Copper has two isotopes, copper-63 and copper-65. The relative abun-
dance of copper-63 is 69....
Chemistry, 26.02.2020 04:17 mathnation1
Copper has two isotopes, copper-63 and copper-65. The relative abun-
dance of copper-63 is 69.1% and copper-65, 30.9%. Calculate the
average atomic mass of copper.
Answers: 1
Chemistry, 22.06.2019 14:30, KennyOaks6230
Which of the following units is not an official si unit
Answers: 1
Chemistry, 22.06.2019 17:30, katherineweightman
What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.
Answers: 1
Chemistry, 22.06.2019 23:00, lufung8627
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
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