You visited us 1 times! Enjoying our articles? Unlock Full Access!

Molecules and Atomicity

An element A ...

Question

An element A (atomic weight $= 12$ ) and B (atomic weight $= 35.5$ ) combines to form a compound X. If $4$ mol of B combines with $1$ mol of A to give $1$ mol of X. The weight of $1$ mol of X would be :

47.5 g

No worries! We‘ve got your back. Try BYJU‘S free classes today!

74.0 g

No worries! We‘ve got your back. Try BYJU‘S free classes today!

154.0 g

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

148.8 g

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 154.0 g
Given:
Atomic weight of A= 12 and B= 35.5
A and B combine to form a compound X and the reaction can be given as:
$\begin{matrix} 4 B + A \to X 4 \times 35.5 + 12 \to ? \end{matrix}$
Weight of X = ( $4 \times 35.5$ ) + $12$ = 154 g
So the correct option is C.

Suggest Corrections

Similar questions

Q. Suppose elements

X

and

Y

combine to form two compounds,

X Y_{2}

and

X_{3} Y_{2}

, where

0.1

mol of former weigh

10

g while

0.05

mol of the latter weigh

9

g. What are the atomic weights of

X

and

Y

respectively?

Q. The ratio of weight of oxygen that combines with a fixed weight of an element X to form compounds A and B is 1 : 2. If the valency of element X is 1 in both cases, what could be the formulae of compounds A and B?

Q. Which of the following statements regarding the compound

A_{x} B_{y}

is/are incorrect?

Q. An element

X

(Atomic weight = 80 g/mol) has a

f c c

structure. Calculate the number of unit cells in

8 g

X

K M n O_{4}

oxidises

X^{n + 1}

ion into

{X O}_{3}^{-}

, itself changing to

{M n}^{2 +}

in acid solution.

2.68 \times 10^{- 3}

mol of

X^{n + 1}

requires

1.61 \times 10^{- 3}

mol of

M n O_{4}^{-}

. What is atomic weight of

X

, if the weight of

1

g equivalent of

{X C l}_{n}

56

Join BYJU'S Learning Program

An element A (atomic weight =12) and B (atomic weight =35.5) combines to form a compound X. If 4 mol of B combines with 1 mol of A to give 1 mol of X. The weight of 1 mol of X would be :

The correct option is C 154.0 gGiven: Atomic weight of A= 12 and B= 35.5A and B combine to form a compound X and the reaction can be given as:4B+A→X4×35.5+12→?Weight of X = (4×35.5) + 12 = 154 gSo the correct option is C.

An element A (atomic weight $= 12$ ) and B (atomic weight $= 35.5$ ) combines to form a compound X. If $4$ mol of B combines with $1$ mol of A to give $1$ mol of X. The weight of $1$ mol of X would be :

The correct option is C 154.0 g
Given:
Atomic weight of A= 12 and B= 35.5
A and B combine to form a compound X and the reaction can be given as:
$\begin{matrix} 4 B + A \to X 4 \times 35.5 + 12 \to ? \end{matrix}$
Weight of X = ( $4 \times 35.5$ ) + $12$ = 154 g
So the correct option is C.