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kati45 [8]
3 years ago
9

A candle is 10 cm high and 2 cm in diameter physical or chemical property​

Chemistry
1 answer:
rewona [7]3 years ago
3 0

Answer: Physical property

Explanation: length and dimensions are under physical properties of matter.

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An unknown noble gas has a density of 5.84 g dm-3 at STP. Calculate its molar mass, and so identify the gas.
bagirrra123 [75]

The noble gas is Xenon and its molar mass is 131 g/mol.

<h3>What is the molar mass of the noble gas?</h3>

The molar mass of the noble gas is determined as follows;

Let molar mass of unknown gas be M, and mass of gas be m

Density of the noble gas, ρ = 5.8 g/dm³

density = m/V

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From ideal gas equation:

PV = nRT

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PV = mRT/M

M = mRT/PV

M =  0.0821 * 273.15 * 5.84/1

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The noble gas is Xenon which has molar mass approximately equal to 131 g/mol.

Learn more about molar mass at: brainly.com/question/837939

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