What is the oxidation number of O in PO4^3-?

A. 0

B. - 1

C. - 2

D. - 3

E. None Of The Above

If enought heat was removed from water. What will it change into and why

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.

Differentiated tissues take more time to develop than do undifferentiated tissues. Bacteria, for example, reproduce a new generation every 20 minutes, but humans take about 20 years.

The potential energy of a 25 kg bicycle resting at the top of a 3 m high hill is what?

Which phrase describes a solution? A. a homogeneous mixture B. a graduated substance C. a heterogeneous mixture D. a primary mixture of elements

Stereoisomers are: Molecules that are coiled into compact and spherical shapes Molecules that release heat and have negative enthalpy changes Molecules with the same molecular formula but differ in the way their atoms are connected.

Is the mass of an atomic nucleus greater or less than the sum of the masses of the nucleons composing it? Why don't the nucleon masses add up to the total nuclear mass?

When you perform this reaction, what substances could remain at the end of the reaction?

How many moles of CuSO4 are used to make 250 ml of a 0.50 M CuSO4 solution?

The amount of kinetic energy and object has depends on it