Question

What the gardener did to disguise the fact that he was making up the prices of the various items as he went along

Answer 1

Answer:

Molar mass of ethene C

2

H

4

=2(12)+4(1)=28 g/mol

7.0 g ethene corresponds to

28g/mol

7.0g

=0.25 moles

1 mole of ethene gives 2 moles of CO

2

.

0.25 moles of ethene will give 0.50 moles of CO

2

.

Molar mass of CO

2

is 44 g/mol.

Mass of CO

2

will be 44 g/mol × 0.50 mol= 22 g

Hence, option B is correct.

Answer 2

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