Chemistry, 12.02.2020 03:48 jfernald5658

Which of the changes are chemical changes? a. Candle wax is melted. b. A candle is burned. c. A silver teapot turns black. d. Two clear colorless salt solutions are mixed and a bright orange precipitate forms. e. Sugar crystals are ground to a fine powder.

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 10:00, Cythina2007

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

Answers: 1

continue

Chemistry, 22.06.2019 14:30, Tooey2331

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?

Answers: 3

continue

Chemistry, 22.06.2019 14:30, lorrainelopez

The three types is stress that act on earths rocks are compression, tension, and

Answers: 1

continue

Chemistry, 22.06.2019 21:50, BookandScienceNerd

Answer the questions about this reaction: nai(aq) + cl2(g) → nacl(aq) + i2(g) write the oxidation and reduction half-reactions: oxidation half-reaction: reduction half-reaction: based on the table of relative strengths of oxidizing and reducing agents (b-18), would these reactants form these products? write the balanced equation: answer options: a. 0/na -> +1/na+1e- b. nai(aq) + cl2(g) → nacl(aq) + i2(g) c. +1/na+1e- -> 0 /na d. -1/2i -> 0/i2+2e- e. no f. 4nai(aq) + cl2(g) → 4nacl(aq) + i2(g) g. 2nai(aq) + cl2(g) → 2nacl(aq) + i2(g) h. 4nai(aq) + 2cl2(g) → 4nacl(aq) + 2i2(g) i. nai(aq) + cl2(g) → nacl(aq) + i2(g) j. 0/cl2+2e -> -1/2cl- k. yes

Answers: 1

continue

You know the right answer?

Which of the changes are chemical changes? a. Candle wax is melted. b. A candle is burned. c. A silv...