Complete the statement - One gram of calcium carbonate represents moles of the compound. [Ca=40, O=16, C=12]

If the law of constant compositon is true, what weights of calcium carbon, and oxygen are present in 1.5 g of calcium carbonate, if a sample of calcium carbonate from another source contains the following percentage composition: Ca = 40.0%, C = 12.0% , and O = 48.0% ?

Calcium nitrate decomposes on heating according to the equation : 2Ca(NO_3)_(2)to2CaO+4NO_(2)+O_(2) The relative molecular mass of calcium nitrate is 164. Calculate : the weight of calcium oxide obtained when 16.4 g of calcium nitrate is heated to constant weight. (Ca = 40, O = 16, N = 14)

The weight of a molecule of the compound C_6H_12O_6 is about :

Calculate the percentage of water molecules in hydrated calcium sulphate . [Ca=40 , S=32 , O=16 , H=11]

A sample of calcuium carbonate (CaCO_(3)) has the following percentage composition: Ca=40%, C=12%, O=48% If the law of constant proportions is true. Then the weight of calcium in 4 g of a sample of calcium carbonate obtained from another source will be

A sample of calcuium carbonate (CaCO_(3)) has the following percentage composition: Ca=40%, C=12%, O=48% If the law of constant proportions is true. Then the weight of calcium in 4 g of a sample of calcium carbonate obtained from another source will be

Select the correct word from the list in bracket to complete each statement . The reaction of ________[calcium carbonate /calcium oxide/calcium sulphite]with dilute nitric acid is an example of a neutralization reaction.

'X' an organic compound - containing “carbon, hydrogen & oxygen only contains, 1.92g. of carbon & 0.48g. of hydrogen. If the compound weighs 3.68g, & has a vapour density of 69, find the molecular formula of the compound. [C=12, H=1, O=16]

A sample of calcium carbonate (CaCO_(3)) has the following percentage composition: Ca=40%,C=12%,O=48% If the law of constant proportions is true, then the weight off calcium in 4g of a sample of calcium carbonate from another source will be

A compound contains 50% Ca, 15% C and 35% N atoms by mass. Determine the simplest formula of the compound. (R.A.M.: C = 12, N = 14, Ca = 40.)