Im very confused on a question asking about to convert kilocalories to joules. here is the question:
A certain food has 2.343 x 10^-2. how many joules of energy would the food have

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.

What is the subscript for oxygen in its molecular formula

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2