Chemistry
03.07.2021 22:58
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A molecular compound has the following empirical formula: CH2O. The molar mass of

A molecular compound has the following empirical formula: CH2O. The molar mass of the empirical formula is g. Write your answer using 3 significant figures. If the molar mass of the molecular compound is 180.0 g/mol, write the molecular formula of the compound.
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alexiahall2616
alexiahall2616
4,4(64 marks)

Empirical formula has a molar mass of 30.01g/mol and molecular formula is C₆H₁₂O₆

Explanation:

Molar mass of a molecule is the sum of the molar mass of each atom. In CH2O we have:

1C = 1*12.01g/mol = 12.01g/mol

2H = 2*1g/mol = 2g/mol

1O = 1*16g/mol = 16g/mol

Empirical formula of CH2O is:

12.01g/mol + 2g/mol + 16g/mol = 30.01g/mol

As the molecular compound has a molar mass of 180.0g/mol the molecular formula is:

180.0g/mol / 30.01g/mol = 6 times the empirical formula. That is:

C₆H₁₂O₆
jayv1999
jayv1999
4,4(35 marks)

This can happen when a river or stream erodes a portion of the rock layers. This can also happen when faulting occurs. Faulting causes displacement in rock units. The figure here shows the offset between the layers signified by the black line cutting across the rocks.

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