A6.0 gram sample of an unknown compound is dissolved in 125 g of water. the solutions freezing point is lowered to 1.38 c° below the freezing point of pure water. what is the molar mass of the sample? k for water is 1.86 c°/m.

When the following equation is balanced using the smallest possible integers, what is the coefficent of oxygen gas? c7h16o(g) + o2(g) → co2(g) + h2o(g) -1 -5 -8 -16 -21

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

Name the element in group 17, period 2. (periodic table)