Chemistry, 26.09.2021 14:00 RachelCamel
1. Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic
mass of a lead atom is 207.2 amu. Which isotope of lead is likely to be the most abundayt?
bundant?
Answers: 1
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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 19:50
If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?
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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.
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Two liquids are poured into a beaker. after a few seconds, the beaker becomes warm. which of the following best describes this reaction? a. an exothermic reaction b. a decomposition reaction c. an endothermic reaction d. a single-displacement reaction
Answers: 1
1. Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic
ma...
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