Energy Levels of an atom. Explain.

The speed limit is posted as 35 km/hr. your speedometer reads that you are going 40 miles/hr. are you speeding?

Why does a ballon fly around when you let the air out of it

Explain why water can separate and disperse ionic solids such as NaCl but most other solvents are unable to do so

Identify the first step of the Calvin cycle and describe what happens. for 27 pts.

What's the mr of 2MgSO4?

Restate Newtons first law in terms of acceleration

Why is burning is not a recommended method of disposing plastics

Why do cells have a plasma membrane? A. to separate protein from the nucleus B. to distinguish plants from animals C. to define the size of the cell D. to separate the inside of the cell from its enviroment

Base on its molecular mass, what is the molar mass of iron

For the following reaction in aqueous solution, identify all those species that will be spectator ions. Select all that apply. Na, SO4+Hg (NO3) 2HSO4+2NaNO3 Choose one or more: A. Hg2S04 B. Na2S04 C. Nat D. NO3 E. SO42- F. Hg2 (NO3) 2 G. NaNO3 H.