When calculating the average atomic mass, which of the following are needed for each isotope? Select all that apply. Question 3 options:

number of protons

mass

atomic number

percent abundance

The clouds are grey and ground is wet. a quantitative b qualitative

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?