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3 years ago

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The molar mass of hydrogen (H2) is 2.02 g/mol. A sample contains 4.00 mol of H2. What is the mass, in grams, of this sample

1 answer:

Gelneren [198K]3 years ago

4 0

The mass in grams is 8.08 g of (H2). To figure this out, you would take 2.02 and multiply it by 4.00 to get the answer of 8.08.

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How many mL of a stock solution of 2.00 M KNO3 are needed to prepare 100.0 mL of 0.15M KNO3? with work plz

Tatiana [17]

Using the law of dilution :

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2.00 x Vi = 0.15 x 100.0

2.00 x Vi = 15

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What do radio waves and gamma rays have in common?

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omeli [17]

Answer:

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Explanation:

It is required to find the energy of an electromagnetic wave with a frequency of $8\times 10^{12}\ Hz$ . The energy of a wave in terms of its frequency is given by :

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3 years ago

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Mademuasel [1]

Answer:

$hello \: your \: answer \: is \: here.$

Explanation:

<h2>Condensation is the change of water from its gaseous form (water vapor) into liquid water. Condensation generally occurs in the atmosphere when warm air rises, cools and looses its capacity to hold water vapor. As a result, excess water vapor condenses to form cloud droplets.</h2>

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3 years ago

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il63 [147K]

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3 years ago