Chemistry, 22.01.2020 13:31 collegebound3506
Two protons and two neutrons are released as a result of this reaction. ? which particle is released?
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Chemistry, 22.06.2019 07:30
Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?
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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) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °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.)
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Chemistry, 22.06.2019 12:30
Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)
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Chemistry, 22.06.2019 13:30
Table sugar completely dissolved in water is an example of a?
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Two protons and two neutrons are released as a result of this reaction. ? which particle is release...
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