A sample of hydrogen is collected in a flask

over water. The partial pressures are 736 torr for

H, and 22 tort for H2O. What total pressure is

exerted by the mixture of gases?

Potassium fluoride (kf), a salt, has a molecular weight of 58.10 grams. how many grams would be needed to mix 1.0 liter of 0.10 m salt solution? 0.17 g 580 g 17 g 5.8 g

You shake a can of soda and open it, which cause the pressure to decrease. what happens to the volume of the CO2. the soda

A sampling of 30 million particles coming from an exhaust vent contained 60 sulfur dioxide molecules. What is another way of expressing this concentration of sulfur dioxide using this information?

What is the normal pH of most freshwater lakes, streams, and ponds? Question 3 options: A) 1 to 3 B) 4 to 5 C) 6 to 8 D) 9 to 11

The Tris/Borate/EDTA buffer (TBE) is commonly made as a 5x solution. What volumes of 5x TBE and water are required to make 500 mls of a 0.5x solution which is often used in electrophoresis?

3.011 x 10^23 atoms F in grams

What would you use if you needed to determine the density of an object? balance and graduated cylinder balance and scale scale and spectroscope

What are two forms of friction that oppose the motion of a moving car

How are models related to theories and hypotheses

What similarities do nuclear energy and chemical energy share?