Question Text
Question 8 :
What is the SI prefix for $10^{-12}$ multiples and submultiples of a unit?
Question 13 :
When 3.0 g of carbon is burnt in 8.0 g of oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.0 g of oxygen?
Question 23 :
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Question 25 :
Give the formulae of the compounds formed from calcium and fluorine.
Question 27 :
Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is $24g mol^{-1}$.
Question 29 :
What is the metal which exists in the liquid state at room temperature?
Question 32 :
Compute the ratio by mass of the combining elements for Hydrogen chloride.
