Which of the following ARE ISOTOPES? Please choose all options that fit that description 3 7^Li
3, 7^, Li

4 7^Be
4, 7^, Be

3 8^Li
3, 8, Li

4 7^Li
4, 7, Li

4 7^Be +2^

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?