A sample of helium has a volume of 3 liters when the pressure is 500 kPa. What volume does the gas occupy at 300 kPa?

It has been experimentally determined that the rate law for thereaction between mercury (II) chloride and sodium oxalate is third order overall and first order with respect to HgCl2. Write the rate law for this reaction.

As a radioactive element emits gamma radiation only, the atomic number of the element increases or decreases

How are a mole and a dozen similar

Why is respiration an exothermic reaction? A large amount of energy is released into the surroundings. The heat content, q, of the reaction is positive. A large amount of energy is required to activate the reaction.

At a certain temperature, the solubility of strontium arsenate, sr3 (aso4) 2, is 0.0590 g/l. what is the ksp of this salt at this temperature?

What is in a banana? give me specifics?!

Addition of an excess of lead (II) nitrate to a 50.0mL solution of magnesium chloride caused a formation of 7.35g of lead (II) chloride precipitate. What was the molar concentration of chloride ions in the solution (in mol/L) ?

2.70 L of a gas has a pressure of 0.63 atm. What is the volume of the gas at 105 kPa?

Which statements describe Rutherford's model of the atom? Select all that apply.

When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. what volume of h2 is produced when 7.20 g of al reacts at stp?