Aromatic compounds contain a benzene ring

What is an estimated number? a. An integer c. An exact number b. An imaginary number d. A measured numbe

He are the number of protons represented in the periodic table?

What units are used to measure air pressure?

What is the mass in grams of 1.204 x 1024 atoms of carbon?

There's one more than one kind of balance used in laboratory True Or False

How many grams of the excess reactant remain assuming the reaction goes to completion and that you start with 15.5g of na2s and 12.1g cuso4?

Which elements can be found in the sun? a. hydrogen and oxygen b. helium and oxygen c. hydrogen and helium d. hydrogen and nitrogen?

A sample of hydrogen gas at 2.0 atmospheres and 273 k occupies a volume of 5.0 liters. the gas sample is completely transferred to a 10.0-liter sealed, rigid container.

To make sure that the white powder was all sodium chloride and not mixed with sodium hydrogen carbonate, would you need to add a little less or a little more hydrochloric acid to the reaction?

A 10.0 gram sample of h2o at 23.0c absorbs 209 joules of heat. what is the final temperature