What is the pH of a 0.0025M HCI solution?

Which compound is an electrolyte? 1. H2O 2. C2H6 3. H3PO4 4. CH3OH

Which compound is the strongest acid? H2S HBr Li2O LiBr

What is the mass of 9.86*1024 molecules of co2? the molar mass of co2 is 44.01 g/mol.

A reaction where one element replaces another in a compound is called a

Suppose that an element has two isotopes. The average atomic mass of the element is 45.737 u. One isotope has a mass of 40.149 u and an abundance of 37.46 %. Calculate the mass of the second isotope.

What is half-life? a.) the time it takes for a radioactive atom to lose half its electrons b.) the time it takes for half of any number of radioactive atoms to decay c.) the average time it takes for any element to disappear completely d.

Water molecules are made of slightly positively charged hydrogen atoms and slightly negatively charged oxygen atoms. which force keeps water molecules stuck to one another?

Which can be used to prevent initial entry of bacteria into the body

Which statememt describes gravity? Select three options

Unlike solids, gases can