Question

output by measuring how to
ich of the following
Ali wants to find out whether biscuit or bread has a higher energy output by measurin
each takes to raise the temperature of some water by 5 °C when burnt. Which of the fol
variables should he keep constant to conduct a fair test?
(1) The initial temperature of the water
(I) The final temperature of the water
(ID) The volume of water
(IV) The mass of the food samples
A
1. II and III only
II. III and IV only
1. III and IV only
All of the above​

Answer 1

Answer:

All of the above

Explanation:

heat energy output depends on the amt of matter, initial and final temperatures.