Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 42

EASY

NDA & NA EE

IMPORTANT

Earn 100

Consider the following reaction:

${xAs}_{2} S_{3} + {yO}_{2} ⟶ {zAs}_{2} O_{3} + {wSO}_{2}$

What is $y$ (the coefficient for $O_{2}$ ), when this equation is balanced using whole number coefficients?

50% studentsanswered this correctly

Important Questions on Concept of Atomic, Molecular and Equivalent Masses

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 43

A compound

X_{2} O_{3}

contains

31.58 %

oxygen by weight. The atomic mass of

X

is ______.

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 44

What is the number of mole(s) of

H_{2 (g)}

required to saturate one mole of benzene?

MEDIUM

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 4 - Concept of Atomic, Molecular and Equivalent Masses>Practice Exercise>Q 45

Which one of the following has the different number of molecules? (All are kept at normal temperature and pressure)