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elena55 [62]
3 years ago
8

The mass of a substance is independent of the amount of the substance, while density depends on the amount of the substance. the

density of a substance is the volume of the substance per mass unit and has units such as l/kg, where volume has the units l and mass has units of kg. the density of a substance is independent of the amount of the substance, while mass depends on the amount of the substance. the density of a substance is the mass of the substance per volume unit and has units such as kg/l, where mass has units of kg and volume has the units l.
Chemistry
1 answer:
mart [117]3 years ago
6 0
Density is independent of amount while mass is dependent
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What is the mass of water necessary to generate 11.2 L of hydrogen gas if calcium metal reacts with water at standard temperatur
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Answer:

The mass of water is 18 g

Explanation:

The reaction of calcium with water can be represented in the equation below:

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From the displacement reaction above, calculate the mass of water that will produce 22.4L of hydrogen gas at STP.

Mass of 2H₂O = 2(2x1 + 16) = 2X18 = 36 g/mol

Using proportional analysis;

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Mathematically,

22.4 L ----------------------------------> 36g

11.2 L -----------------------------------> ?

Cross and multiply, to obtain the expression below

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= 18 g

Therefore, the mass of water is 18 g

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