Which two factors will improve the efficiency of an inclined plane?

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

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?

Why is it that 85.48 rounded to two significant figures is 85 and not 86?