Explanation:
13 are the number of atoms
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Answer:
b.
Explanation:
Cation and anion.
For example Na+ and Cl- -----> NaCl.
Yes, aluminum is flammable
Answer:

Explanation:
Given that,
The wavelength of a microwave is 7.42 mm or 0.00742 m
No. of photons, n = 359
We need to find the energy produced by this no of photons. It can be given by the formula as follows :

or

So, the required energy is
.