Chemistry, 17.12.2019 01:31, alexkrol30083
Why are soluble ionic compounds such as mgcl2 electrolytes? choose one: the compound contains a metal, and metals are conductors. the ions dissociate from each other in solution and are free to move independently. electrons are released into solution when the compound dissolves. individual molecules of the compound form ions in water?
Answers: 3
Chemistry, 21.06.2019 17:00, kaylaamberd
Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).
Answers: 1
Chemistry, 22.06.2019 07:00, erickamurillo9929
In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?
Answers: 2
Chemistry, 22.06.2019 11:40, Wemaybewrong
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.)
Answers: 1
Why are soluble ionic compounds such as mgcl2 electrolytes? choose one: the compound contains a me...
Mathematics, 24.08.2021 02:10
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