element X and Y combine to form two compound XY and X2Y find the weigh

1.	element X and Y combine to form two compound XY and X2Y find the weight of Xand Y ,IF THE WEIGHT OF .1 MOLE of XY is 10g and .05 mole of X2Y is 9g??
Answer» ANSWER: Answer Let X and y be the ATOMIC weights of X and Y Given 0.1 mole of XY 2 weighs 10g ⇒x+2y= 0.1 10 =100⟶(1) 0.05 mole of X 3 Y 2 weighs 9g ⇒3x+2y= 0.05 9 =180⟶(2) (1)⇒x=100−2y Substituting for x in Equation (2) ⇒3(100−2y)+2y=180 ⇒300−6y+2y=180 ⇒y=30 Hence x=100−2(30)=40

element X and Y combine to form two compound XY and X2Y find the weight of Xand Y ,IF THE WEIGHT OF .1 MOLE of XY is 10g and .05 mole of X2Y is 9g??

Answer»

Answer

Let X and y be the ATOMIC weights of X and Y

Given 0.1 mole of XY

weighs 10g

⇒x+2y=

0.1

=100⟶(1)

0.05 mole of X

weighs 9g

⇒3x+2y=

0.05

=180⟶(2)

(1)⇒x=100−2y

Substituting for x in Equation (2)

⇒3(100−2y)+2y=180

⇒300−6y+2y=180

⇒y=30

Hence x=100−2(30)=40