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densk [106]
3 years ago
7

What is the molecular formula of chalk ?

Chemistry
2 answers:
guapka [62]3 years ago
7 0

Answer:

CaCO3

Explanation:

Hope this helps!

NemiM [27]3 years ago
4 0

Explanation:

Calcium carbonate (Chalk) is a chemical compound, with the chemical formula CaCO3. Calcium carbonate (Chalk) is a chemical compound, with the chemical formula CaCO3.

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A sample of a gas has a volume of 852 mL at 298 K. If the gas is cooled to 200K, what would the new volume be?
Colt1911 [192]

Answer:

571.81 mL

Explanation:

Assuming constant pressure, we can solve this problem by using <em>Charles' law</em>, which states that at constant pressure:

  • V₁T₂=V₂T₁

Where in this case:

  • V₁ = 852 mL
  • T₂ = 200 K
  • V₂ = ?
  • T₁ = 298 K

We <u>input the data</u>:

  • 852 mL * 200 K = V₂ * 298 K

And <u>solve for V₂</u>:

  • V₂ = 571.81 mL

The new volume would be 571.81 mL.

4 0
3 years ago
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And the answer is C.
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3 years ago
During which moon phase do spring tides occur?
mihalych1998 [28]

Answer:

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Explanation:

Spring tides occur during new moons when the Sun and the moon are aligned, Pulling together creating big tides.

3 0
3 years ago
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1. A neutral atom has a mass number of 108 and an atomic number of 47.
erastova [34]
A. Silver

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8 0
4 years ago
Lighting a match is an example of what kind of energy conversion?
Alika [10]

Answer:

Mechanical Energy to Thermal Energy

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Explanation:

4 0
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