Answer:
D. 2Cu + O2 = 2CuO
Explanation:
Then CuO, which is black, reacts with CO2 to form CuCO3 which is green.
Answer:
Emission spectra may be used in studying stars in order to determine what atoms makeup the individual star produces, due to the fact that each atom’s emission spectra biunique, one can observe the spectra emitted by the star and identify the atoms that are released by the light the star produces.
Answer:
The information from Mariner 6 and Mariner 7
Explanation:
Because they had not been launched yet
All of the above I think it might not be right
Do it urself ;) jdhdhdhdhdhhdhdhdhdhdhdhdhdhgdhd