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jekas [21]
3 years ago
6

Which of the following is a chemical change

Chemistry
1 answer:
Oliga [24]3 years ago
3 0

C. a burning candle

all the other choices are physical changes

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What is the mass, in grams, of 0.125 L of CO2 at STP? Question 4 options: 2.80 g 181 g 0.246 g 4.11 g
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1) Use the fact that 1 mol of gas at STP occupies 22.4 liter

=> 1 mol / 22.4 l = x / 0.125 l => x = 0.125 l * 1 mol / 22.4 l = 0.00558 mol

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