2019 paper

Question 1

first blank for born haber

Answer 1

cs(s) +1/2I2

x=107

Question 2

Gibs free enrgry

Answer 2

AS = 11.3 joules =0.00113 kj

334 kjmol

Question 3

how to stop percentage uncerainy

Answer 3

use a larger volume of alloy

Question 4

mass of 1 mole

Answer 4

mr x avagrados

Question 5

electrospray ionsation

Answer 5

dissolve in olar volatile soloution
inject through a capilary needle where when its sprayed through turns into a mist
jigh voltage applied to the top of the needle where it
gains a h+

Question 6

whats the word for acid and bases

Answer 6

amphotertic

Question 7

formula of j and colour

Answer 7

fe(h20)6 3+
brown prepitate

co2 +3h20

Question 8

formula of l

Answer 8

(fecl4)-

zinc is sulfric acid

Question 9

why is kp endothemric at higher temps

Answer 9

kp is higher at higher temp
means the equilbeuim shofts tot he right
as its exothermic

Question 10

draw the bonding in methonaol

Answer 10

stuff

Question 11

what is the state of m

Answer 11

its green

Question 12

moles

Answer 12

mass (g) /mr

Question 13

what is the vaule of kp sqaured

Answer 13

3.94x10 4