Question Text
Question 8 :
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 10 :
The number of particles in 0.1 mole of carbon atoms are-
Question 12 :
Law of _________________ states that In a chemical substance the elements are always present in definite proportions by mass.
Question 14 :
Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?
Question 21 :
If one mole of carbon atoms weighs 12 grams, what is the mass of 1 atom of carbon?
Question 24 :
What is the number of aluminium ions present in 0.051 g of aluminium oxide?
Question 27 :
The number of moles in $12.044\times10^{23}$ number of He atoms are-
Question 32 :
A __________ is a group of two or more atoms that are chemically bonded together, that is, tightly held together by attractive forces.
Question 36 :
What is the number of molecules of sulphur $(S_{8})$ present in 16 g of solid sulphur?