Find the number of water molecules in $1 \ mL$ of water vapours at $STP$?
- A$1.69 \times 10^{19}$
- B$2.00 \times 10^{21}$
- C$1.05 \times 10^{21}$
- D$2.69 \times 10^{19}$
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Similar Questions
The mass of $2 \times 10^{22}$ nitrogen atoms is ..... grams.
Easy
View SolutionAssertion : Equal moles of different substances contain same number of constituent particles.
Reason : Equal weights of different substances contain the same number of constituent particles.
Reason : Equal weights of different substances contain the same number of constituent particles.
DifficultAIIMS 2017
View SolutionMatch the items in Column-$A$ with the items in Column-$B$ and select the correct option.
Column-$A$ Column-$B$ $1$. $55.55 \text{ mol}$ $(P)$ $6.022 \times 10^{23}$ molecules of sucrose $2$. $2 \text{ mol}$ $(Q)$ $1.8 \text{ g}$ of $H_2O$ $3$. $0.1 \text{ mol}$ $(R)$ $126 \text{ g}$ of $HNO_3$ $4$. $0.01 \text{ mol}$ $(S)$ $1 \text{ L}$ of pure water
| Column-$A$ | Column-$B$ |
| $1$. $55.55 \text{ mol}$ | $(P)$ $6.022 \times 10^{23}$ molecules of sucrose |
| $2$. $2 \text{ mol}$ | $(Q)$ $1.8 \text{ g}$ of $H_2O$ |
| $3$. $0.1 \text{ mol}$ | $(R)$ $126 \text{ g}$ of $HNO_3$ |
| $4$. $0.01 \text{ mol}$ | $(S)$ $1 \text{ L}$ of pure water |
Medium
View SolutionThe number of water molecules in $1 \, L$ of water is = ............
Medium
View SolutionHow many moles are present in $0.224 \ L$ of an ideal $H_2$ gas at $STP$ (in $mol$)? (Assume molar volume $= 22.4 \ L \ mol^{-1}$)
Easy
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