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Alex787 [66]
3 years ago
15

What trend would you predict for the next ten years for each region?

Chemistry
1 answer:
Artemon [7]3 years ago
3 0
The new trend will probably be the technology that's in that certain year. Like the trend in the modern days are all electronics or will have to do with electronics. Hope this helps! :) Pls mark me as the BRAINLIEST!!!
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Calculate the mole fraction of each component in a solution with 6.87 g of sodium chloride (NaCl) dissolved in 65.2 g of water.
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Answer:

mole fraction of NaCl = 0.03145.

mole fraction of water = 0.9686.

Explanation:

  • Mole fraction is an expression of the concentration of a solution or mixture.
  • It is equal to the moles of one component divided by the total moles in the solution or mixture.
  • The summation of mole fraction of all mixture components = 1.

mole fraction of NaCl = (no. of moles of NaCl) / (total no. of moles).

<em>no. of moles of NaCl = mass/molar mass </em>= (6.87 g)/(58.44 g/mol) = 0.1176 mol.

<em>no. of moles of water = mass/molar mass</em> = (65.2 g)/(18.0 g/mol) = <em>3.622 mol.</em>

<em></em>

∴ mole fraction of NaCl = (no. of moles of NaCl) / (total no. of moles) = (0.1176 mol)/(0.1176 mol + 3.622 mol) = 0.03145.

<em>∵ mole fraction of NaCl + mole fraction of water = 1.0.</em>

∴ mole fraction of water = 1.0 - mole fraction of NaCl = 1.0 - 0.03145 = 0.9686.

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Object 1 is moving because the unbalanced force acting on the skateboard is causing it to <em>either move slower or move faster.</em> An example of this is when the skateboard is going down the hill. The unbalanced force is caused by the gravity which speeds up the skateboard.

Object 2 is also moving although it has a balance force; however, it is moving at a<em> "constant speed."</em> This is because the force of thrusting forward is being counteracted by a friction force of the <u>same magnitude.</u> Forces that are equal in magnitude and of opposing directions causing the speed to be constant. So, the bicycle is still moving.

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