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scZoUnD [109]
3 years ago
12

Sulfur trioxide can react with atmospheric water vapor to form sulfuric acid that falls as acid rain. Calculate the mass in gram

s of 3.65 × 1020 molecules of SO3.
Chemistry
1 answer:
Natali [406]3 years ago
4 0

<u>Answer:</u> The mass of sulfur trixoide is 0.0485 g

<u>Explanation:</u>

We are given:

Molecules of sulfur trixoide = 3.65\times 10^{20}

According to mole concept:

6.022\times 10^{23} number of molecules are present in 1 mole of a compound

So, 3.65\times 10^{20} number of molecules will be present in = \frac{1}{6.022\times 10^{23}}\times 3.65\times 10^{20}=6.06\times 10^{-4}mol

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of sulfur trixoide = 6.06\times 10^{-4}mol

Molar mass of sulfur trioxide = 80 g/mol

Putting values in above equation, we get:

6.06\times 10^{-4}mol=\frac{\text{Mass of }SO_3}{80g/mol}\\\\\text{Mass of }SO_3=(6.06\times 10^{-4}mol\times 80g/mol)=0.0485g

Hence, the mass of sulfur trixoide is 0.0485 g

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Much of the mass of an atom is concentrated in its nucleus. The nucleus contains , and the outer part of the atom contains ​
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Proton                                 +1                              1

Neutron                                0                             1

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It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.

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Symbol of proton= P⁺  

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Mass of proton=1.672623×10⁻²⁷ Kg

Symbol of neutron= n⁰

Mass of neutron=1.674929×10⁻²⁷ Kg

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