Practical / February

Question 1

What are the 4 steps to calculate the mass of salt produced?

Answer 1

1. write a balanced symbol equation
2. calculate the number of moles of the chemical given
3. use the co-efficient from the equation to determine the number of moles of the second chemical
4. convert the number of moles into mass / volume / concentration

Question 2

What is the stp?

Answer 2

0 ºC, 101, 000 Pa / 1 Atm

Question 3

What is the rtp?

Answer 3

20 ºC, 101, 000 Pa

Question 4

What does the volume of gas depend on?

Answer 4

1. number of moles
2. temperature (directly proportional)
3. the pressure (inversely proportional)

Question 5

At stp, what does 1 mole of gas equal?

Answer 5

22400 cm3

Question 6

At rtp, what does 1 mole of gas equal?

Answer 6

24000 cm3