Calculate mean rates of reaction from data

Question 1

Magnesium reacted with acid and 40 cm³ of hydrogen was collected in 10 s. What was the mean rate of reaction, in cm³/s?

Answer cm³/s

Question 2

Marble chips and acid were placed on a balance. The mass fell from 162.4 g to 160 g in 200 s as carbon dioxide escaped. What was the mean rate of reaction, in g/s? Give 3 decimal places.

Answer g/s

Question 3

Volume of gas collected: 0 s: 0 cm³; 20 s: 27 cm³; 40 s: 42 cm³; 60 s: 50 cm³; 80 s: 55 cm³; 100 s: 57 cm³. What was the mean rate between 40 s and 80 s, in cm³/s? Give 2 decimal places.

Answer cm³/s

Question 4

Magnesium reacted with acid and 16 cm³ of hydrogen was collected in 20 s. What was the mean rate of reaction, in cm³/s?

Answer cm³/s

Question 5

Marble chips and acid were placed on a balance. The mass fell from 120 g to 119.1 g in 300 s as carbon dioxide escaped. What was the mean rate of reaction, in g/s? Give 3 decimal places.

Answer g/s

Question 6

Volume of gas collected: 0 s: 0 cm³; 20 s: 51 cm³; 40 s: 69 cm³; 60 s: 76 cm³; 80 s: 79 cm³; 100 s: 79 cm³. What was the mean rate between 0 s and 40 s, in cm³/s? Give 2 decimal places.

Answer cm³/s

Question 7

Magnesium reacted with acid and 60 cm³ of hydrogen was collected in 50 s. What was the mean rate of reaction, in cm³/s?

Answer cm³/s

Question 8

Marble chips and acid were placed on a balance. The mass fell from 135.5 g to 134.3 g in 120 s as carbon dioxide escaped. What was the mean rate of reaction, in g/s? Give 3 decimal places.

Answer g/s

Question 9

Volume of gas collected: 0 s: 0 cm³; 20 s: 36 cm³; 40 s: 56 cm³; 60 s: 67 cm³; 80 s: 73 cm³; 100 s: 76 cm³. What was the mean rate between 40 s and 60 s, in cm³/s? Give 2 decimal places.

Answer cm³/s

Question 10

Magnesium reacted with acid and 10 cm³ of hydrogen was collected in 20 s. What was the mean rate of reaction, in cm³/s?

Answer cm³/s

Question 11

Marble chips and acid were placed on a balance. The mass fell from 180 g to 179.1 g in 150 s as carbon dioxide escaped. What was the mean rate of reaction, in g/s? Give 3 decimal places.

Answer g/s

Question 12

Volume of gas collected: 0 s: 0 cm³; 20 s: 23 cm³; 40 s: 35 cm³; 60 s: 42 cm³; 80 s: 45 cm³; 100 s: 48 cm³. What was the mean rate between 0 s and 20 s, in cm³/s? Give 2 decimal places.

Answer cm³/s

Question 13

Magnesium reacted with acid and 40 cm³ of hydrogen was collected in 20 s. What was the mean rate of reaction, in cm³/s?

Answer cm³/s

Question 14

Marble chips and acid were placed on a balance. The mass fell from 162.4 g to 160.9 g in 300 s as carbon dioxide escaped. What was the mean rate of reaction, in g/s? Give 3 decimal places.

Answer g/s

Question 15

Volume of gas collected: 0 s: 0 cm³; 20 s: 32 cm³; 40 s: 43 cm³; 60 s: 48 cm³; 80 s: 49 cm³; 100 s: 50 cm³. What was the mean rate between 60 s and 100 s, in cm³/s? Give 2 decimal places.

Answer cm³/s

Question 16

Magnesium reacted with acid and 48 cm³ of hydrogen was collected in 60 s. What was the mean rate of reaction, in cm³/s?

Answer cm³/s