Advertisements
Advertisements
प्रश्न
Calculate the mass of 0.1 mole of the following:
CaCO3
(Ca = 40, Na = 23, Mg = 24, S = 32, C = 12, Cl = 35.5, O = 16, H = 1)
उत्तर
Molar weight = [40 + 12 + (3 x 16)] = 100 g
∴ 0.1 mole of CaCO3 has mass =100 (molar mass) x 0.1
= 10 g
APPEARS IN
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Sulphur molecule, S8
If the aluminium salt of an anion X is Al2X3, what is the valency of X ? What will be the formula of the magnesium salt of X ?
What is the mass of 5 moles of sodium carbonate (Na2CO3) ?
(Atomic masses : Na = 23 u ; C = 12 u ; O = 16 u)
Prove the Following :
One mole of any gas contains th e same number of molecules.
Fill in the blank
One gram atom of an element contains ______ atoms.
Fill in the blank.
One a.m.u. is the mass of ______ atom of C12.
A student puts his signature with graphite pencil. If the mass of carbon in the signature is 10-12 g. Calculate the number of carbon atoms in the signature.
A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
What mass of ammonium nitrate should be heated to produce 8.96L of steam?
Define or explain the term:
Gram atom
Compute the difference in masses of 103 moles each of magnesium atoms and magnesium ions.
(Mass of an electron = 9.1×10–31 kg)
