Question

Two oxides of a metal contain 50% and 40% metal (M) respectively. If the formula of first oxide is  the formula of second oxide will be

Solution

Correct option is

MO3

  Oxide I                   Oxide II

Metal, M     50%                      40%

Oxygen, O  50%                      60%

As first oxide is 

Let atomic mass of M = x

or              0.5 x + 16 = 32

                        0.5 x = 16

                             x = 32

 At. mass of metal M = 32

Let formula of second oxide is 

          

                            

                            2.5 = 1 + 0.25 n

                             

Therefore, formula of second oxide 

SIMILAR QUESTIONS

Q1

The reaction of calcium with water is represented by the equation,

              

What volume of  at STP would be liberated when 8 g of calcium completely reacts with water?

Q2

No reacts with  to form  When 10 g of  is formed during the reaction, the mass of  consumed is

Q3

100 tons of  containing 20% impurities will give iron by reduction with  equal to

Q4

Hydrocarbon X contains 3 g carbon per gram of hydrogen. Simplest formula of the hydrocarbon X is:

Q5

Equal weights of Zn metal and iodine are mixed together and  is completely converted to  What fraction by weight of original Zn remains unreacted? (Zn = 65, I = 127)

Q6

 changes to  on reaction with . There is:

Q7

Which of the following has maximum mass?

Q8

The mass of one atom of hydrogen is approximately

Q9

5.6 L of a gas at NTP are found to have a mass of 11 g. The molecular mass of the gas is