I need help ' please

Express the following number in scientific notation. 0.026890 =

Compare the equilibrium constants for the systems shown in the table. which favors products the most? which favors products the least? rank these systems in order from most to least in terms of favoring products rather than reactants. d > b > a > c c > a > b > d b > c > d > a a > d > c > b

Explain what happens at the saturation point when adding salt to water at room temperature.