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denpristay [2]
3 years ago
13

Which of the following refers to the horizontal rows of the periodic table?

Chemistry
1 answer:
maks197457 [2]3 years ago
4 0

Answer:

B. Periods

Explanation:

The horizontal rows in the periodic table are periods.

on the picture below, u can see an example

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You have 2 moles of NaOH how many molecules of NaOH?
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Answer:

12.044 X 10^23 molecules of NaOH

Explanation:

because NaOH is an ionic bond, we should be asking how many <em>formula units </em> are in 2 moles of NaOH, there are 0 molecules since NaOH is measured in formula units.

but for the sake of the problem I'll assume NaOH is measured in molecules

for every mol of something there are 6.022 X 10^23 of something of that something.

so there are 6.022 X 10^23 molecules for every mol of NaOH

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