The process of filtration was used to separate a sample into its components. what conclusion about the sample can be formed based on the technique used? it was a pure substance. it was a compound. it was a heterogeneous mixture. it was a homogeneous mixture

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

How are isotopes of the same chemical element alike? how are they different?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.