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amm1812
4 years ago
8

What are compounds?

Chemistry
1 answer:
hodyreva [135]4 years ago
8 0
I think the correct answer is option A. Pure substances can be considered as compounds. Compounds are molecules made of atoms from different elements held together by chemical bonds. Pure substances are these compounds that exist alone no other substance.
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A sample 0. 100 moles of a gas is collected at at stp. What is the volume of the gas in liters?
andrew11 [14]

A sample 0. 100 moles of a gas is collected at at STP . 2.24 is the volume of the gas in liters.

The STP means standard temperature and pressure.

At STP,

Temperature = 0 °C =273 K

Pressure = 1 atm

We get value of volume by using ideal gas equation,

PV = nRT

  • P is the pressure of the gas = 1 atm
  • V is the volume occupied by the gas = ?
  • n is the number of the moles = 1 mole
  • T is the temperature of the gas = 273 K or  0 °C
  • R universal gas constant = 8.31 J/ mole × K

Calculation,

Since, one mole of a gas occupy 22.4 L volume at STP

So, for 0.1 mole volume occupy = 22.4L × 0.1 mole/1 mole =  2.24L

To learn more about volume at STP,

brainly.com/question/1542685

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1 year ago
PLEASE HELP!!!!!!!! WILL GIVE BRAINLY!!!!!!!!
joja [24]

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3 years ago
Andrea and the other members of the tennis team are practicing hitting tennis balls. If two people hit identical balls at the sa
almond37 [142]

Answer:

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Answer: A. It reflects sunlight

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4 years ago
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