Question

contain about 11%(by mass) of hydrogen​

Answer 1

Answer:

1 mole of C

2

H

2

O

4

⟶2 moles of hydrogen=2 g of hydrogen

Thus 0.5 mole of C

2

H

2

O

4

=1 g of hydrogen

1 mole of C

3

H

8

O

3

⟶8 moles of hydrogen=8 g of hydrogen

Thus 1.1 moles of C

3

H

8

O

3

=8.8 g of hydrogen

1 mole of C

6

H

8

O

6

⟶8 moles of hydrogen=8 g of hydrogen

Thus 1.5 moles of C

6

H

8

O

6

=12 g of hydrogen

1 mole of C

2

H

4

O

2

⟶4 moles of hydrogen=4 g of hydrogen

Thus 4 moles of C

3

H

8

O

3

=16 g of hydrogen

Thus 4 moles of C

3

H

8

O

3

contains the largest mass of hydrogen.

Answer 2

Answer:

water contains about 11% of hydrogen

Explanation:

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