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ad-work [718]
3 years ago
7

Help asap plz thank you!

Chemistry
2 answers:
katrin [286]3 years ago
6 0
The answer is D, population
Molodets [167]3 years ago
4 0

Answer:

D) Population

Explanation:

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I don’t see any equal signs to make it an equation. Am I missing something?
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A closed system initially containing 1×10^-3 hydrogen 2×10^-3M iodine at 448 degree Celsius and is allowed to reach equilibrium.
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Answer:

Kc = 50.5

Explanation:

We determine the reaction:

H₂  +  I₂   ⇄   2HI

Initially we have 0.001 molesof H₂

and 0.002 moles of I₂

If we have produced 0.00187 moles of HI in the equilibrium we have to know, how many moles of I₂ and H₂, have reacted.

           H₂     +      I₂      ⇄   2HI

In:     0.001       0.002           -

R:       x                 x                2x

Eq:  0.001-x    0.002-x      0.00187  

x = 0.00187/2 = 9.35×10⁻⁴ moles that have reacted

So in the equilibrium we have:

0.001 - 9.35×10⁻⁴ = 6.5×10⁻⁵  moles of H₂

0.002 - 9.35×10⁻⁴ = 1.065×10⁻³ moles of I₂

Expression for Kc is =  (HI)² / (H₂) . (I₂)

0.00187 ² /  6.5×10⁻⁵ . 1.065×10⁻³ = 50.5

5 0
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18. How many moles of atoms are there in each of
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a) 1 mole of Ne

b) i/2 mole of Mg

c) 1570 moles of Pb.

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6.23*10^23= 1/ 6.23*10^23

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Number of moles in 3.25*10^5 gm of lead.

atomic weight of Pb=

n=weight/atomic weight

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number of moles= 4.50*10^-12/16

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Emily learns that ancient astronomers, such as Ptolemy, created a model of the solar system based only on what they could see wi
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Explanation:

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An aqueous solution is prepared by dissolving the salt formed by the neutralization of a weak acid by a weak base. Which stateme
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2. If Ka is lesser than Kb, the salt solution is basic

3. If Ka is equal to Kb, the salt solution is acidic

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