Which of the following is the best hypothesis? A. Chemical reactions and physical reactions are interesting to watch B. How does wood change when it burns in a campfire? C. During a chemical reaction, the total mass of material does not change D. Chemical reactions are easier to identify than physical reactions

Can someone me with 1 to 4 plz. fast

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

The density of benzene at 15 °c is 0.8787 g/ml. calculate the mass of 0.1500 l of benzene at this temperature. enter your answer in terms of grams