A radioactive element is one that is:

a. stable

b. not stable

c. found in all living organisms

d. both b & c

Which is an acid-conjugate base pair?

How many moles are contained in 6.55 x 10^23 formula units of KNO3?

A student finds two unlabeled flasks of clear liquids. One is believed to be 0.1 m nacl and the other to be 0.1 m naclo3. What is a quick way of determining what is in each flask?

The residue of coal decomposition that is used in the manufacture of steel is called: 1. coal gas 2. coke 3. coal tar

What do the broken lines connected to hydrogen atoms represent in this diagram

In the ground state, has only 1 electron in a p orbital. A. carbon B. fluorine C. hydrogen D. nitrogen E. aluminum

Which of the following is a mixture? alcohol water mercury ink

A gas occupies 3.5 L at standard pressure. Find the volume of the gas when the pressure is 1.5 atm.

What is the temperature (in K) of 16.45 moles of methane gas in a 4.95 L container at 4.68 atm?

What do we call the process by which cells obtain the energy that they need?