No help just posting a picture

No Help Just Posting A Picture

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Answer 1
Oh okay I learned a lot.
Stay safe homie

Related Questions

ill attach a picture​

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Answer:

35.50

Explanation:

There are two stable isotopes, 35Cl (75.77%) and 37Cl (24.23%), giving chlorine a standard atomic weight of 35.45

What does the little ‘3’ in 2NH3 mean?

Answers

Answer:

It determines the number of molecules

Answer:

it means there are 3 hydrogen atoms in the compound.

I have no idea how to do this help plz!

Answers

The answes are
C)
Then it is
)A
Im doing this for class too bruh
C A and B D . Sorry if I’m wrong

Why is it important to pasteurize certain liquids?

Answers

Answer:

Pasteurization involves heating liquids at high temperatures for short amounts of time. Pasteurization kills harmful microbes in milk without affecting the taste or nutritional value (sterilization= all bacteria are destroyed).

Explanation:

7. Some products or processes claim to be "chemical free" or say "no chemicals added." Based on your understanding of chemistry, what are the arguments for and against such statements?

Please i need help ​

Answers

Pulongtoy saputong pinkoy ni bingkoy pukyo amen

The meaning behind the statement is that the products does not contains any synthetic and harmful chemicals such as colourants, preservatives etc.

What are synthetic chemicals?

All natural products or materials contains certain kind of chemicals which are naturally made in them. Such chemicals are natural chemicals and does not harm the living or causes any unwanted reaction.

The chemicals which are made by humans for specific purposes are called synthetic chemicals. Which can be of toxic and hazardous. Almost all materials we use everyday such as toothpastes, shampoo, food items, dyes, medicines  and the fertilizers and pesticides we use in agriculture are all chemicals.

These chemicals helps in some way but they can be harmful to life in other way. Some products claim that they are chemical free, may true or not they intending to clear that the product does not contain any synthetic chemical except the required natural chemicals.

To find more about synthetic chemicals, refer the link below:

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The sum of the atomic masses of all the atoms in a compound is called the

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Formula Mass ( sorry need twenty characters)

what causes a change in air pressure

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This change in pressure is caused by changes in air density, and air density is related to temperature.

what happens when exhaled air passes through clear lime water?​

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Huh what type of question is that?!

A gymnast performing a backflip into a cartwheel on a balance beam is am example of ________ force​

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I’m gonna guess equal force sorry if I get it wrong <3

25cm3 of a 0.4M sodium hydroxide solution was diluted into 250cm3 of water. What is the molarityof the resultant solution.

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Answer:

0.04 M

Explanation:

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

Initial volume of solution (V1) = 25 cm³

Initial Molarity of solution (M1) = 0.4 M

Final volume of solution (V2) = 250 cm³

Final Molarity of solution (M2) =?

We can obtain the final Molarity of the solution by using the dilution formula as illustrated below:

M1V1 = M2V2

0.4 × 25 = M2 × 250

10 = M2 × 250

Divide both side by 250

M2 = 10/250

M2 = 0.04 M

Therefore, the resulting molarity of the diluted solution is 0.04 M

What does eggshells change color under the influence of various liquids?

Answers

Answer:Adding calcium to chicken's food is going to make the eggshells firmer. Independent variable:​

Explanation:

Which statement is true about a reaction represented by a chemical equation that shows energy as a reactant?


A.
It absorbs energy.

B.
It releases energy.

C.
It is a replacement reaction.

D.
It is a combustion reaction.

Answers

A. It absorbs energy.
reactants are located on the left side of the equation, meaning energy among with other reactants were needed to get the reaction going, so it absorbed energy, which is also the endothermic process. The opposite of that would be having energy on the right side with the products which means that the reaction would've released energy which is the exothermic process. Hope this helps!

Please Answer ASAP!!
What happens to the velocity of an object when balanced forces act on it?
a.
There will be no change
c.
There will be negative acceleration
b.
There will be positive acceleration
d.
Velocity will change, but not acceleration


Please select the best answer from the choices provided

Answers

Answer:

C. There is a negative acceleration

Explanation:

I majored in Physics

A heat energy of 645 J is applied to a sample of glass with a mass of 28.4 g. Its temperature increases from –11.6 °C to 15.5 °C. Calculate the specific heat of glass.

Answers

Answer:838J/kg/K

Explanation:

use : Q= mS◇ T

What chemical process occurs in cells to release energy?
A.
Oxidation

B.
Respiration

C.
Pespiration

D.
Nutrition​

Answers

Answer:

B. Respiration

Explanation:

cellular respiration is the process where cells use glucose (C6H12O6) and oxygen gas (O2) to make carbon dioxide (CO2) water (H2O) and ATP, which is energy

formula:

C6H12O6 + 6O2 -> 6CO2 + 6H20 + 38ATP  

please help !!!!!!!!!!!

