subject
Chemistry, 29.10.2020 20:50 chinadoll24

20 points A copper wire was cut into pieces and dropped into a test tube containing acid, Bubbles formed immediately, the liquid in the test tube turned green, and the pieces of wire were no longer visible, which most likely happened to the pieces of copper wire?

А. The copper wire was chemically changed when it was cut and placed in the acid,

B the copper wire was physically changed when it was cut and placed in the acid,

C The copper wire was physically changed when it was cut and chemically changed when it was placed in the acid,

D The copper wire was chemically changed when it was cut and physically changed when it was placed in the acid,

ansver
Answers: 1

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 19:00, lizbeth232001
Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.
Answers: 2
image
Chemistry, 22.06.2019 05:00, Ashleyvasquez2261
Type the letter that represents the correct location for each particle type below.
Answers: 1
image
Chemistry, 22.06.2019 10:00, zionlopez543
Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.
Answers: 1
image
Chemistry, 22.06.2019 18:10, pearfam98
Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
You know the right answer?
20 points A copper wire was cut into pieces and dropped into a test tube containing acid, Bubbles f...

Questions in other subjects:

Konu
Mathematics, 18.03.2021 02:10
Konu
English, 18.03.2021 02:10
Konu
Mathematics, 18.03.2021 02:10