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2 years ago

7

Which statement is true of the following reaction? H2 + O2 -> 2H+ O2-

1 answer:

Ede4ka [16]2 years ago

6 0

B.it is not balanced for charge or for number of atoms.

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A 5.5 gg sample of a substance contains only carbon and oxygen. Carbon makes up 35%% of the mass of the substance. The rest is m

Elan Coil [88]

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a. ((100 - 35)/100) times 5.5 grams = 3.575 g

Explanation:

Given that:

The sample of carbon and oxygen = 5.5g

where carbon makes 35% of the mass of the substances.

It implies that oxygen will make: (100 - 35)% = 65%

Suppose y be the mass of the oxygen;

Then:

$y = \dfrac{(100-35)}{100} \times 5.5 \ g$

$y = \dfrac{(65)} {100} \times 5.5 \ g$

$y = 3.575 \ g$

The mass of carbon $= \dfrac{35}{100} \times 5.5 \ g$

= 1.925 g

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2 years ago