What is the concentration of water?

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Question

(A) The molar mass of water $(H_2O)$ is $18 \ g \ mol^{-1}$.Assuming the density of water is $1 \ g \ mL^{-1}$,then $1 \ L$ of water has a mass of $10

Vedclass · Accepted Answer

$55.55 \ mol \ L^{-1}$

Vedclass · Answer

(A) The molar mass of water $(H_2O)$ is $18 \ g \ mol^{-1}$.Assuming the density of water is $1 \ g \ mL^{-1}$,then $1 \ L$ of water has a mass of $1000 \ g$.The number of moles of $H_2O$ in $1 \ L$ is calculated as:$n = \frac{1000 \ g}{18 \ g \ mol^{-1}} = 55.55 \ mol$.Since molarity $(M)$ is defined as moles per liter of solution:$M = \frac{55.55 \ mol}{1 \ L} = 55.55 \ mol \ L^{-1}$.

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