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maxonik [38]
3 years ago
12

What is the chemical formula for the compound formed from potassium and sulfur

Chemistry
1 answer:
irakobra [83]3 years ago
4 0
Equation: 2K + S --> K2S Chemical formula: K2S
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How many mL of a 0.375 M solution can be made from 35 g of calcium phosphate?
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Answer:

300 mL

Explanation:

the unit formula of calcium phosphate is Ca3(PO4)2

molar mass of Ca3(PO4)2 = (3×40 + 2×31 + 8×16) g/mol = 310 g/mol

n = m/M = 35 g/(310 g/mol)

c = n/V

V = n/c = [35 g/(310 g/mol)]/0.375 mol/L

V = 0.30 L = 300 mL

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