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Aliun [14]
2 years ago
7

Calculate the mass percentage of potassium in K3PO4

Chemistry
1 answer:
Greeley [361]2 years ago
4 0

1) determine molar mass of K₃PO₄

=3(39.10)+30.97+4(16)\\=212.27\ g/mol

2) determine total mass of potassium atoms in K₃PO₄

=3(39.10)\\=117.3\ g

4) divide by molar mass and multiply by 100

=\frac{117.30}{212.27} × 100

= 55.25981062% (round as you wish)

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when two amino acid monomers are positioned so that the carboxyl group of one is adjacent to the amino group of the other, they
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6 0
1 year ago
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1.645 moles of excess reactant that is of magnesium metal are left over.

Explanation:

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According to recation, 2 moles of HCl reacts with 1 mol of magnesium metal, then 3.29 moles of HCl will react with :

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1.645 moles of excess reactant that is of magnesium metal are left over.

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