Question

Pls help 1 mole of Mg C2 H3O2 and answer last three

Answer 1

1 mole MgC2H3O2

Step 1

Information needed: The mass of each element per mol (the periodic table is recommended to use)

Mg) 24.305

C) 12.011

H) 1.007

O) 15.999

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Step 2

Procedure:

1 mole MgC2H3O2 = 24.305 (Mg) + 2 x 12.011 (C) + 3 x 1.007 (H) + 2 x 15.999 (O) = 83.346 g

Therefore, the molar mass of MgC2H3O2 = 83.346 g/mol

Answer: 1 mole MgC2H3O2 = 83.346 g

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CaCO3:

The masses per mole:

Ca) 40.078

C) 12.011

O) 15.999

1 mole CaCO3 = 40.078 + 12.011 + 3 x 15.999 = 100.08 g

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Cu(CN)2:

The masses per mole:

Cu) 63.546

C) 12.011

N) 14.006

1 mole Cu(CN)2 = 63.546 + 2 x 12.011 + 2 x 14.006 = 115.58 g

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Na2CO3:

Na) 22.989

C) 12.011

O) 15.999

1 mole Na2CO3 = 2 x 22.989 + 12.011 + 3 x 15.999 = 105.98 g