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melomori [17]
4 years ago
6

What are the physical properties of pyrite

Chemistry
1 answer:
kakasveta [241]4 years ago
8 0
<span>Hand-specimens of pyrite are usually easy to identify. The mineral always has a brass-yellow color, a metallic lusterand a high specific gravity. It is harder than other yellow metallic minerals, and its streak is black, usually with a tinge of green.</span>
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Calculate the grams of ethane present in a sample containing 0.4271 moles if the molar mass of ethane is 30.067 g/mol.
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The grams of ethane present in a sample containing 0.4271 mole is 12.84 g

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation

Mole = mass / molar mass

With the above formula, we can obtain the mass of ethane. Details below

<h3>How to determine the mass of ethane</h3>

The following data were obtained from the question:

  • Mole of ethane = 0.4271 mole
  • Molar mass of ethane = 30.067 g/mol
  • Mass of ethane =?

The mass of ethane present in the sample can be obtained as follow:

Mole = mass / molar mass

Cross multiply

Mass = mole × molar mass

Mass of ethane = 0.4271 × 30.067

Mass of ethane = 12.84 g

Learn more about mole:

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