Why is the mass of each isotope not a whole number.

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

In which situation can a mixture always be called a solution

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate