3 years ago

What structures are contained in the nucleus?

Chemistry

1 answer:

zzz [600]3 years ago

4 0

Answer:

nuclear envelope, nuclear la Nina, nucleolus, chromosomes, and nucleoplasm. Hope this helped?

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2 years ago

Calculate the moles of O atoms in 0.658 g of Mg(NO3)2.

lara31 [8.8K]

Answer:

There are 0.0267 moles of oxygen in 0.658 grams of magnesium nitrate.

Explanation:

Mass of magnesium nitrate = m = 0.658 g

Molar mass of magnesium nitrate = M = 148 g/mol

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$n=\frac{m}{M}=\frac{0.658 g}{148 g/mol}=0.004446 mol$

1 mole of magnesium nitrate has 6 moles of oxygen atoms. Then 0.004446 moles magnesium nitrate will have :

$6\times 0.004446 mol=0.026676 mol\approx 0.0267$

There are 0.0267 moles of oxygen in 0.658 grams of magnesium nitrate.

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