Suppose the elements X and Y combine to form two compounds XY 2 and X 3 Y 2 . When 0.1 mole of XY 2 weighs 10 gm and 0.05 mole of X 3 Y 2 weighs 9 gm , the atomic weights of X and Y are re

Question

Suppose the elements X and Y combine to form two compounds $XY_{2}$ and $X_{3} Y_{2}$ . When 0.1 mole of $XY_{2}$ weighs 10 gm and 0.05 mole of $X_{3} Y_{2}$ weighs 9 gm , the atomic weights of X and Y are respectively :

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Answer:

C

Solution:

On solving

$\frac{10}{0.1} \frac{9}{0.05} = 100 = X + 2 Y = 180 = 3 X + 2 Y$

$X = 40, Y = 30$

TestHub · Accepted Answer

On solving 0.1 10 ​ 0.05 9 ​ ​ = 100 = X + 2 Y = 180 = 3 X + 2 Y ​ X = 40 , Y = 30

Chemistry - Mole Concept Question with Solution | TestHub

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