3. The mass percent of nitrogen in NH4Cl is * O 16.7% nitrogen
0 25.0% nitrogen
0 26.2% nitrogen
O none of these

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?