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MatroZZZ [7]
4 years ago
12

He then takes a powerful magnet and positions it below the table and the keys. He finds that he is able to drag the keys along t

he table by moving the magnet. This demonstrates that
Chemistry
1 answer:
Mamont248 [21]4 years ago
7 0

C. magnetic forces act at a distance

Explanation:

Since he was able to drag the keys along the table by moving the magnet, it shows that magnetic forces acts a distance.

Magnetism is a property exhibited by a wide range of materials.

Around a bar magnet, there are field forces in which the forces of the magnets are felt.

  • Magnetic forces are non- contact forces. They don't need to be together to exert their force.
  • This is why magnetic forces act at a distance.

learn more:

Electromagnet brainly.com/question/2191993

#learnwithBrainly

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A student prepares a solution of sodium chloride by dissolving 116.9 g of NaCl into enough water to make 1.00 L of solution. How
zhenek [66]

Answer:

<em>The accurate label for the solution is</em><em> </em><u><em>2.00 mol/L NaCl.</em></u>

Explanation:

Molrity = mass ÷ molar mass

Molar mass of NaCL = 58.44 g/mol

Weighed mass = 116.9g

⇒ Molarity of the solution = \frac{116.9}{68.44} = 2.0M

<em />

<em>Therefore, the accurate label for the solution is </em><u><em>2.00 mol/L NaCl.</em></u>

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Keith_Richards [23]

Answer:

22.67 L of PH₃

Explanation:

The balanced equation is:

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From the equation:

34 L \times \dfrac{1 \ mol \ of H_2 }{22.4 \ L \ H_2} \times \dfrac{4 \ mol \ of \ PH_3}{6 \ mol \ H_2} \times \dfrac{22.4 \ L \ PH_3}{1 \ mol \ PH_3}

= 22.67 L of PH₃

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Which equation agrees with the ideal gas law?
photoshop1234 [79]
<span>\frac{(P1)(V1)}{T1}=\frac{(P2)(V2)}{T2} is directly related to the ideal gas law.

The ideal gas law states that:PV=nRT. Rewriting this gives:\frac{PV}{T}=nR. R is the universal gas constant, so its value is fixed. For a given sample, n is the number of moles of the gas, so its value would be fixed too. This means that the value of \frac{PV}{T} would be a fixed constant as well. Therefore, whatever the initial value \frac{(P1)(V1)}{T1} is, it should be equal to the final value \frac{(P2)(V2)}{T2}.</span>
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so radius

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