[AJN]

A bomb calorimetry measurement with 1000 grams of water produces an increase in temperature of 25°C. If C_H2O is 4 J/g°C, what is DeltaH_rxn?

A. 100,000 kJ
B. 1,000 kJ
C. 100 kJ
B. 10 kJ

(Underscore means everything after it is a subscript)

I would appreciate an explanation and not just an answer if possible. I'm a high schooler in college chem, and I've been struggling with a few topics, calorimetry included.

Thanks for the help.

[Borek]

What do you know about calorimetry? Any equations in your textbook?

[Orcio_87]

@AJN

Emitted heat can be calculated if change of temperature is measured + heat capacity and mass of given substance is known.

Here you have change of temperature (increase of 25 C), mass of water (1000 g) and it's heat capacity (4 J / (g x C)).

Rest is only simply calculation.