Chemistry, 07.09.2020 01:01 jamarstand
In the chemical closet, you found an unlabeled vial with a solid piece of an unknown element inside (element Z) You decided to put it in the mass-spec to figure out its atomic mass. The results showed that it has two naturally occurring isotopes, Z-85, and Z-87. Z-85 has a natural abundance of 72.17% and a mass of 84 912 amu Z-87 has a natural abundance of 27 83% and a mass of 86 909 amu. Calculate the average atomic mass and determine the identity of mystery element Z
Answers: 3
Chemistry, 22.06.2019 13:00, yaneiryx5476
Is 9 correct? and can someone me with 10? it’s due tomorrow, you
Answers: 1
Chemistry, 22.06.2019 22:30, skinniestoflegends
Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.
Answers: 2
Chemistry, 22.06.2019 23:00, NewKidnewlessons
What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?
Answers: 3
In the chemical closet, you found an unlabeled vial with a solid piece of an unknown element inside...
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