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Stolb23 [73]
3 years ago
14

If an element gains an electron, will it form a positive ion or a negative ion?

Chemistry
1 answer:
yulyashka [42]3 years ago
5 0

Answer:

it form a negative ion because the no. of negative charges exceeds that of the positive charges

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Two 0.75 Amp loads are connected in parallel with a 2500 Milliamperehour Ni-Cd battery. Approximately how long can the battery p
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Explanation:

It is given that two loads have 0.75 Ampere current each. And, they contain 2500 milli ampere per hour Ni-Cd battery.

As both the loads are connected in parallel. Hence, total current will be calculated as follows.

               I = I_{1} + I_{2}

                 = 0.75 A + 0.75 A

                 = 1.5 A

                 = 1.5 A \times \frac{1000 mA}{1 A}

                 = 1500 mA

Relation between time and capacity of battery is as follows.

             Capacity = Current × time (in hour)

therefore,        time = \frac{Capacity}{Current}

                                = \frac{2500 mA. h}{1500 A}

                                = 1.667 hr

Thus, we can conclude that the battery provide power to the load up to 1.667 hours.

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Why do scientists look for patterns in the world?
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B. Patterns can help explain observations.

Explanation:

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