3 years ago

Magnesium chloride is an example of an ionic compound, which is a compound composed of what?

1 answer:

8 0

Magnesium chloride is an example of an ionic compound which is a compound composed of ?

Magnesium chloride is a compound which is composed of positive and negative ions. I hope this helps you :)

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Which is most likely to occur to native plants when the chemical composition of the soil they live in changes?

PSYCHO15rus [73]

Answer:

Explanation:

Both A and D are correct, because they will adapt from natural selection. Over time they will overcome the challenges of the new soil and be fine. however a few will die, but the best answer is D.

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3 years ago

Calculate the frequency of visible light having a wavelength of 486 nm

hjlf

Ν= c/λ

λ= 486 nm * ( 1 m / 1x10^9 nm) = 4.86 x10^-7 m

v= (3.00 x 10^8 m/s) / (4.86 x10^-7 m)
v= 6.1728395x 10^14 s^-1
= 6.14 x10^-14 Hz

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3 years ago

Which statement is true

ArbitrLikvidat [17]

Answer:

Explanation:

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3 years ago

Calculate the value of ΔG∘rxnΔGrxn∘ for the following reaction at 296 K. Ka = 2.9 × 10–8 and assume Ka does not change significa

oee [108]

Answer:

$\Delta G_{rxn}=42.7\frac{kJ}{mol}$

Explanation:

In this case, for the dissociation of hypochlorous acid, we know that the acid dissociation constant (Ka) is 2.9x10⁻⁸, which is related with the Gibbs free energy as shown below:

$\Delta G_{rxn}=-RTln(K)$

But in this case K is just Ka, therefore, at 296 K, it turns out:

$\Delta G_{rxn}=-8.314\frac{J}{mol*K}*296K*ln(2.9x10^{-8})\\\\\Delta G_{rxn}=42.7\frac{kJ}{mol}$

Such result, means that the reaction is nonspontaneous at the given temperature, it means it is not favorable (not easily occurring).

Best regards.

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3 years ago

Can you identify an atom without knowing number of neutrons in it?

Pie

Answer:

yes

Explanation:

to identify an atom you need to know either it's atomic number or it's proton number

while the neutron is used to determine it's atomic mass

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2 years ago