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GenaCL600 [577]
3 years ago
10

30 g of hydrogen reacts with 120 g of oxygen to form water.How much water is produced?

Chemistry
1 answer:
Rus_ich [418]3 years ago
6 0

According to law of conservation of mass.

In a chemical reaction Mass is neither created nor destroyed.

  • Mass of product =Mass of reactant

#1

Mass of water

\\ \sf\longmapsto 30+120=150g

#2

Mass of sulphur:-

\\ \sf\longmapsto 136.9-111.6=25.3g

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7 0
3 years ago
What is meant by valency of an element ? give an example ​
lara31 [8.8K]

Answer:

valency of an element is a combining power of an element.

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5 0
2 years ago
Consider the exothermic reaction
alisha [4.7K]

Answer:

The answer to your question is -2855 J

Explanation:

Reaction

                     2C₂H₆  +  7O₂   ⇒   4CO₂  +  6H₂O

Formula

Heat of reaction = ΔHrxn = ΣΔHrxn products - ΣΔHrxn reactants

Substitution

ΔHrxn = { 4(-393.5) + 6(-241.8)} - {2(-84.7) + 7(0)}

ΔHrxn = {-1574 -1450.8} - {-169.4}

ΔHrxn = -3024.8 + 169.4

ΔHrxn = -2855.4 J

4 0
3 years ago
A tank measures 18.89in * 8.39in* 6.70in, how many liters of dichloromethane could it hold?
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