Chemistry, 27.06.2019 09:00 roshawnandries5471
The chemical equation for a reaction between k2cr2o7 and hcl is shown. k2cr2o7 + 14hcl β 2crcl3 + 2kcl + 3cl2 + 7h2owhich of the following identifies the reactant that acts as an oxidizing agent in the reaction and explains the answer? k2cr2o7, because the oxidation number of k changes from +6 to +3. k2cr2o7, because the oxidation number of cr changes from +6 to +3. hcl, because the oxidation number of h changes from β1 to 0. hcl, because the oxidation number of cl changes from β1 to 0.
Answers: 1
Chemistry, 22.06.2019 04:40
Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)
Answers: 2
Chemistry, 22.06.2019 07:30
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 10:00
Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption
Answers: 2
The chemical equation for a reaction between k2cr2o7 and hcl is shown. k2cr2o7 + 14hcl β 2crcl3 + 2k...
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