How many grams are in 2.3X10^-4 moles of calcium phosphate

Which of these tools is most useful for observing the behavior of ants

A closed flask contains water at 70 deg C. The total pressure of the air-and-water-vapor mixture is 500.0 torr. What is the partial pressure (in torr) of the air in this flask? Use your book for the vapor pressure of water at this temperature.

Pb (CH3COO) 2 + H2S - -> PbS + CH3COOH 1. How many moles are produced of PbS when 5.00 grams of Pb (CH3COO) 2 is reacted with H2S? Make sure to show your work to get full credit. 2. What type of reaction is shown in the reaction above?

What is 1044.987 rounded to three significant figures

The amount of kinetic energy an object has depends on its. motion position gravity height

Why is flammability is a chemical property and not a physical property.

Select the appropriate coefficient for O2 when the equation? O2 (g) + ? C5H12 (g) →? CO2 (g) + ? H2O (g) is balanced using the smallest possible integers.

If the number of neutrons in an atom is changed, does the atom become a new element? Why or why not? a. Yes. The number of neutrons determines the identity of an atom b. Yes.

What must be true for diffusion of a solute to occur across a partition that separates two compartments?

Salt dissolving in water is what type of property?