What is the energy of an electron in the first energy level of hydrogen?
1 answer:
Answer:
B
Explanation:
hydrogen it's atomic number (Z) is
recall from the formular of Energy
E = -2.178 x 10-18/Z
= -2.178 x 10-18/1
E = -2.178 x 10-18
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The first one is substance 3
The second one is Oxygen, Helium, and carbon dioxide
The third one is the oil floats on top of the water
Physical property of matter because you don't have to change its chemical make-up to tell, you can observe it using your senses and tools.
44g of CO2 can produce by the reaction of carbon with oxygen
Answer:
2Be + O2 = 2BeO
its a synthesis
Explanation:
Answer:
264g
Explanation:
C + O2 -> CO2
_g + _g -> 396g
396÷3=132
C (132g) + O2 (264g) -> CO2 (396g)
