You begin with a 88.75 gram unknown sample that contains Carbon, Hydrogen and Sulfur. Determine the percentage composition of sulfur if the compound contains 4.4 g of carbon, 775 g of hydrogen, and the remainder is sulfur.

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

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

Compare and contrast physical changes with chemical changes.