How do you determine the mass of a water sample that is heated from an initial temperature of 25 deg C to a final temperature of 100 deg C following the addition of 1200 J of heat energy?
Here's how I would do it.
The formula for the amount of heat absorbed by a substance is
#color(blue)(bar(ul(|color(white)(a/a)q = mcΔTcolor(white)(a/a)|)))" "#
You can rearrange the formula to calculate the mass:
In your problem,