:

Ln[A] = -0.18145days⁻¹*10.1days + ln[35.3mg]

ln[A] = 1.7312

[A] = 5.65mg of the isotope remains

aluminum chloride and bubbles of hydrogen gas are produced when metallic aluminum is placed in hydrochloride acid. what is a balanced equation for this reaction?

Answers

Answer:

AlCl3 + HCl ===> AlCl4 +H-

Based on your knowledge of factors affecting the rate of reaction, why is there a danger of explosions in places such as flour mills and coal mines where there are large quantities of powdered, combustible materials? 

Answers

The large quantities of powdered, combustible materials in silos and coal mines would equate to a higher concentration of materials and technically, a higher surface area. Coincidentally, these places often harbor higher temperatures, increasing the collision frequency. With these three factors combined, there would be an increased reaction rate and this case, a quicker rate for the combustible materials to be released in the form explosions.

Consider the dehydration of 2-propanol in sulfuric acid: There is a scheme of a reaction where CH3 CH CH3 with an OH group attached to the second carbon atom dehydrated in the presence of H2SO4. Draw the structure for the product of the dehydration of 2-propanol.

Answers

Answer:

CH2=CH-CH3

Explanation:

One of the ways of preparing alkenes is by dehydration of alcohols using sulphuric acid. The sulphuric acid merely acts as a catalyst in the process.

It begins with the protonation of the -OH group. This is followed by loss of water molecule since water is a good leaving group.

Loss of a proton now completes the mechanism and regenerates the acid catalyst.

The mechanism of dehydration of 2-propanol as well as the product formed in the process is shown in the image attached to this answer.

why Hydroxide ion is less strong base than hydride ion​

Answers

Answer:

The hydride ion,H−is a stronger base, so it will abstract a proton from the water. As the water will give protons, so water will work as an acid and an acid-base reaction will take place. Hydride ions get protons from water and form hydrogen gas and hydroxide ions.

Sodium hydride is the chemical compound with the empirical formula NaH. This alkali metal hydride is primarily used as a strong yet combustible base in organic synthesis. NaH is a saline (salt-like) hydride, composed of Na+ and H− ions, in contrast to molecular hydrides such as borane, methane, ammonia, and water.

the other answer is correct, replying so you can give them brainliest asap! :)

The pH for several solutions is given below. After filling in each blank with the correct number, arrange the substances mentioned at the beginning of each sentence in order from most acidic to most alkaline.
a. Black coffee has a pH of 5, therefore its H+ concentration is __________times greater than a solution with a pH of 10
b. Urine has a pH of 6, therefore its H+ concentration is ________times greater than a solution with a pH of 9.
c. Household ammonia has a pH of 11, therefore its H+ concentration is__________ times less than a solution with a pH of 7 .
d.Grapefruit juice has a pH of 3, therefore its H+ concentration is_______ times greater than a solution with a pH of 5 .
2
100
1000000
4
100000
10
3
100,000
1000
5

Answers

how

the

Way

of

it's

the Base

For an aqueous solution of sucrose (C12H22O11), determine:

the number of moles of sucrose in 1.50 L of this solution

Answers

Answer:WHAT GRADE WORK IS THIS ?

Explanation:

An example of competition between members of two different species is
A) mold growing on a dead tree that has fallen in the forest
B) purple loosestrife plants growing in the same wet areas as cattail plants
C) a coyote feeding on the remains of a deer that died of starvation
D) two male turkeys displaying mating behaviors to attract a female turkey
Pls help

Answers

Answer:

B) purple loosestrife plants growing in the same wet areas as cattail plants

Explanation:

Competition between members of two species means that two different species are "fighting for" or desire the same resource. This resource could be shelter, food, territory, etc.

An organism cannot compete if it is already dead, so that eliminates answer choices A and C. Answer choice D is wrong because these are two organisms of the same species.

Answer choice B is correct because there are two different species competing for one area of land.

For the reaction...
H2 (g) + Cl2 (g) <=> 2HCl (g) + heat
If the pressure in the system is increased, the equilibrium position will _______.

a)shift to the left
b)shift to the right
c)not shift position at all as 2 mol gas <=> 2 mol gas

Answers

Answer:

A: Shift to the left

Explanation:

The reaction would try to use up the added heat by making more H 2 and Cl 2.

Look at the equation CO2 + H2 = CO + H20.

