Select all the correct answers.

Which three sources are examples of secondary sources?

You chill your reaction in an ice bath when adding nitric acid to the sulfuric acid. why?

How many moles are in 0.54 g of Al2O3

If the volume of a gas is cut in half without changing the temperature what happens to the pressure? a) pressure decreases by half b) pressure increases four fold c) pressure remains the same d) pressure is squared e) pressure doubles

The heat of combustion of ethane c2h6 is 1560 kj mol. what is the heat of combustion of ethane, in kj per gram

In a cooking context, which of the following materials is the best heat conductor? A. Any dense liquid B. Iron C. Gas D. Glass

How many molecules are in 1.2 moles of H20?

Which of the following is diamagnetic? A) Sn B) Pb 2+ C) I D) N E) All are paramagnetic

Based on your observations in the lab, what do you think happens to the majority of water (not, ice) at the poles? at the equator?

How do organisms interact with each other and how can one organism be dependent upon other species

Check Sodium inside a star is most likely formed by which process? fission fusion <<--? alpha emission Beta emission