Question

Reactions of metals with acid
You may have noticed that when you put magnesium in dilute hydrochloric acid the test tube
got hot. The reaction between hydrochloric acid and magnesium is an exothermic reaction.
magnesium + hydrochloric acid → magnesium chloride + hydrogen
Measuring rise in temperature during a reaction
Noor and Hanif each poured 10cm of hydrochloric acid into
a test tube and measured the temperature. Then they added
identical pieces of magnesium ribbon. When the reaction
stopped they measured the temperature again.
thermometer
dilute
hydrochloric
acid
magnesium
ribbon
Measuring the rise in temperature when
magnesium reacts with hydrochloric acid.
Noor's results
Start temperature / °C End temperature / °C
Hanif's results
Start temperature / °C
18
42
End temperature / °C
21
45
72
5 Energy changes​

Answer 1

Answer:

Photosynthesis -

Photosynthesis is a process in which green plants get prepare their own food in the presence of sunlight, chlorophyll, carbon dioxide (CO2) , water (H2O), glucose and minerals .

Equation -

6CO2 + 6H2O ----→ C6H12O6 + 6O2