Advertisements
Advertisements
प्रश्न
Calculate the percentage of water of crystallization in CuSO4.5H2O
(H = 1, O = 16, S = 32, Cu = 64)
Advertisements
उत्तर
Given :
Atomic mass of H 1
Atomic mass of O 16
Atomic mass of S 32
Atomic mass of Cu 64
Molar mass of CuSO4.5H2O (64) + (32) + (9 x 16) + (10 x 1)
= 250
Molar mass of five water molecules (10 x 1) + (5 x 16)
= 90
Percentage of water of crystallization = `(90 xx 100)/250` = 36% water of crystallization.
APPEARS IN
संबंधित प्रश्न
Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?
Convert into mole.
12 g of oxygen gas
What name is given to the amount of substance containing this number of atoms ?
How many moles of calcium carbonate (CaCO3) are present in 10 g of the substance ? (Ca = 40 u ; C = 12 u ; O = 16 u)
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Sodium chloride
Correct the statement, if required.
The relative atomic mass of an element is the number of times one molecule of an element is heavier than `1/12` the mass of an atom of C12.
Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of (NH4)2Cr2O7.
How many grams are there in the following?
3 moles of chlorine molecule, Cl2.
Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol–1.
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
magnesium oxide
