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mestny [16]
3 years ago
9

Why is elemental zinc considered a pure substance?

Chemistry
1 answer:
Veseljchak [2.6K]3 years ago
7 0

Answer:  C... Because Zinc is made of only one type of atoms.

Explanation: All elements are made of one type of atom. Pure gold is made out of only gold atoms, silver out of only silver atoms, etc.

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What is the temperature of 4.5 moles of a gas that occupies 50. mL at 1.35 atm?
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Answer:

T = 0.182 Kelvin

Explanation:

As we know that

PV = nRT\\

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R = 0.08206

Substituting the given values in above equation, we get -

1.35 * \frac{50}{1000}= 4.5 * 0.08206* T\\

On rearranging, we get

T = \frac{1.35*50}{1000*0.08206*4.5} \\

T = 0.182 Kelvin

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