Questions in chemical-aritmatic

Select	Question
	19.7 kg of gold was recovered from a smuggler. How many atoms of gold were recovered (Au =197)
	The total number of protons in 10 g of calcium carbonate is (${N_0} = 6.023 \times {10^{23}}$)
	The number of molecules in 16 g of methane is
	Number of molecules in 100 ml of each of ${O_2},\,N{H_3}{\rm{ and}}\,C{O_2}$at STP are
	The molecular weight of hydrogen peroxide is 34. What is the unit of molecular weight
	The number of water molecules in 1 litre of water is
	The number of electrons in a mole of hydrogen molecule is
	The numbers of moles of $BaC{O_3}$which contain 1.5 moles of oxygen atoms is
	Which of the following is Loschmidt number
	How many molecules are present in one gram of hydrogen