What is the freezing point of a solution made by mixing 34.1 g of Na2CO3 and 500.0 g of water? (Kf is 1.86 °C/m for water)

In an energy pyramid, which level has the most available energy?

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery