Which of the following is always equal to the number of protons in an atom 1pc of a given element?
Mass number
Olonic number
O Atomic number

100mg magnesium reacts with 20ml of 1.0m hcl

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.

Did the detergents containing enzymes work better at removing stains than those containing no enzyme? why or why not?