9th Class Chemistry MCQs
9th Class Chemistry MCQs with answers for grade 9 chemistry subject paper preparation online. 9th Class Chemistry MCQs How many numbers of moles are equivalent to 8 grams of CO2? (A) 0.15(B) 0.18(C) 0.21(D) 0.24 Formula: No. of moles = Given mass/Molar mass The number of particles in one mole of a substance is called: … Read more