Answers

Answer:

Iron wood is very dense and will sink in water. B

Explanation:

Hope this helps!!

Answer:

B

Explanation:

Which elements are abundant in visible universe

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Hydrogen is the most abundant element in the Universe; helium is second. However, after this, the rank of abundance does not continue to correspond to the atomic number; oxygen has abundance rank 3, but atomic number 8. All others are substantially less common.

HOPE THIS HELPED <3

How does dermal tissue play a key role in transpiration?

Answers

Answer:

Dermal tissue of the stems and leaves is covered by a waxy cuticle that prevents evaporative water loss. Stomata are specialized pores that allow gas exchange through holes in the cuticle. Unlike the stem and leaves, the root epidermis is not covered by a waxy cuticle which would prevent absorption of water.

Explanation:

will mark brainliest!​

Answers

Answer:

Dilute acid + carbonate used in making the salt of copper sulfate.

Explanation:

In this experiment an insoluble metal oxide is reacted with a dilute acid to form a soluble salt.Copper(II) oxide, a black solid, and colourless dilute sulfuric acid react to produce copper(II) sulfate,giving a characteristic blue colour to the solution.

Answer: B. dilute acid + carbonate

Explanation:

An insoluble metal oxide reacts with a diluted acid in order to make a salt.

Copper (II) oxide reacts and the diluted acid react to make Copper (II) sulfate.


A small windmill is to be built at a science competition. A large floor fan is used to power each windmill The task
is to lift a bucket filled with the most number of pennies possible from a height of one meter in one minute.
Which change in decision would most likely increase the weight that the windmill could lift?
A)
Make the fan blades smaller.
B)
Make the arms of the windmill longer,
C)
Make the arms of the windmill shorter
D)
Make the fan blades out of a lighter material.

Answers

Answer:

D

Explanation:

I'm doing USA test prep and I got it right

Answer:

Explanation:

It is D

Make the fan blades out of a lighter material.

In a living cell which process uses up atp

Answers

Answer:

Metabolism

Explanation:

because energy change takes place

what is the net force of 4N 2N!!

Answers

Answer: 4 N-2 N=2 Nto the left. Change in motion: The box will move to the left. 7.)

Explanation: Please mark branliest.

In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium sulfide? Also, state why.
A. one
B. two
C. three
D. four
E. none

Answers

There are 2 lone pairs

Further explanation

Given

a molecule of calcium sulfide

two valence electron of Calcium(Ca)

six valence electrons of Sulfur(S)

Required

number of lone pairs of electrons

Solution

Lewis structure shows the form of bonds that occur in the valence electrons of an element or compound

Valence electrons are electrons used in a chemical bond

To achieve stability, the element S needs 2 more electrons which are obtained from 2 electrons from the Ca element,

A lone pair electrons means refers to an unshared pair of electrons(not bonding to the other atoms)

Could you use filtration on a solution?

Answers

Answer:

No.

Explanation:

This is because a solution is a mixture with two substances that have already dissolved in each other and so there is no residue left. Filtration works such that part of the mixture has smaller particles that can pass through the membrane of the filter paper while the bigger particles get stuck onto the paper as residue. A solution has a uniform size particle throughout and thus filtration does not work for purifying a solution.

what method would you use for your hypothesis.

Answers

Diagram of the scientific method

1. Suppose that there were two isotopes of Sodium.
28% of the naturally occurring sodium atoms had a
mass of 22, and 72% atoms had a mass of 23. What
would the average atomic weight of sodium be?

Answers

Answer: C. The university surveys 600 randomly selected students who attend the university. Correct

Explanation:

22.72 is the average atomic weight of sodium.

What are isotopes?

Isotopes are different versions of a specific element.

1st isotopes of 22u = 28%

2nd isotopes of 23u = 72%

The average atomic weight of sodium be=

22 x 28 + 23 x72

=2272/100

=22.72

Hence, 22.72 is the average atomic weight of sodium.