CO is a ________

reactant and a product

reactant

product​

Answers

Answer:

CO is considered as a product.

Explanation:

A general chemical equation for a combination reaction follows:

To write a chemical equation, we must follow some of the rules:

The reactants must be written on the left side of the direction arrow.

A '+' sign is written between the reactants, when more than one reactants are present.

An arrow is added after all the reactants are written in the direction where reaction is taking place. Here, the reaction is taking place in forward direction.

The products must be written on the right side of the direction arrow.

A '+' sign is written between the products, when more than one products are present.

For the given chemical equation:

are the reactants in the reaction and  are the products in the reaction.

Hence, CO is considered as a product.

what is the enthalpy of the overall chemical reaction

Answers

Answer:

For a chemical reaction, the enthalpy of reaction (ΔHrxn) is the difference in enthalpy between products and reactants; the units of ΔHrxn are kilojoules per mole

With the temperature held constant at 300 K, use the Select mass slider to place weights on the lid. Record the pressure and volume of the gas for each added mass.
Added mass on the lid Total mass Pressure Volume
(Lid + added mass)
0 kg 10 kg
10 kg 20 kg
20 kg 30 kg
30 kg 40 kg

Answers

Solution :

When the temperature is held constant at 300 K, we can use the Select mass slider in order to place the weights on the lid. And we record the pressure and also the volume of the gas for each of the added mass.

Added mass  on the lid       Total mass               Pressure             Volume

          0 kg                                10 kg                    98.1 [tex]N/m^2[/tex]         [tex]2.54 \ m^3[/tex]

          10 kg                               20 kg                   [tex]196.2 \ N/ m^2[/tex]          [tex]1.27 \ m^3[/tex]

          20 kg                              30 kg                   [tex]294.3 \ N/ m^2[/tex]          [tex]0.85 \ m^3[/tex]

          30 kg                               40 kg                   [tex]392.4 \ N/ m^2[/tex]          [tex]0.43 \ m^3[/tex]

As the pressure increases at a constant temperature, the volume of the gas decreases.

Thus we can see that the pressure is inversely proportional to the volume.          

What is leukemia
A
B
C
D

Answers

C. Cancer that affects the blood

Hope I could help!

g The activation energy for diffusion depends on the strength of atomic bonds. Higher strength bonds result in higher activation energies. How do you predict the activation energy for self diffusion will be related to melting temperature

Answers

Answer:

Yes, the activation energy for self diffusion is related to melting temperature.

Explanation:

The activation energy for self diffusion is related to melting temperature because bonds result due to activation energies and we know that bonds are break down when the temperature is increases and as a result the solid substance melts and change into liquid state. When the bonds between atoms are broken down with the use of heat energy the state of matter changes so we can say that activation energy is related to temperature.

A 29.00 mL sample of an H2SO4 solution of unknown concentration is titrated with a 0.1122 M KOH solution. A volume of 43.22 mL of KOH was required to reach the equivalence point.
What is the concentration of the unknown H2SO4 solution? Express your answer using four significant figures.

Answers

Answer: The concentration of the unknown [tex]H_{2}SO_{4}[/tex]  solution is 0.167 M.

Explanation:

Given: [tex]V_{1}[/tex] = 29.00 mL,     [tex]M_{1}[/tex] = ?

[tex]V_{2}[/tex] = 43.22 mL,       [tex]M_{2}[/tex] = 0.1122 M

Formula used to calculate concentration of the unknown [tex]H_{2}SO_{4}[/tex] solution is as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]

Substitute the values into above formula as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}\\M_{1} \times 29.00 mL = 0.1122 M \times 43.22 mL\\M_{1} = 0.167 M[/tex]

Thus, we can conclude that concentration of the unknown [tex]H_{2}SO_{4}[/tex]  solution is 0.167 M.

