Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations

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Question 10
Easy

A student investigated the reaction between calcium carbonate and hydrochloric acid. They collected the carbon dioxide gas produced and plotted their results on a graph.

The graph below shows the student's results:

A line graph plotting the Volume of gas in \text{cm}^3 on the y-axis against the Mass of calcium carbonate in \text{g} on the x-axis. The y-axis ranges from 0 to 120 with grid lines every 2 units, major labels every 20 units (0, 20, 40, 60, 80, 100, 120). The x-axis ranges from 0 to 0.6 with grid lines every 0.01 units, major labels every 0.1 units (0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6). A straight line of best fit is drawn, starting at point (0.10, 16) marked with a cross, and ending at point (0.50, 96) marked with a cross. Universal arrows indicate 'Change in y' vertically from y = 16 to y = 96, and 'Change in x' horizontally from x = 0.10 to x = 0.50.

Determine the gradient of the line of best fit.

You should:

  • State the value of the change in yyy
  • State the value of the change in xxx
  • Calculate the gradient of the line of best fit, including its units.
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Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations Questions

  1. GCSE
  2. /Chemistry
  3. /Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations