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Katena32 [7]
3 years ago
13

The density of gold is 19.3 grams per cubic centimeter. What is the mass of a bar of gold that measures 15.24 cm in length, 10.1

6 cm in width, and 5.08 cm in height?
Chemistry
1 answer:
kumpel [21]3 years ago
4 0

Answer:

40.75

Explanation:

15.24   ×   5.08   ×   10.16 =786.579072

786.579072/19.3=40.75

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Answer:

0.486atm is the pressure of the cylinder

Explanation:

1 mole of Pb(NO₃)₂ descomposes in 4 moles of NO2 and 1 mole of O2. That is 1 mole descomposes in 5 moles of gas.

To find the pressure of the cylinder, we need to find moles of gas produced, and using general gas law we can determine the pressure of the gas:

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Using PV = nRT

P = nRT/V

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And n are moles of gas (0.05 moles)

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