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frozen [14]
3 years ago
6

How many grams of chromium metal are plated out when a constant current of 8.00 A is passed through an aqueous solution containi

ng Cr 3+ ions for 40.0 minutes?
Chemistry
1 answer:
Vsevolod [243]3 years ago
6 0

Answer:

fijhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

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
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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

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0.4529 = x

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