Learn more about isotopes here:

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1. Se preparan 750 ml de una disolución en agua, que contiene 0,00071 moles de Nitrato de potasio para adobar una carne de res. Calcular la ppm de la disolución. 2. Una muestra de 600 ml de disolución tiene 4 mg de ión fluoruro (F-). Cuántas ppm de F hay en la muestra?. Ayudaaaaaa plis

Answers

Answer:

1. 95.7 ppm

2. 6.67 ppm

Explanation:

Podemos pensar la denominación ppm como partes por millón, es un tipo de unidad que define concentración de solutos en una solución.

ppm = μg/g  o si lo queremos ver en volumen, μg/mL

Quiere decir microgramos de soluto en 1 g de solución o mL de solución.

Ej 1.  En primer lugar convertimos los moles de KNO₃ a gramos

0.00071 mol . 101.1 g/mol = 0.071781 g

Si pasamos los gramos a μg → 0.071781 g . 1000000 μg/ 1g = 71781 μg

Dividimos 71781 μg /750 ml = 95.7 ppm

Ej 2. Convertimos los mg a μg → 4 mg . 1000 μg/ 1 mg = 4000 μg

Ahora dividimos: 4000 μg /600 ml = 6.67 ppm

what types of organisms are most likely to become extinct (characteristics)?

Answers

Many rare and/or endemic species exhibit one or more of the following attributes which make them especially prone to extinction: (1) narrow (and single) geographical range, (2) only one or a few populations, (3) small population size and little genetic variability, (4) over-exploitation by people

I need help with chemistry question?

Answers

Answer:

2Al + 3Na2SO4 -----> Al2(SO4)3 + 6 Na

Explanation:

Product should be Al2(SO4)3

Because Al contains +3 charge

And SO4 contains -2 charge

To balance this postive and negative charge we multiple +3 with 2 and -2 with 3

The Earth's _____ provides protection from meteorite impacts by causing them to _____.

please leave a simple answer

Answers

Answer:

atmosphere, break up

Explanation:

Answer:

Atmosphere, break up

Explanation:

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instant help guys please,I need this in about ten minutes. please help I'll give brainiest to correct answer3*9^1+X=27^-x.find x What is the range of the function f(x) = 1/2^x? The product of a number below - 7/10 is 2/10what is the number?-7/207/20- 5/75/7 Need help ASAP!! Find the unknown side of the triangle below (round to the nearest tenth).A.) 210.5 cmB.) 5.4 cmC.) 16 cmD.) 20.5 cm Sorry this is irrelevant but would you eat this What is one positive thing that can happen after a hurricane? please help 100 points Quamain is selling chocolate bars for a fundraiser. In his box, he had 12 milk chocolate bars, 8 caramel bars, 9 almond chocolate bars, and 6 dark chocolate bars. What is the ratio of milk chocolate to almond chocolate bars in his box?4:3 Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's profits last month, where x is the number of sandwich lunch specials sold and y is the number of wrap lunch specials sold.1. Change the equation to slope-intercept form. Identify the slope and y-intercept of the equation. Be sure to show all your work.2. Describe how you would graph this line using the slope-intercept method. Be sure to write using complete sentences.3. Write the equation in function notation. Explain what the graph of the function represents. Be sure to use complete sentences.4. Graph the function. On the graph, make sure to label the intercepts. You may graph your equation by hand on a piece of paper and scan your work or you may use graphing technology.5. Suppose Sal's total profit on lunch specials for the next month is $1,593. The profit amounts are the same: $2 for each sandwich and $3 for each wrap. In a paragraph of at least three complete sentences, explain how the graphs of the functions for the two months are similar and how they are different.6. Below is a graph that represents the total profits for a third month. Write the equation of the line that represents this graph. Show your work or explain how you determined the equations. Is this answer correct yes or no? What percentage is 388 ?? hi, please help me with this thank you! Interphase is the part of the cell cycle during which these phases occur:A. Growth 1, Synthesis, Growth 2B. Growth 1, Synthesis, Growth 2, MitosisC. Growth 1 and Growth 2D. Mitosis and Cytokinesis Zola, a nursing assistant, read in her patient Henrys chart that he just found out he has cancer. Which aspect of the privileged communication is she reading?health historymedical symptomslaboratory resultsmedical diagnosis 500 mL of He at 98 kPa expands to 750 mL. Martin Luther's 95 Theses started which movement? Solve these equations as a ordered pair Y= 2x-3Y= -x If the circumference of a circle is 36, what is the length of a radius of the circle?A. 6B. 18C. 36D. 72 Newcastle Enterprises had net income for 2024 of . Newcastle had shares of common stock outstanding at the beginning of the year and shares of common stock outstanding at the end of the year. There were shares of preferred stock outstanding all year. During 2024, Newcastle declared and paid preferred dividends of . What is Newcastle's earnings per share? (Round the answer to two decimal places.) What is greater 80 over 100 or 8 over 10?