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(A) The chemical reaction is given by: $4B + A \rightarrow X$.Since $4 \ mol$ of $B$ and $1 \ mol$ of $A$ form $1 \ mol$ of $X$,the formula of $X$ is

Vedclass · Accepted Answer

$154$

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(A) The chemical reaction is given by: $4B + A ightarrow X$.Since $4 \ mol$ of $B$ and $1 \ mol$ of $A$ form $1 \ mol$ of $X$,the formula of $X$ is $AB_4$.The molar mass of $X$ is the sum of the atomic masses of its constituent atoms:$	ext{Molar mass of } X = 1 	imes (	ext{Atomic mass of } A) + 4 	imes (	ext{Atomic mass of } B)$$= 1 	imes 12.01 + 4 	imes 35.5$$= 12.01 + 142$$= 154.01 \ g/mol$.Rounding to the nearest whole number as per the options,the weight of one mole of $X$ is $154 \ g$.

Consider the following data:

Element Atomic mass

$A$ $12.01$

$B$ $35.5$

$A$ and $B$ combine to form a new substance $X$. If $4 \ mol$ of $B$ combine with $1 \ mol$ of $A$ to give $1 \ mol$ of $X$,then the weight of one mole of $X$ is ........... $g$.

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Consider the following data: Element Atomic mass $A$ $12.01$ $B$ $35.5$ $A$ and $B$ combine to form a new substance $X$. If $4 \ mol$ of $B$ combine with $1 \ mol$ of $A$ to give $1 \ mol$ of $X$,then the weight of one mole of $X$ is ........... $g$.