Calculate the average atomic mass of bromine. one isotope of bromine has a molar mass of 78.92 g/mol and a relative abundance of 50.69%. the other major isotope of bromine has a molar mass of 80.92 g/mol and a relative abundance of 49.31%.

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent