Aspirin has the fromula `C_9 H_8 O_4`. How many atoms of oxygen are there in a tablet weighing `360 mg` ?

How many isomers of C_7H_8 O exists that has phenyl ring ?

How many atoms are present in (i) H_2S molecule and (ii) PO_4^3- ion.

How many bridging oxygen atoms are present in P_(4)O_(10) ?

Liquid benzene burns in oxygen according to 2C_(6)H_(6)(1)+150_(2)(8) to12CO_(2),(g)+6H_(2)O(g) . How many litres of oxygen are required for complete combustion of 39g of liquid C_(6)H_(6) (atomic wt.of C=12, 016)?

Observe the following balance chemical equations and answer the given question: C_3H_(8(8))+5O_(2(g))rarr3CO_(2(g))+4H_2O_((g)) How many molecules of oxygen are involved in this chemical reaction?

Benzene burns in oxygen according to the equation 2C_(6)H_(6(l))+15O_(2(g))rarr12CO_(2(g))+6H_(2)O_((l)) . How many litres of oxygen are required at STP for the complete combustion of 39g of liquid benzene?

4.4 gms of a hydrocarbon on complete combustion produced 13.2 gms of CO_(2) and 7.2 gms of H_(2)O . How many moles of oxygen is consumed per mole of hydrocarbon in the combustion?

How many structural isomers are possible with C_7H_8O ?

A compound "X" has molecular formula C_5H_(9) Cl . It does not react with bromine in C Cl_4 . On treatment with strong base it produces single compound "Y" (C_5H_8) and reacts with Br_(2)(aq) . Ozonolysis of "Y" produces a compound C_5H_(8)O_2 . The structure of X is

A metal oxide has the fomula M_2O_3 . It can be reduced by hydrogen to give free metal and water. 0.16g of the metal requires 6mg of H_2 for complete reduction. The atomic mass of the metal is .n? times the atomic number of calcium. The value of .n. is