2 years ago

Which exponential expression represents the numerical expression 112⋅112⋅112⋅112? (112)4

Chemistry

2 answers:

Leni [432]2 years ago

8 0

The answer is the first one

Nat2105 [25]2 years ago

5 0

(12)4 is the answer

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It is given that r = 0.283 nm. As 1 nm = $10^{-9} m$ .

Hence, 0.283 nm = $0.283 \times 10^{-9} m$

Formula for coulombic energy is as follows.

$U_{coulomb} = -1.748 \frac{e^{2}}{4 \pi \epsilon_{o} r}$

where, e = $1.6 \times 10^{-19}$ C

$\epsilon_{o}$ = $8.85 \times 10^{-12}$

$U_{coulomb} = -1.748 \frac{(1.6 \times 10^{-19}^{2}}{4 \times 3.14 \times 8.85 \times 10^{-12} \times 0.283 \times 10^{-9}}$

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So, 1 J = $\frac{1 eV}{1.6 \times 10^{-19}}$

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Therefore, U = $1.423 \times 10^{-18} J \times 1.67 \times 10^{-27}$ kJ/mol

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2 years ago

Which exponential expression represents the numerical expression 112⋅112⋅112⋅112? ​(112)4​

Which exponential expression represents the numerical expression 112⋅112⋅112⋅112? (112)4