Which of the following is a vapor? steamhidrógen oxygen helium

Chemistry

1 answer:

Scrat [10]2 years ago

7 0

Helium bc when u vape it goes into it lungs but also bringing helium at the same time.

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Which is a fossil fuel? O A. Coal O B. Biomass O C. Geothermal O D. Nuclear

creativ13 [48]

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Explanation:

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Given the atomic mass of select elements, calculate the molar mass of each salt.

arlik [135]

Answer:

See explanation

Explanation:

Molar mass is obtained as the sum of relative atomic masses as follow;

For CaBr = 40.08 + 79.90 = 119.98 g/mol

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___________ a mixture of iron filings and sulfur will make the iron and sulfur atoms combine chemically

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5 0

2 years ago

Read 2 more answers

When NH3(g) reacts with N2O(g) to form N2(g) and H2O(g), 105 kcal of energy are evolved for each mole of NH3(g) that reacts. Wri

Ganezh [65]

Answer : The balanced chemical equation is,

$2NH_3(g)+3N_2O(g)\rightarrow 4N_2(g)+3H_2O(g)+210kcal$

Explanation :

Balanced chemical equation : It is defined as the number of atoms of individual elements present on the reactant side must be equal to the number of atoms of individual elements present on product side.

The given unbalanced chemical reaction is,

$NH_3(g)+N_2O(g)\rightarrow N_2(g)+H_2O(g)+105kcal$

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of individual elements are not balanced.

In order to balanced the chemical reaction, the coefficient 2 is put before the $NH_3$ , the coefficient 3 is put before the $N_2O\text{ and }H_2O$ and the coefficient 4 is put before the $N_2$ .