Mole ConceptHard
Question
From 2 mg calcium, 1.2 × 1019 atoms are removed. The number of g-atoms of calcium left is (Ca = 40)
Options
A.5 × 10–5
B.2 × 10–5
C.3 × 10–5
D.5 × 10–6
More Mole Concept Questions
SO2 gas is slowly passed through an aqueous suspension containing 12 g of CaSO3 till the milkiness just disappears. What...Acrylonitrile C3H3N is the starting material for the production of a kind of synthetic fibre (acrylics). It can be made ...A 2 m long tube closed at one end is lowered vertically into water until the closed end is flushed with the water surfac...14.0 g of calcium metal is allowed to react with excess HCl at 1.0 atm pressure and 273 K .Which of the following statem...At 373 K and 1 atm, if the density of liquid water is 1.0 g/ml and that of water vapour is 0.0006 g/ml, then the volume ...