Question Text
Question 2 :
How many atoms do make a piece of aluminium foil which has mass of 27 grams?
Question 5 :
The atomicity of a species is $x$ and its atomic weight is $y$. The molecular weight of the species is:<br/>
Question 6 :
The number of grams of anhydrous $Na_2CO_3$ present in 250 mL of 0.25 M solution is:
Question 7 :
What volume of 0.232 N solution contains 3.17 milliequivalent of solute?
Question 12 :
The chemical formula of the compound containing carbon and oxygen is :
Question 13 :
What is the mass in grams of 3 moles of $N_2$?
Question 14 :
What is the molecular weight of$\displaystyle HCl{ O }_{ 4 }$?
Question 17 :
If u are given Avogadro number (N) of atoms of a gas X if half of atoms are converted into X(g) + by energy $\Delta$H. the IE of X is?