Chemistry, 09.07.2019 10:00 wolfgirl4762
Pam stirred a packet of fruit punch drink mix into a pitcher of 6 cups of warm water until it dissolved. she then put in 10 ice cubes to cool down the mixture before she drank it. pam's brother nate watched her make the drink and said that two physical changes had occurred. pam thought only one had happened. who was right? a. neither pam nor nate are correct since both changes were chemical changes. b. nate was right. the ice cubes melted and the drink mix dissolved into the water. both are physical changes. c. pam is right. the drink mix dissolving into the drink was a physical change, but the ice melting was a chemical one. d. pam was right. the ice melting was a physical change, but the drink mix caused the water to change color so it was a chemical change.
Answers: 1
Chemistry, 22.06.2019 00:40
Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).
Answers: 2
Chemistry, 22.06.2019 21:50
Answer the questions about this reaction: nai(aq) + cl2(g) β 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) β nacl(aq) + i2(g) c. +1/na+1e- -> 0 /na d. -1/2i -> 0/i2+2e- e. no f. 4nai(aq) + cl2(g) β 4nacl(aq) + i2(g) g. 2nai(aq) + cl2(g) β 2nacl(aq) + i2(g) h. 4nai(aq) + 2cl2(g) β 4nacl(aq) + 2i2(g) i. nai(aq) + cl2(g) β nacl(aq) + i2(g) j. 0/cl2+2e -> -1/2cl- k. yes
Answers: 1
Pam stirred a packet of fruit punch drink mix into a pitcher of 6 cups of warm water until it dissol...
Biology, 24.12.2019 00:31