What are the mole fraction and molality of a solution that contains 8.50 g of ammonia, NH3, dissolved in 125 g of water

How many joules of heat are absorbed to raise the temperature of 650 grams of water from 5.00c to it's boiling point, 100c

The first element on the periodic table of elements is carbon. a. true b. false

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.