Question Text
Question 10 :
The number of particles in 0.1 mole of carbon atoms are-
Question 12 :
If one mole of carbon atoms weighs 12 grams, what is the mass of 1 atom of carbon?
Question 14 :
A __________ is a group of two or more atoms that are chemically bonded together, that is, tightly held together by attractive forces.
Question 17 :
What is the number of molecules of sulphur $(S_{8})$ present in 16 g of solid sulphur?
Question 19 :
The number of particles in 46 g of Na atoms are-
Question 20 :
The number of moles in $12.044\times10^{23}$ number of He atoms are-
Question 23 :
When 3.0 g of carbon is burnt in 8.00 g 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 50.00 g of oxygen?
Question 27 :
What is the number of aluminium ions present in 0.051 g of aluminium oxide?
Question 30 :
Law of _________________ states that mass can neither be created nor destroyed in a chemical reaction.
Question 31 :
Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?
Question 38 :
Law of _________________ states that In a chemical substance the elements are always present in definite proportions by mass.
Question 50 :
The smallest particles beyond which further division will not be possible are called-