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elena55 [62]
3 years ago
14

Billions of years ago, Earth was a very hot place due to

Chemistry
1 answer:
Svetach [21]3 years ago
8 0
Vulcanic activity (before actual oceans formed, the water was split into its different elements, but evaporated after a time to form water and cool the planet)
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A container holds 6.4 moles of gas. Hydrogen gas makes up 25% of the total moles in the container. If the total pressure is 1.24
Degger [83]
  The   partial  pressure of hydrogen is 0.31  atm

calculation

find the number of  hydrogen   moles the container, that is

25/100  x 6.4  =1.6 moles of hydrogen

find the  partial pressure for hydrogen  in 1.6 moles

that is   6.4  moles=  1.24 atm
            1.6  moles= ?

by  cross  multiplication

1.6moles  x1.24  atm/ 6.4 moles=  0.31 atm
6 0
3 years ago
adam wants to investigate the strengths of different acids and alkalis. He has 2 different acid solutions and 2 different alkali
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Answer:

The strength of an acid or alkali depends on the degree of dissociation of the acid or alkali in water. The degree of dissociation measures the percentage of acid molecules that ionise when dissolved in water. He could use universal indicators or litmus paper for this.

Explanation:

(See answer for the explanation)

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kirill115 [55]

A) Chemicals

(I'm pretty sure)

3 0
3 years ago
What is the electronegativity difference for a bond between potassium and iodine? A. 3.3 B. 4.6 C. 0.4 D. 1.7
user100 [1]
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7 0
3 years ago
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A car is traveling 70km in 45 minutes. How many miles an hour is the car traveling?
labwork [276]

52

Explanation:

70x45÷60= 52

I hope this is helpful

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2 years ago
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