C4 Flashcards
1
Q
Find the relative formular mass of MgCl2
A
95
2
Q
Find the parcentage mass of sodium in sodium carbonate Na2C03
A
3
Q
What does 1 mole of a substance represent?
A
Amount of that substance wich contains Avogadro’s number of particles (6.02x10^23) including atoms,ions or electrons
4
Q
_ ___ of atoms or molecules of a substance will have a ____ in grams ____ to the __
A
One mole of atoms or molecules of a substance will have a mss in grams equal to the Mr
Carmbon=Mr12=> 1 mole of carbon is 12g
5
Q
How many moles are there in 66g of carbon?
A
