Mathematics, 27.06.2020 03:01 saeedalr366
Please help 1. rubidium has two isotopes, 72.2% rubidium-85, and 27.8% rubidium-87. Calculate the average atomic mass of rubidium. 2. Bromine also has two isotopes: 50.7% is bromine-79 and 49.3% is bromine-81. Can you estimate the average atomic mass of bromine without using a calculator? 3. What is the average atomic mass of fluorine, whose only naturally occurring isotopes has an atomic mass of 19?
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 15:00
1. a right triangle is graphed on a coordinate plane. find the length of the hypotenuse. round your answer to the nearest tenth. 2. use the angle relationship in the figure below to solve for the value of x. assume that lines a and b are parallel and line c is a transversal.
Answers: 1
Mathematics, 21.06.2019 17:00
Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?
Answers: 3
Mathematics, 21.06.2019 20:00
Ke’ajah has a coupon for 1/3 off the regular price, t, of a tent. which expression represents the price of the tent using the coupon? select the two correct expressions. a. 1/3t b. 2/3t c. t - 1/3 d. t - 2/3 e. t - 1/3t f. t - 2/3t
Answers: 1
Mathematics, 22.06.2019 00:00
This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer
Answers: 1
You know the right answer?
Please help 1. rubidium has two isotopes, 72.2% rubidium-85, and 27.8% rubidium-87. Calculate the av...
Questions
Health, 19.02.2021 20:00
Biology, 19.02.2021 20:00
Mathematics, 19.02.2021 20:00
Mathematics, 19.02.2021 20:00
Mathematics, 19.02.2021 20:00
