Which compound has the longest carbon-carbon bond length? hcch ch3ch3 ch2ch2?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space