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frutty [35]
3 years ago
11

'if 100 grams of pure water taken from different sources is decomposed by passing electricity,11grams of hydrogen and 89 grams o

f oxygen are always'. which chemical law is illustrated by this statement?​
Chemistry
1 answer:
Fed [463]3 years ago
4 0

Answer:

Law of constant proportions

Explanation:

'every pure substance always contains the same elements combined in the same proportions by weight'

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Gabriel Fahrenheit invented the thermometer
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Iron and oxygen form rust. How many moles of rust should be produced if 1
kakasveta [241]

Answer:

1.387 moles

Explanation:

Step 1:

The balanced equation for the reaction. This is illustrated below:

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Step 2:

Determination of the number of mole of Fe in 155.321g of Fe. This can be achieved by doing the following:

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Number of mole of Fe =?

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Step 3:

Determination of the number of mole of rust (Fe2O3) produced. This is illustrated below:

From the balanced equation above,

4 moles of Fe produced 2 moles of Fe2O3.

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6 0
3 years ago
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Suppose 200.0 mL of a 2.50 M solution of sodium hydroxide is combined with 400.0 mL of a 1.50 M solution of iron(III) nitrate. W
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Explanation:

The detailed solution is shown in the image attached. First we must work out the balanced reaction equation because accurate solution of the problem must be based on the stoichiometry of the reaction. From the given concentration and volume of reactants, we calculate the amount of substance reacted hence identify the limiting reactant. Lastly we use simple proportion to obtain the theoretical yield of the precipitate. This is now used to calculate the actual yield as shown in the solution attached.

6 0
3 years ago
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