Is "diamonds are the hardest known substance" a physical property?

Why was Niels Bohr's atomic model superior to all the earlier models?

If a solution had an [OH-] = 3.00 x 10-10 moles/liter, what would be the pH value of this solution? 3.53 4.48

What type of atom is 2 (NH4) 2Cr2O7?

A 0.1 m solution of which salt is the most basic? (a) nano3 (b) naclo4 (c) nahso4 (d) nahco

6) Find the pH of the following solutions: a) 0.00010 M HClO4 b) 2.35 x 10-3 M HI c) 4.678 x 10-5 M HNO3 d) 0.0000877 M HCl e) 0.00020 M HF f) 0.0000061 M H3O+ g) 4.3 x 10-3 M NaOH (This is a base! Remember you will be finding pOH first!) h) 6.

If the theoretical yield of a reaction is 0.110 g and the actual yield is 0.104 g, what is the percent yield?

What is the name for CuCO3

Write out the stepwise ka reaction for the diprotic acid h2so3

A person can burn 550 Calories by running at a moderate pace for one hour. Calculate the number of Calories that would be burned if the person only ran for 22 minutes. (1 hr = 60 min) Write only the number (answer) with 3 sig. fig.

What color would I expect a solution of chromate ions to be after I add an excess of acids?