Atomic and Molecular Masses

How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of  $\text{PbO}$ and 3.2 g of  $\mathrm{HCl}$? Molar mass of $\mathrm{PbO}$ is equal to 223 g/mol.

Specific volume of a cylindrical virus particle whose radius and length are $7 \mathrm{\AA }$ and $10 \mathrm{\AA }$ respectively, is  $6.02\times {10}^{-2}\mathrm{cc}/\mathrm{g}$. If  ${\mathrm{N}}_{\mathrm{A}}=6.02\times {10}^{23}$, find the molecular weight of the virus:

Two moles of chlorine atoms are present in how many grams of chlorine gas?

One mole of ${\mathrm{CH}}_4$ contains?

Give the value for the following:

Gram atom of potassium $=$ _____  $\mathrm{g}$ of potassium.

Give the value for the following:

Gram atom of chlorine $=$ _____  $\mathrm{g}$ of chlorine.

Give the value for the following:

Gram molecule of helium $=$ _____  $\mathrm{g}$ of helium.

Two flasks A and B of equal volumes are kept under similar conditions of temperature and pressure. If flask A holds $16.2 \mathrm{g}$ of gas X while flask B holds $1.35 \mathrm{g}$ of hydrogen, calculate the relative molecular mass of gas X.

 The relation between gram molecular mass and gram molecular volume is established by Avogadro's law. Explain. 

Calculate the molecular weight of Cryolite $\left[{\mathrm{Na}}_3{\mathrm{AIF}}_6\right]$

Calculate the molecular weight of ammonium sulphate$\left[\right({\mathrm{NH}}_4{)}_2{\mathrm{SO}}_4]$.

Vapour density of ${\mathrm{SO}}_3$ is _____.

The formula of calcium dihydrogen phosphate is 

Conider the following reaction
${\mathrm{FeS}}_2\to {\mathrm{Fe}}_2{\mathrm{O}}_3+{\mathrm{SO}}_3$
If mol.wt of ${\mathrm{FeS}}_2$ is $\mathrm{M}$. Then its equivalent weight is given as $\frac{\mathrm{M}}{{\mathrm{n}}_{\mathrm{f}}}$. Find the value of ${\mathrm{n}}_{\mathrm{f}}$.

Which of the following has least mass?

Total number of atoms in $18 \mathrm{amu}$ of ${\mathrm{H}}_2\mathrm{O}$ is

Calculate total number of $\mathrm{O}$ atoms in $48 \mathrm{amu}$ of ozone.

How many moles of proton will weigh $200$ grams?

What is the molar mass of glucose?

Calculate the molar mass of glucose