A rock accelerated 4.8 m/s² as it was kicked with a force of 1.79 Newtons. What was the mass of the rock? 2.68 kg
0.37 kg
6.59 kg
3.01 kg

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above