The pressure of a gas is 750.0 torr when its volume is 400.0 mL. What is the pressure if the gas is allowed to expand to 600.0 mL at constant temperature?

Ksp for calcium carbonate is 3 x 10-9. if you mix together 100 ml of 0.01 m calcium chloride with 100 ml of 10-5 m solution of potassium carbonate, will a precipitate form?

How much heat is released when 105 g of steam at 100.0°C is cooled to ice at - 15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity of liquid water is 75.

The electric field in a parallel plate capacitor has magnitude 1.40 x 104 V/m. What is the surface charge density (LaTeX: / sigma σ, in C/m2) on the positive plate? (LaTeX: / epsilon_0 ϵ 0 = 8.854 x 10-12 F/m)

In the process of oxidizing i - to i2, so42 - is reduced to so2. how many moles of so2 are produced in the formation of one mole of i2? express your answer numerically in moles.

Why are there wires in circuits? what is their job/function?

Evidence that best supports the theory of biological evolution was obtained from the

You may normally expect a slow reaction if a low activation energy is required.

What do 2 different neutral isotopes of the same element have in common?

Why are oceans salty

When the free-energy change (AG) of a reaction is negative, the reaction is said to be: Endergonic Non spontaneous Spontaneous Endothermic