Chemistry, 24.08.2020 01:01 danielwu462
Anatomy+ Chemistry List the 8 common ions in the human body and their charge. Identify each as a cation or anion.
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Chemistry, 21.06.2019 17:50
Which best describes why nh4+ can form an ionic bond with cl-?
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Chemistry, 21.06.2019 22:30
Embryos of different species look very similar, which shows that the organisms share a ancestor.
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Chemistry, 22.06.2019 09:00
Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?
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Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) ā h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 Ā°c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Anatomy+ Chemistry List the 8 common ions in the human body and their charge. Identify each as a cat...
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