How much energy is needed to raise the temp. of 24.5g Al from 50 to 71 Celsius?

Which one of the following gases is not an important component of soil?

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

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