the mole and mass Flashcards
1
Q
value of avogadro’s constant
A
6.02 x 10²³
2
Q
what is the avogadro constant also known as?
A
one mole
3
Q
what does one mole of carbon weigh?
A
12g
4
Q
conservation of mass in a chemical reaction
A
no atoms are created nor destroyed
5
Q
why could the mass increase in a chemical reaction?
A
one of the reactants is a gas found in air, so its mass can’t be counted before the reaction, but it forms part of the solid product
6
Q
why could the mass decrease in a chemical reaction?
A
one of the products is a gas, and the reactants were solids or liquids, the gas can escape after the reaction
