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katovenus [111]
3 years ago
8

How many minutes does light from the sun reach earth

Chemistry
1 answer:
Akimi4 [234]3 years ago
6 0

Answer:

8 mins and 20 secs

Explanation:

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bonufazy [111]
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7 0
3 years ago
A closed system initially containing 1×10^-3 hydrogen 2×10^-3M iodine at 448 degree Celsius and is allowed to reach equilibrium.
GaryK [48]

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
3 years ago
WILL GIVE BRAINLIEST!! Determine the volume of a container that holds 2.4 mol of gas at STP.
kykrilka [37]

Answer:

2.4 mol x 22.4 liter = 53.76 liters

1 mole

Explanation:

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3 years ago
Use the portion of the periodic table shown below to answer the questions
leva [86]

Answer:

Part 1:sodium

rubidium

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The number of protons is equal to the no. of neutrons from the electronic arrangement of magnesium and the no. of electrons is got from the atomic no. of magnesium

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3 years ago
Which statement describes how an atom in the ground state becomes excited
Marysya12 [62]
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4 0
3 years ago
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