Q. 384.3( 3 Votes )
If 32g of sulphur has x atoms, then the number of atoms in 32g of oxygen will be:
Atomic weight of sulphur = 32g
One atom of sulphur weighs 32g
Atomic weight of oxygen is 16g
Hence, 2 atoms of oxygen weighs 32g
Rate this question :
Calculate the mass in grams of 0.17 mole of hydrogen sulphide, H2S.
(Atomic masses: H = 1 u, S = 32 u)Lakhmir Singh & Manjit Kaur - Chemistry
What weight of each element is present in 1.5 moles of sodium sulphite, Na2SO3?
(Atomic masses: Na = 23 u; S = 32 u; O = 16 u)Lakhmir Singh & Manjit Kaur - Chemistry
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.Lakhmir Singh & Manjit Kaur - Chemistry
Calculate the formula masses of the following compounds:
(i) Calcium chloride
(ii) Sodium carbonate
(Given: Atomic masses: Ca = 40 u; Cl = 35. 5 u; Na = 23 u; C = 12 u; O = 16 u)Lakhmir Singh & Manjit Kaur - Chemistry
Define gram atomic mass of a substance. How much is the gram atomic mass of oxygen?Lakhmir Singh & Manjit Kaur - Chemistry
How many moles of oxygen atoms are present in one mole of the following compounds?
(i) Al2O3 (ii) CO2 (iii) Cl2O7
(iv) H2SO4 (v) Al2(SO4)3Lakhmir Singh & Manjit Kaur - Chemistry
Show by means of calculations that 5 moles of CO2 and 5 moles of H2O do not have the same mass. How much is the difference in their masses?Lakhmir Singh & Manjit Kaur - Chemistry
Calculate the number of moles present in a drop of chloroform (CHCl3) weighing 0.0239 g. (Atomic masses: C = 12 u; H = 1 u; Cl = 35.5 u)Lakhmir Singh & Manjit Kaur - Chemistry
Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and (ii) magnesium chloride?Lakhmir Singh & Manjit Kaur - Chemistry
Which has more atoms, 50 g of aluminium or 50 g of iron? Illustrate your answer with the help of calculations.
(Atomic masses: Al = 27 u; Fe = 56 u)Lakhmir Singh & Manjit Kaur - Chemistry