About 75% of living matter is made up of which two essential chemicals?

A black bear consumes 100 kg of food in a single month. How much of this food would be field mice and rats (rodents) ?

Copper, silver, and gold are transition metals that fall into the same group on the periodic table. From the following list, identify those metals that cannot be oxidized by cations of all three of these metals from group 11.

3. A toy car is moving on a track at 4.0 m/s. If the toy car has 16 J of kinetic energy, what is the mass of the car in kilograms?

Which type of radioactive decay produces particles with the most mass? Alpha Beta Gamma

Which pair below describes isotopes of the same element?

List the symbols for all the elements with electron configurations that end as follows. Each n represents an energy level.

Why is it necessary for the measuring devices to be clean

Copper consists of two naturally occuring isotopes. their masses are 62.930 amu and 64.928 amu. calculate their abundances.

Which statement is true about inorganic compounds? A. They are not made of atoms. B. They contain carbon. C. They are not made from living things. D. They are all elements.

Which domain do you find the most interesting why