Answer:

Explanation:
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In this case, when performing units conversions involving two proportional factors we need to make sure we first convert to the base unit and then to the target one; thus, since 1 kg = 1000 g and 1 g = 1000 mg, we set up the following expression:

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Plants do not need Oxygen because they take in <span>Carbon Dioxide and make
</span><span>Oxygen they don't need </span> <span>Oxygen</span>
The purpose of a switch in a series circuit is to make it easy to open or close the electrical circuit, turning the flow of electricity on or off. A light bulb in a series circuit is used to determine whether or not electricity is flowing.
Moles * Avogadro constant = 5.52 * <span>6.022 x 10^23</span>
Platinum:
850 Platinum: 85% platinum
950 Platinum: 95% platinum
900 Platinum: 90% platinum
Gold:
24 karat: 99.9% gold; the purest form.
22 karat: 91.7% gold
18 karat: 75% gold
14 karat: 58.3% gold
10 karat: 41.7% gold