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djyliett [7]
3 years ago
12

Dante drew a diagram to show how a wire uses the magnetic field of a magnet to induce an electric current. How can Dante correct

the diagram?
He can move the wire upward instead of downward.

He can connect the wire to both ends of the ammeter.

He can change the wire from coiled to straight.

He can place the wire between the poles of the magnet and not move it.

Chemistry
2 answers:
eduard3 years ago
8 0
I got the answer was B because to make a circuit work, you need all of the ends attached. Hope I helped!
NemiM [27]3 years ago
7 0

Answer: Dante should connect the wire to both the ends of the ammeter.

Explanation: When wire is moved between the two magnets, an electric current is induced in the wire due to the magnetic field. This induced current would be detected by the ammeter.

For this, the wire at both the ends must be connected to the ammeter.

So, he should correct the diagram by connecting both the ends of the ammeter.

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Predict the outcome of this reaction. Balancing doesn't matter. <br><br> Mg + H2O --&gt;
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Answer:

MgO + H₂

Explanation:

The products of reaction is MgO  and hydrogen gas.

This is a single displacement reaction.

In this reaction, the possibility of the reaction is determined by position of the atoms on the activity series.

 Mg is higher than H on the activity series, so it is more reactive and it then displaces the hydrogen in water;

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A bottle of wine contains 9.81 grams of C2H5OH, dissolved in 87.5 grams of water. The final volume of the solution is 100.0 mL.
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Answer:

[EtOH] = 2.2M and Wt% EtOH = 10.1% (w/w)

Explanation:

1. Molarity = moles solute / Volume solution in Liters

=> moles solute = mass solute / formula weight of solute = 9.8g/46g·mol⁻¹ = 0.213mol EtOH

=> volume of solution (assuming density of final solution is 1.0g/ml) ...

volume solution =  9.81gEtOH + 87.5gH₂O = 97.31g solution x 1g/ml = 97.31ml = 0.09731 Liter solution

Concentration (Molarity) = moles/Liters = 0.213mol/0.09731L = 2.2M in EtOH

2. Weight Percent EtOH in solution (assuming density of final solution is 1.0g/ml)

From part 1 => [EtOH] = 2.2M in EtOH = 2.2moles EtOH/1.0L soln

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<h3>What is the molar mass?</h3>

We know that;

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0.76 * 0.250MM =  26.7

MM= 26.7/0.76 * 0.250

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