What to do when tired and can not sleep?

How many moles are in 88.1 of magnesium

1. After clamping a buret to a ring stand, you notice that the set-up is tippy and unstable. What should you do to stabilize the set-up? A. Move the buret clamp to a ring stand with a larger base. B.

Solid arsenic reacts with oxygen gas to synthesize solid arsenic trioxide. How many moles of arsenic trioxide will be produced from 3.4 moles of oxygen gas?

What is time actually

An administrator in a very large company wants to estimate the mean level of nitrogen oxides (NOX) emitted in the exhaust of a particular car model in their very large fleet of cars.

2. How is the frequency of a wave determined?

Ammonium acetate chemical formula

Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to 1/4.00 of the original amount. How long ago was this plant alive?

Balance this equation---> Fe (s) + O2 (g) - - - >FeO (s) (s) = solid (g) = gas

During an endothermic phase change, what happens to the potential energy and the kinetic energy?