Name the one at the bottom please

Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.