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docker41 [41]
2 years ago
7

A mixture of uneven distribution and easy separation is called_____. homogeneous heterogeneous a solution a pure substance

Chemistry
2 answers:
dem82 [27]2 years ago
6 0
The correct answer is heterogeneous.
kramer2 years ago
5 0

Answer:

heterogeneous

Explanation:

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Ammonia chemically reacts with oxygen gas to produce nitric oxide and water . What mass of water is produced by the reaction of
Kay [80]

Full Question:

Ammonia chemically reacts with oxygen gas to produce nitric oxide and water. What mass of water is produced by the reaction of 7.7g of ammonia?

Be sure your answer has the correct number of significant digits.

Answer:

12.23g ≈ 12g (2 s.f)

Explanation:

Ammonia chemically reacts with oxygen gas to produce nitric oxide and water. The balanced chemical reaction is given as:

4 NH3 + 5 O2 ------->  4 NO + 6 H2O

From the reaction;

4 mole of ammonia reacts to produce 6 moles of water

From the question;

Moles = mass / molar mass

From the question;

moles of ammonia = mass / molar mass = 7.7 / 17 = 0.4529moles

Number of moles of water produced;

4 = 6

0.4529 = x

x = (0.4529 * 6 )  / 4

x = 0.67935moles

Mass of water =  moles * molar mass = 0.67935 * 18 = 12.23g ≈ 12g (2 s.f)

4 0
2 years ago
2.0 mol of gas occupy 44.8 l at a temperature of 0°c. what is the pressure of the gas
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The pressure of the gas is 1.0 bar.

<em>pV</em> = <em>nRT</em>

<em>T</em> = (0 + 273.15) K = 273.15 K

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3 years ago
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