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oasmith2005
08.01.2020 •
Chemistry
The image produced by a concave mirror will be if it is close to the mirror, and if it is far away from the mirror.
a.
upside down, upright
c.
upside down, the same
b.
upright, upside down
d.
upright, the same
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Ответ:
your answer is b
hope this helps!!!
Ответ:
C) 237.96682 amu
Explanation:
The symbol for neptunium-236 is given as;
²³⁶₉₃Np
This element has 93 protons and (236 - 93 = 143) neutrons.
Mass Number =Total mass of Protons + Total mass of neutrons
Total Mass pf protons = 93 * 1.007825 amu, = 93.727725 amu
Total mass of Neutrons = 143 * 1.008665 amu = 144.239095 amu
Mass = 144.239095 + 93.727725 = 237.96682 amu
Correct option is option C.