What kind of reaction is shown by the temperature rise?
Besides the temperature increase, state two observations that can be seen while the reaction is happening.
Construct an equation for the reaction between magnesium powder and hydrochloric acid.
Plot the data on the grid, draw a straight line through the points, and continue the line until it crosses the y-axis.
Use your graph to find the temperature at $0$ minutes.
The hydrochloric acid started at $20.0^\circ\text{C}$. Use your answer to (c)(i) to calculate the maximum temperature rise.
Calculate the amount of heat energy in joules (J) needed to raise the temperature of $50.0\text{ cm}^3$ of hydrochloric acid by $1^\circ\text{C}$, given that $4.2\text{ J}$ are needed to raise $1.0\text{ cm}^3$ by $1^\circ\text{C}$.
Calculate the amount of heat energy in joules (J) needed to raise the temperature of $50.0\text{ cm}^3$ of hydrochloric acid by the maximum temperature rise calculated in (c)(ii).