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tia_tia [17]
3 years ago
5

=

Chemistry
2 answers:
harkovskaia [24]3 years ago
5 0
The answer is C.) Grinding Chalk into a fine powder because as you can see from the others, the words REACTING, MIXING, and anything dealing with rust, is a result of a chemical change happening. Grinding chalk is not changing the fact that it is chalk, all it is doing is changing its physical shape. I hope you found this helpful have a good night!
Alex787 [66]3 years ago
4 0

Answer:

Grinidng chalk into a fine powder

Explanation:

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1. What pressure would be exerted by 46.0grams of hydrogen gas placed into a 3.00 L container at
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187.34 atm

Explanation:

From the question,

PV = nRT.................. Equation 1

Where P = Pressure, V = Volume, n = number of mole, R = molar gas constant, T = Temperature.

make P the subject of the equation

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Substitute equation 3 into equation 2

P = (m/m')RT/V............ Equation 4

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Constant: m' = 2 g/mol, R = 0.082 atmL/K.mol

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