Moles

Question 1

Define Mole

Answer 1

amount of substance that contains as many particles as there are atoms in 12g of carbon 12

Question 2

Whats the equation of the mole?

Answer 2

Mass/MR

Question 3

Whats equation for molecules?

Answer 3

Moles xAC

Question 4

Define empirical formula

Answer 4

Simplest whole number ratio of atoms of each elements in a compound

Question 5

Define molecular formula?

Answer 5

Actual number pf atoms of each element

Question 6

How do you work out empirical formula?

Answer 6

Moles

Biggest divided by smallest

Question 7

How do you work out molecular formula?

Answer 7

Mr given/ empirical formula mass x empirical formula

Question 8

Define water of crystallisatoin

Answer 8

water contained in substances

Question 9

Define anhydrous

Answer 9

No water molecules

Question 10

Define hydrated

Answer 10

Water molecules

Question 11

How do you work out water of crystallisation?

Answer 11

Same as empirical formula

Question 12

Define Avogadros law?

Answer 12

= volumes of gases at same pressure and temp will have the same number of particles

Question 13

Whats the molar gas volume equation?

Answer 13

V(dm3)/24 or V(cm3)/24000

Question 14

Whats the ideal gas equation?

Answer 14

PV=nRT

Question 15

How can an ideal gas be described?

Answer 15

Molecules in continuous motion, no forces, collisions are elastic, no size

Question 16

Whats the equation for moles in solution

Answer 16

n=cxv

Question 17

Whats the equation for conc (gdm3)

Answer 17

Mass/volume