Which of the following chemical reactions is not an oxidation-reduction reaction?
cuso4...
Chemistry, 29.01.2020 10:47 MissSusan2253
Which of the following chemical reactions is not an oxidation-reduction reaction?
cuso4 + bacl2 yields baso4 + cucl2
n2 + 3h2 yields 2nh3
zn + h2so4 yields znso4 + h2
2na + cl 2 yields 2nacl
Answers: 1
Chemistry, 21.06.2019 19:10
Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?
Answers: 1
Chemistry, 21.06.2019 20:50
Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread
Answers: 2
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.)
Answers: 1
Chemistry, 22.06.2019 13:00
What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?
Answers: 2
Computers and Technology, 10.05.2021 16:00
Mathematics, 10.05.2021 16:00
Mathematics, 10.05.2021 16:00
Mathematics, 10.05.2021 16:00
Spanish, 10.05.2021 16:00
Arts, 10.05.2021 16:00
Mathematics, 10.05.2021 16:00
Chemistry, 10.05.2021 16:00