Question

J 0.2355/gocx100.99= 25.99gj°C IUI. L a mag 4. Why is it important to always use the same thermometer throughout this experiment? let is important to use the same thernometer to have Continuity and eliminate any chances a Vanatims in temperature 5. In each of the following systems, is the sign of a positive or negative? a. + Water is boiled. (Water is the system) b. Perspiration evaporates from an athlete's skin. The skin is the system c. + Water freezes. (Water is the system) An acid reacts with a base. (The chemicals are the system) Is a bomb calorimeter a constant volume calorimeter or a constant pressure calorimeter?Coastant volleme Calou meter

are the answers to 5 correct?

Answer 1

5 (a) When water is boiled heat is absorbed. So, q is positive.

(b) During evaporation heat is released from the skin. So, q is negative.

(c) Water freezes on cooling. This means heat is released from the water. So, q is negative.

(d) Generally, in a neutralization reaction between an acid and base heat is produced from the chemicals. So, q is negative.

A bomb calorimeter is a constant volume calorimeter.