A train travels 160 km in 2 h. What is the train’s average speed in km/h?
80 km/h
.80km/h

All of the following are part of the biosphere except

The element that has the greatest electronegativity is

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