Question
How many electrons are present in 16 g of $\mathrm{CH}_4$ ?
✓
Answer
1 molecule of $\mathrm{CH}_4=6+4=10$ electrons
$\Rightarrow 16 \mathrm{~g}$ of $\mathrm{CH}_4$ contains $10 \times 6.022 \times 10^{23}$ electrons
$\Rightarrow 6.022 \times 10^{24}$ electrons.
$\Rightarrow 16 \mathrm{~g}$ of $\mathrm{CH}_4$ contains $10 \times 6.022 \times 10^{23}$ electrons
$\Rightarrow 6.022 \times 10^{24}$ electrons.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In a reaction
$\mathrm{A}+\mathrm{B}_2 \rightarrow \mathrm{AB}_2$
Identify the limiting reagent, if any, in the following reaction mixtures.
100 atoms of A + 100 molecules of B.
→$\mathrm{A}+\mathrm{B}_2 \rightarrow \mathrm{AB}_2$
Identify the limiting reagent, if any, in the following reaction mixtures.
100 atoms of A + 100 molecules of B.
Bromine has two isotopes ${ }^{79} Br$ and ${ }^{81} Br$ whose percentage amounts are 49.7 and 50.3 respectively. Then find average atomic mass of Bromine.
→Every year some people die by being in room containing a faulty heater that uses coal, or oil? How might the death occur?
Derive the relationship between isothermal and free expansion of an ideal gas.
Explain about solubility of ionic compounds.
Write the structures of products (A and B) of the following reactions:
→- $\text{HC}\equiv\text{CH}\xrightarrow{\text{Na}}\text{A}\xrightarrow{\text{CH}_3\text{Br}}\text{B}$
- $\text{BrH}_2\text{C}-\text{CH}_2\text{Br}\xrightarrow[\text{KOH}]{\text{Alcoholic}}\text{A}\xrightarrow{\text{NaNH}_2}\text{B}$
What is the relationship between direction of current and flow of electrons by convention?
What mass of hydrogen peroxide will be present in 2 litres of a 5 molar solution? Calculate the mass of oxygen which will be liberated by the decomposition of 200mL of this solution.
Give IUPAC names of the following structures.
Which alkali metal ion forms largest hydrated ion in aqueous solution and why?