A hypothetical element has two main isotopes with mass numbers of 51 and 51. If 64.00% of
the isotopes have a mass number of 51 amu,
what atomie weight should be listed on the
periodic table for this element?
Answer in units of amu.

What type of reaction is zn + cucl2 → cu + zncl2?

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

What is the percent by mass of oxygen in fe2o3