A person uses 452 kcal of energy to run a race. Convert the energy used for the race to the following energy units: calories
calories
calories
calories

it's c. elements are placed in rows based on how may valencies electrons have.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying