(giving 50 points! )

20. use the diagram below.
which statement best explains why the mercury has not risen as high as the alcohol even though both thermometers are measuring the same water temperature
a) there is less mercury in the thermometer
b) the temperature of the water measured by the mercury is lower
c) the mercury atoms move faster and farther apart than the alcohol molecules
making it rise higher
d) alcohol atoms move faster and farther apart than the mercury molecules

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?

Why is carbon ideal for making different compounds?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.