MCQ
A solution is prepared by adding $2g$ of a substance $A$ to $18g$ of water. Calculate the mass percent of the solute.
- A$8\%$
- B$9\%$
- ✓$10\%$
- D$11\%$
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$(a)$ $Be _{2} C$
$(b)$ $CaC _{2}$
$(c)$ $Mg _{2} C _{3}$
$(d)$ $Al _{4} C _{3}$
$A(g) + B(g) \to C(g)$ $\Delta U=\,-\,3\,Kcal$
$\Delta S=\,-\,10\,cal/K$
value of $\Delta G$ will be ......$cal$
