Chemistry, 28.01.2021 19:20, aaliyahettorre
A student mixes two solutions: 10.0 mL of 0.0040 mol/L lead (II) nitrate, Pb(NO3)2 (aq), and 15.0 mL of 0.25 mol/L potassium chloride, KCl (aq). If the solubility product constant, Ksp, for lead (II) chloride, PbCl2, is 1.2 x 10-5 at 25°
°
C, will a precipitate form when these two solutions are mixed? Why?
Answers: 2
Chemistry, 22.06.2019 06:00, VamPL
Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl +4h2o enter the elemental symbol. view available hint(s) is reduced
Answers: 1
Chemistry, 22.06.2019 08:30, melikefood01
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
Answers: 1
Chemistry, 22.06.2019 21:00, Janznznz4012
Once similarity and one difference between a mixture of elements and a mixture of compounds
Answers: 3
A student mixes two solutions: 10.0 mL of 0.0040 mol/L lead (II) nitrate, Pb(NO3)2 (aq), and 15.0 mL...
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