Chemistry, 25.07.2019 16:50 tiggyandrep2dbee
The half-life of an element is 200 years. if a 30 gram sample was originally deposited, how much is left after 200 years? question 2 options: 10 grams 15 grams 30 grams 60 grams pls i need an a
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Drug abuse will not lead to physical and psychological dependence. true or false ?
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An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it
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Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?
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Chemistry, 22.06.2019 14:00
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
Answers: 3
The half-life of an element is 200 years. if a 30 gram sample was originally deposited, how much is...
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