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2 years ago

Place the following atmospheric gases in order of abundance, from highest to lowest.

Chemistry

1 answer:

Step2247 [10]2 years ago

8 0

Explanation:

The percentage abundance of the following gases in the atmosphere is given as;

Carbon dioxide = 0.04 percent

Other trace gases = about a tenth of one percent of the atmosphere.

Argon = 0.93 percent

Oxygen = 21 percent

Nitrogen = 78 percent

Te order from highest to lowest is given as;

Nitrogen

Oxygen

Argon

Carbon dioxide

Other trace gases

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A piece of metal with a mass of 142 g is placed in a 50 mL graduated cylinder. The water level rises from 20 mL to 40 mL. What i

zheka24 [161]

Explanation:

The end goal of this question is to find density. Density can be found using the following formula:

D=m/v

D=Density

m=mass

v=volume

Therefore we need mass and volume to find density. Mass is already given in the question as 142g. All we have left is volume. When a solid is placed in water in a graduated cylinder the volume goes up. This means if you subtract the volume after the metal was placed from before it was placed, you can find the volume of the metal. Therefore the volume of the metal is 40mL-20mL=20mL. However typically, volume is found in liters so the volume should be .04L-.02L=0.02L. Now that we have volume and mass we can find density using the formula d=m/v. So 142/.02=7,100 grams per liget or 7.1 kilograms per liter. This answer seems unrealistic so I would double check with your teacher about the question.

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2 years ago

Why does hydrogen fluoride have a high boiling point

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2 years ago

For the reaction depicted in the molecular scenes, X is red and Y is green.(a) Write a balanced equation.

Vadim26 [7]

The balanced equation based on the scenes is given by ,

X2 + 3Y2 → 2XY3

Given ,

For the reaction depicted in the molecular scenes , X is red and Y is green .

Through observing the scenes , the balanced chemical equation of the scenes is given by ,

The scenes indicates 3 moles of molecule X2 reacts with 9 moles of molecule Y2 to form 6 moles of tetra atomic molecules XY3.

Thus the balanced equation is given by ,

3X2 + 9Y2 → 6XY3

Divide each side of the equation by 3 , we get , the balanced equation as,

X2 + 3Y2 → 2XY3

<h3>What is a balance chemical reaction ?</h3>

A balanced chemical reaction is a type of reaction which include the reactants and products in same amount i.e. the no of mole on both side of the reaction is remains same or balanced .

Learn more about chemical reaction here :

brainly.com/question/1893305

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1 year ago

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Leviafan [203]

Answer:

Explanation:

This is because,

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