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Lady_Fox [76]
3 years ago
9

Please helpdue tonight​

Chemistry
1 answer:
andre [41]3 years ago
5 0

Answer:

, CaCO3, contains one atom of calcium, one of carbon and three of oxygen. so t<u>here are 5 atoms in CaCO3</u>

Mg(OH)2, There is  one magnesium, two oxygen, and two hydrogen atoms. so <u>there are 5 atoms  Mg(OH)2</u>

a molecule of acetic acid  contains two carbon atoms, four hydrogen atoms, and two oxygen atoms. <u>so there are 8 atoms in acetic acid </u>

There are <u>3 atoms in CaCl2</u>

H2SO4 is a chemical compound made up of two hydrogen atom, one sulfer atom, and four oxygen atoms. <u>So there are 7 atoms in H2SO4</u>

There are <u>8 atoms in sodium phosphate</u>

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Explanation:

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A gas occupies 12.3 liters at a pressure of 40.0 mm Hg. What is the volume when the pressure is increased to 60.0 mm Hg?
statuscvo [17]

Answer:

Final volume = V₂ =  8.2L

Explanation:

Given data:

Initial volume = 12.3 L

Initial pressure = 40.0 mmHg

Final volume = ?

Final pressure = 60.0 mmHg

Solution:

The given problem will be solved through the Boyle's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

40.0 mmHg × 12.3 L = 60.0 mmHg × V₂

V₂ = 40.0 mmHg × 12.3 L / 60.0 mmHg

V₂ =  492 mmHg. L /  60.0 mmHg

V₂ =  8.2L

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3 years ago
Please help me on this question I'm confusied on it
Korolek [52]

Answer:

So you need to look for the average speed of each car, which would allow you to then enter the numbers.

Explanation:

Hope this helps! Have a great say! :)

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A sample of ideal gas at room temperature occupies a volume of 27.0 L at a pressure of 852 torr . If the pressure changes to 426
Lubov Fominskaja [6]

The new volume V₂ is 5.4L

The new volume is calculated using Boyle's law formula

That  is  P₁V₁=P₂V₂

where,

p₁ =  852 torr

V₁ = 27.0

P₂ = 4260 torr

V₂=?

Make  V₂ the subject of the formula by diving into both sides of the equation by P₂

V₂ = P₁V₁/P₂

⇒ 852 *

V₂  is, therefore, = 5.4 L

Learn more about Boyle's law here: brainly.com/question/1696010

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Which of the following statements correctly describes the relationship
Leokris [45]

A higher frequency results in a higher pitch

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