Advertisements
Advertisements
Question
Calculate the number of hydrogen atoms in 0.1 mole of H2SO4.
Advertisements
Solution
1 mole of H2SO4 contains = 2 x 6.02 x 1023
So, 0.1 mole of H2SO4 contains = 2 x 6.02 x 1023 x 0.1
= 1.2 x 1023 atoms of hydrogen
RELATED QUESTIONS
Aluminium carbide reacts with water according to the following equation :
`Al_4C_3 + 12H_2O-> 4Al(OH)_3 + 3CH_4`
1)What mass of aluminium hydroxide is formed from 12g of aluminium carbide?
2) What volume of methane at s.t.p. is obtained from 12g of aluminium carbide?
[Relatively molecular weight of `Al_4Cl_3 = 144; Al(OH)_3 = 78]`
Fill in the blank.
Molecular weight of a gas is twice its __________.
If a crop of wheat removes 20 Kg of nitrogen per hectare of soil, what mass of the fertilizer calcium nitrate,Ca(NO3)2 would be required to replace nitrogen in 10 hectare field? (N = 14, O = 16, Ca = 40)
Samples of the gases O2, N2, CO2 and CO under the same conditions of temperature and pressure contain the same number of molecules represented by X. The molecules of Oxygen, occupy V litres and have a mass of 8 g. Under the same conditions of temperature and pressure :
What is the mass of CO2 in g?
Calculate the percentage of sodium in sodium aluminium fluoride (Na3AIF6).
[F = 19, Na = 23, Al = 27]
A compound 'X' consists of 4.8% of C and 95.2% of Br by mass.
If the vapour density of the compound is 252, what is the molecular formula of the compound?
A compound 'X' consists of 4.8% of C and 95.2% of Br by mass.
Name the type of chemical reaction by which X can be prepared from ethane.
Give one word or phrase for the following:
Formation of ions from molecules.
Calculate the relative molecular mass of:
Potassium chlorate
Calculate the relative molecular mass of:
CuSO4. 5H2O
