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Ber [7]
4 years ago
8

Which of the following for an object should be known to calculate its density

Chemistry
1 answer:
k0ka [10]4 years ago
4 0

Density = mass / volume

therefore, both mass and volume are needed

the first one represents volume

The Space it occupies is the answer

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2H2 +O2 = 2H2O balance equation with 5 oxygen
Ivenika [448]

10H₂    +   5O₂ →    10H₂O

Explanation:

This problem deals with balancing of chemical equations. In balancing chemical equations, the law of conservation of mass must be followed. This states that:

   "In a chemical reaction, matter is neither created nor destroyed but transformed from one form to another".

This meaning of this is that; the number of atoms on each side of the expression must be the same.

                    2H₂    +   O₂ →    2H₂O

let us check is the equation above is balanced;

   

                                      2H₂    +   O₂ →    2H₂O

Elements             reactant                product

H                                  4                           4

O                                   2                           2

We can see vividly that the equation is balanced;

Now; if we have 5 oxygen gas, we multiply the equation through by 5:

 

                                 5 x          (  2H₂    +   O₂ →    2H₂O   )

     ⇒        10H₂    +   5O₂ →    10H₂O

Elements             reactant                product

H                                  20                       20

O                                  10                        10

learn more:

Balanced equation brainly.com/question/11102790

#learnwithBrainly

5 0
4 years ago
Select the correct answer.
vitfil [10]

Answer:

The answer is B

Explanation:

6 0
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Almost all of the oxygen on the planet Earth is found in the atmosphere. Is this true or false?
solong [7]
<span>False. Almost all of the oxygen on Earth is found in the oceans.</span>
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4 years ago
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Please help! Please try and give me a long answer. Thanks!
Morgarella [4.7K]
I found this for your question

5 0
3 years ago
The result of one experiment carried out by a research team would be considered valid if
Kaylis [27]
Where is the rest of the question.
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