How many nitrate ions, NO3^- are there in 2 mol of aluminium nitrate, Al(NO3)3? [Avogadro's constant: 6.02 x 10^23)

Which of the following substances has the highest number of atoms?

How many oxygen atoms have the equal mass with two magnesium atoms?

[RAM: O=16, Mg=24]

Which of the following substances contains the same number of atoms as in one mol of chlorine gas?

What is the number of carbon atoms in 1 mol of butane gas, C4H10?

Which of the following does not contain 3 x 10^22 atoms?

[RAM: Mg=24, S=32, Ti=48, Cu=64; NA= 6.02 x 10^23]

Which of the following is the similarity between isotopes C-12 and C-13?

The following chemical equation shows the dehydration of propanol to produce propene gas and water.

C3H7OH ---> C3H6 + H2O

If 15.0g of propanol is dehydrated, calculate the volume of propene gas produced at room temperature.

[C=12, O=16, H=1, MV=24dm^3mol-1]

Which of the following statements explains why Group 1 elements have similar chemical properties?

Manganese (IV) oxide is added to the decomposition reaction of hydrogen peroxide as the catalyst. Which of the following is not true about the function of a catalyst?