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boyakko [2]
3 years ago
6

How many molecules of 3Cu20 are present?

Chemistry
1 answer:
7nadin3 [17]3 years ago
6 0

Answer: 5

Explanation:

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What reaction involves one element replacing an element in a compound that is from the same activity series?
Marina86 [1]

Answer: Displacement reaction

Explanation: Displacement reaction is a reaction in which elements higher in the activity series displaces those lower in the activity series in a compound. For example, the reaction between zinc and hydrochloric acid.

Zn + 2HCl —> ZnCl2 + H2

Zn displaces H2 from acid because Zn is higher than hydrogen in the activity series.

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4 years ago
One evening, Alex notes the Moon set in the west at around 8 PM. What would have been the approximate time of moonrise that day?
ra1l [238]

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C

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Early evening about 5 p. m.

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How many molecules of N2O gas are in 250 L at STP?
Fittoniya [83]

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I have no idea all I know is poop.

Explanation:

Because I said so

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What do you think happens to the cells when they do not get the oxygen they need? Why?
ivanzaharov [21]

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the cells start to deteriorate

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the lack of oxygen to your body and cells will cause them to break down.

4 0
3 years ago
Solve the following calculation and round to the correct number of significant figures:
denis23 [38]
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161.964

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