The pressure of a gas is measured as 49 torr. Represent this pressure in both atmosphere and pascals.

Calculate the silver ion concentration in a saturated solutionof silver (I) sulfate (Ksp = 1.4 x 10-5).

Identify each of the phase changes described below. Liquid gold is poured into molds and cools to become solid bars. The gold is. Liquid nitrogen becomes a gas when it is poured out of its container. The nitrogen is.

A solution having a pH of zero is neutral.

If 5.65 grams of zinc metal react with 21.6 grams of silver nitrate, how many grams of silver metal can be formed and how many grams of the excess reactant will be left over when the reaction is complete? Show all of your work.

If 20.0 grams of Ca combines completely with 16.0 grams of S to form a compound l, what is the percent composition of Ca in the compound?

What is the amount of heat released when 25g of water cools 12.5 degrees C?

What is hotter 17 degrees celcius or 58 degrees Fahrenheit

How do aqueous solutions of ionic and molecular compounds differ

Which reaction represents an unbalanced neutralization reaction? Na + H2O NaOH + H2 HNO3 + NaOH NaNO3 + H2O NaNO3 + H2O HNO3 + NaOH H2O H2 + O2

How does the health of polar bears indicate the health of the environment