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lions [1.4K]
3 years ago
11

Which of the following is a trend in the periodic table from top to bottom?

Chemistry
2 answers:
Feliz [49]3 years ago
4 0

Answer:

Number of neutrons -

because the proton number increases as you go down the group so the number of neutrons does do.

You can have 87 protons and just 8 neutrons

Explanation:

Shtirlitz [24]3 years ago
3 0
Number of neotrons because it is
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3 years ago
How many g of MgCO3(s) are needed to make 1.2 L of 1.5 M MgCl2(aq) solution?
maw [93]
Molar mass of MgCO3 is 84.313 g/mol
You can calculate this from data on the periodic table:
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molar mass C = 12.011g/mol
molar mass O = 15.999g/mol mass 3 mol = 47.997g
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I have not taken significant figures into account
The balanced equation you provide is not necessary in this calculation
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