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FrozenT [24]
3 years ago
9

Copper oxide is a: (Multiple Choice)

Chemistry
2 answers:
Triss [41]3 years ago
7 0

Answer:

The answer is 5. Compound

crimeas [40]3 years ago
7 0

Copper oxide is a compound, so the answer is

5. Compound

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Mixing solutions of iron(III) nitrate and sodium hydroxide precipitates the pigment iron(III) hydroxide. What mass of iron(III)
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Answer:21.5

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Fe(NO3)3 + 3NaOH → Fe(OH)3 + 3NaNO3.

The equation shows that for every three moles of NaOH, one mole of Fe(OH)3 is produced. So, there are three times as many moles of NaOH used up as there are moles of Fe(OH)3 produced.

Find the number of moles of NaCl and divide by 3 to get the moles of Fe(OH)3 produced:

24.1 g NaOH ×  = 0.603 mol NaOH

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The answer is rounded to three significant figures.

7 0
3 years ago
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