When 157. g of alanine C3H7NO2 are dissolved in 1050. g of a certain mystery liquid X, the freezing point of the solution is 4.90°C less than the freezing point of pure X. Calculate the mass of sodium chloride that must be dissolved in the same mass of X to produce the same depression in freezing point. The van't Hoff factor =i1.62 for sodium chloride in X.

How many moles does 80.0 h2o respresent

The poh of a solution is 6.0. which statement is correct? use poh=-log[oh and ph+poh= 14 o o o the ph of the solution is 20.0. the concentration of oh ions is 1.0 x 10-8 m- the concentration of oh ions is 1.0 x 106 m- the ph of the solution is 8.0.

My element is sodium 1. summarize the physical and chemical properties of the element you selected. 2. in the lesson, many models were used to depict the atom. how did these models you understand atomic structure? 3. how do protons, neutrons, and electrons differ in terms of their electrical charges and locations within the atom? 4. describe the four fundamental forces. which of these forces are involved in chemical bonding?answer these questions or at least one.