Acompound with a formula mass of 42.08 u is found to be 85.64% carbon and 14.36% hydrogen by mass. find its molecular formula.

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 number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Why does his teacher ask him to balance the equation by including the correct coefficient