1.A 0.4505 g sample of CaCO3 was dissolved in a small amount of concentrated HCl and the resulting solution diluted to 250.0 mL in a volumetric flask. A 25.00 mL sample of the solution required 24.25 mL of an EDTA solution for titration to the Eriochrome Black T end point. What is the concentration of the EDTA solution?

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?