Answer:
A) 6.15×10^14 per sec
B)2.5 sec
Explanation:
Wavelength of light = 488 nm
speed of light = 3×10^8 m/s
therefore, frequency of light
⇒
⇒ν= 6.15×10^14 per sec
b) distance between moon and earth = 3.8×10^5 km.
= 3.8×10^8 m
light travel from earth moon and back to earth
therefore, distance traveled= 2× 3.8×10^8 m = 7.6×10^8 m
therefore time= distance/speed
⇒ time=
= 2.5 sec
So, for a round trip time required is 2.5 sec.
Answer:
Smaller
Explanation:
Though, your question is not too clear but base on my understanding, I have the following explanation;
The angle in the bromine-oxygen bonds will be smaller than the ideal angle, say for example, if the ideal angle is 120°, the actual angle of bromine-oxygen bonds will have lesser value because of the absence of lone pairs of electrons from the central atom in the ion. This will tend to squeeze the two single bond that exist before causing lesser angle.
Answer: Nitrogen
Explanation: Nitrogen has an atomic number of 7 and an atomic mass of about 14 u
Explanation:
what are the unit given for the questions
-log(1.2x10^-3) = 2.92 = pH
14 - 2.92 = 11.08 = pOH
socratic
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