Particles are arranged in a crystal structure in a sample of

(1) H2 (g) (3) Ar (g)

(2) Br2 (l) (4) Ag (s)

the partial pressure of oxygen in a sample of air is 452 mm Mercury and the total pressure is 780 mm Mercury what is the mole fraction of oxygen?

Pressure cookers allow food to cook faster because the higher pressure inside the pressure cooker increases the boiling temperature of water. A particular pressure cooker has a safety valve that is set to vent steam if the pressure exceeds 3.4 atm.

Which has a charge of + 1? proton atom electron neutron

Why was J. J. Thomson wrong?

If the energy in one donut was used to heat 33.5 kg of water, calculate the increase in temperature of the water (in C)

You see rainforests a is far as the eye can see It rains every day and the humidity is fiercel Where might you be? Polar climate Tropical climate Subtropical climate Temperate climate

2. A balloon is dunked into a tank of cold water. How will this affect the size of the balloon?

Which of the following correctly describes a compound?

If the [H+] of a solution is 1.0 x 10 to the power of - 2 mol/L the pH is: (pH = - log (H+] 1 12 -2 2 chemistry

Change 5.20 moles of c3h6o2to grams