Determine the Concentration of the Unknown Strong Acid
In this activity you will use the virtual lab to determine the concentration of a strong monoprotic acid. To do this, you can perform
a titration using NaOH and phenolphthalein found in the virtual lab. (Note: The concentration of the acid is between 0.025M and
2.5M so you will need to dilute the NaOH solution so that the volume to reach the endpoint is between 10 and 50 mL).
Once you have determined the concentration of the acid, please enter your answer into a form at the bottom of this page.
Virtual
Lab
File -
Edit -
View
Help -
EN
Unknown Acid Problem
Stockroom
Workbench 1
Solutions
Glas
Tools
MacBook Pro
888
%
&

Answers

Hey baby I know it’s late but I wanted to say how are u doing

The reduction of carbon dioxide by hydrogen gas takes place at 420°C to produce water vapor and carbon monoxide. The equation for
this reaction at equilibrium is shown below.
H2(g) + CO2(g) = H2O(g) + CO(g)
Which of the following changes in concentration occur when more water vapor is added to the system under equilibrium conditions?
O A [Hz] decreases, [CO] decreases, [CO] increases
OB (H) increases, (CO2) increases, [CO] decreases
OC [Hz, increases, [CO2, increases, [CO] increases
D. [H2, decreases, [CO] decreases, [CO] decreases

Answers

C try it and see if it works

molar mass of Beryllium

Answers

Answer:

The molar mass of Beryllium is 9.012182 u

Which of the following compounds is composed of Al,Si,O and H

A.Epsom salt

B.Limestone

C.Clay

D.Urea

Answers

Explanation:

the answer is clay as seen from the picture

A typical dollar bill is 15.50 cm by 6.50 cm.
Calculate the surface area in square meters, square centimeters and square nanometers

Answers

Answer:

0.010075 m²100.75 cm²1.0075x10¹⁶ nm²

Explanation:

As the measurements are given to us in centimeters, let's start by calculating the surface area in square centimeters:

Area = 15.50 cm * 6.50 cm = 100.75 cm²

Now we convert 100.75 cm² to m², as follows:

100.75 cm² * [tex](\frac{1m}{100cm}) ^2[/tex] = 0.010075 m²

Finally we convert 0.010075 m² to nm², as follows:

0.010075 m² * [tex](\frac{1nm}{1x10^{-9}m}) ^2[/tex] = 1.0075x10¹⁶ nm²

Which is most likely the reason the U.S government made such an investment

Answers

Answer:

The U.S government made such an investment because they're most likely to reduce harmful emissions.

Other Questions
Solve P = 8/3 R + 30 for R. Cones are to _______________ vision as rods are to _______________ vision. A. inverted; extrovertedB. extroverted; invertedC. black and white; colorD. color; black and whiteE. night; day In the reaction below, what is the limiting reactant when 1.24 moles NH3 of reacts with 1.79 moles of NO?4NH_3 + 6NO (right arrow) 5N_2 + 6H_2O1. NO2. H_2O3. NH_34. N_2 Help plz Im confused At Bills Burger Barn, every time you buy a burger there is a one in eight chance of winning a free burger. Nicholas bought a hamburger every day for five days. What is the probability that Nicholas wins 1 free hamburger this week? 25 POINTS PLS ANSWERwhich phrase describes a scientific law A. a statement that can be used to predict the motions of two objects only under special conditions B. An explanation of why the force of gravity exists between two objects C. A claim about the pull between objects that cannot be verified through experimentationD. An equation that can be used to accurately calculate the pull of gravity between two objects Use the sum of cubes identity to write this polynomial expression in factored form:8x3 + 27. Best English translation for signi Read the chart.HOMOPHONE MEANINGby beside or nearbuy to purchase somethingbye expression that is short for goodbyeChoose the correct homophones to complete the sentence.Jiya went to the shop _____ the dentists office to _____ materials for her project.by, buybye, byby, byebye, buy Which of the following statements accurately describes the rock cycle?Question 1 options:A. Sedimentary, igneous, and metamorphic rocks are formed and broken downB. The rock cycle only describes the formation of rocks, not the transportation or depositionC.The rock cycle only describes the formation of rocks above groundD.The rock cycle only describes how igneous rocks are formed Deberan los EE. UU. Enviar tropas para luchar en Corea? The interior angle of a regular polygon is 120. Work out the number of sides of the polygon. Pls help will mark brainliest (15 points!!) please help!! If you can answer the other questions on my page I will Venmo u! Discuss the primary assumptions of Mercantilism. Concretely illustrate how Mercantilist theory influenced both the foreign and domestic policy of ONE European State during the 17th and 18th centuries. Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.Match each pair of points with the approximate distance between them. Round your answers to the nearest tenth. What is the force on the surface of a square of side 5 m if the pressure acting on it is 25 pascal ? Lunar eclipses happen when the _____.moon passes between the Earth and the sunEarth passes between the sun and the moonsun passes between the Earth and the moon The events begin in the and end in the? Please help me with this question...