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lilavasa [31]
3 years ago
14

A mole is __________ x 1023 objects.

Physics
2 answers:
Tems11 [23]3 years ago
4 0
A mole is 6.022 x 1023 objects.<span />
bixtya [17]3 years ago
3 0
A mole is equivalent to 6.02 x 10^23. It is also known as Avogadro's Number. It is represented by symbol N,a. It made it possible to count particles in the given mass of the object for chemists.
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How would the products of electrolysis be different is a solution of zinc chloride was used instead of molten zinc chloride?
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2 years ago
An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up. Now a slab of dielectric material is
natita [175]

Answer:

The charge on the capacitor had increased

Explanation:

The expression for the capacitance of an air-filled parallel-plate capacitor is as follows as;

C=\frac{\epsilon _{0}A}{d}  

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When a slab of dielectric material is placed between the plates of the capacitor then the expression for the capacitance is as follows;

C=\frac{K\epsilon _{0}A}{d}

Here, K is the dielectric constant.

In the given problem, a slab is inserted between the plates of the capacitor then the capacitance of the capacitor will increase in this case. Therefore, the option (a) is true.

The expression for the charge stored in the capacitor is as;

Q= CV

Here, Q is the charge and V is the potential.

The charge will also increase in this case as the charge stored in the capacitor is directly proportional to the capacitance. Therefore, the option (d) is not true.

The expression for the energy stored in the capacitor is as follows;

E=\frac{CV^{2}}{2}

The voltage is constant in the given problem but the capacitance increases then the energy stored in the capacitor will increase. Therefore, the option (b) is not true.

The voltage across the capacitor will remain same as the capacitor is still connected to the battery. Therefore, the option (c) is not true.

Therefore, only option (a) is true.

3 0
2 years ago
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