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Verizon [17]
3 years ago
5

PLEASE HELP! DUE IN 5 MINUTES! ( 10 points )

Chemistry
2 answers:
Tom [10]3 years ago
4 0

Answer:

This is what i got from google, so i would say C.)

Explanation:

Name Gold

Atomic Mass 196.967 atomic mass units

Number of Protons 79

Number of Neutrons 118

Number of Electrons 79

max2010maxim [7]3 years ago
3 0

Answer:

C

Explanation:

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sineoko [7]
We have Kc = 4.2 x 10^-2 (given but missing in the question)
and When the balanced equation for this reaction is:
PCl5(g) ↔ PCl3(g) + Cl2(g)
so, according to the Kc formula:
Kc = the concentration of products / the concentration of the reactants
so, to get the concentration of the reactants in equilibrium, the concentration of the products / the concentration of the reactants should equal the Kc value which is given in the question (missing in your question).
So by substitution in Kc formula: 
Kc   = [PCl3]*[Cl2] / [PCl5]
4.2 x 10^-2 =  0.18 * 0.25 /[PCl5]
∴[PCl5] = 0.18*0.25 / 4.2x10^-2 = 1.07
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What is the volume of a 5M solution with that has 16.5 moles?
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How does urban sprawl affect water consumption?
Vesnalui [34]

Answer:

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