An ion of iron has an 26 protons, 30 neutrons, and 23 electrons. what are its atomic number, atomic mass, and net charge?

A typical barometric pressure in redding, california, is about 750 mm hg. calculate this pressure in atm and kpa.

A fuel scientist burnt a piece of coal and a piece of wood to compare the amount of heat given off by each.

What changes in every chemical reaction besides forming and breaking of chemical bonds?

Explain how two organisms can have the same phenotype bet different genotypes

Are polyatomic ions molecular compounds or ionic compounds?

4.05 kg + 567.95 g + 100.1 g add the correct value using the correct sig figs and or least precise degree of precision. When i did least degree of precision i got 4718.

Dinitrogen pentoxide gas is formed by the reaction of nitrogen trioxide gas and nitrogen dioxide gas balanced equation

In an experiment to test a new drug's effectiveness, one group is given a larger dosage than is typically prescribed, and a second group is given a smaller dosage than is typically prescribed.

Waves move out through the ground from the source of an earthquake. True or false

The 14C content of a wooden harpoon handle found in the remains of an Inuit encampment in western Alaska is 61.9% of the 14C content of the same type of wood from a recently cut tree. How old is the harpoon?