chap 3 HW 2

Question 1

what were you meant to catch out in these questions

Answer 1

1) appropriate s.f therefore prob 3
2) .says temperature decreases so (original temperature(specified higher up 300 K) - 5)
.asks for answer in cm^3, working’s give m^3 (m=100 cm, m^2= 10000 cm^2, m^3= 1000000 cm^3) so i would do “(ANS of working)*10^6”

Question 2

if empirical formula with mass AlCl3 = 133 Mr and same compound with Mr 267 what is it’s molecular formula

Answer 2

267/133 = 2
2(AlCl3) = Al2Cl6

Question 3

what should you do if Q says “Explain how this increases/decreased would affect this”

Answer 3

use the corresponding formulas to work it out (and the units in those formulas that might be affected- edited)

Question 4

convert 1 dm^3 into { liter (L), cm^3 (cubic centimeters), mL (milliliters) }

Answer 4

1 liter (L), 1000 cm^3 (cubic centimeters), 1000 mL (milliliters)

Question 5

Answer 5

Question 6

Answer 6

Question 7

Answer 7

Question 8

Answer 8