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question 19
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metric conversion (include appropriate commas, spaces, and abbreviations):
1,000 g = how many mg?
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question 20
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metric conversion (include appropriate commas, spaces, and abbreviations):
0.006 mcg = how many mg?
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question 21
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metric conversion (include appropriate commas, spaces, and abbreviations):
5,000 g = how many kg?
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Explanation:

Question 19

Step1: Recall metric prefixes

We know that \(1\ \text{g} = 1000\ \text{mg}\) (since "milli-" means \(10^{-3}\), so to convert grams to milligrams, we multiply by \(1000\)).

Step2: Perform the conversion

Given \(1000\ \text{g}\), multiply by \(1000\) to get milligrams: \(1000\times1000 = 1000000\ \text{mg}\)

Step1: Recall metric prefixes

We know that \(1\ \text{mcg}=10^{-3}\ \text{mg}\) (since "micro-" means \(10^{-6}\) and "milli-" means \(10^{-3}\), so \(1\ \text{mcg}=10^{-3}\ \text{mg}\)).

Step2: Perform the conversion

Given \(0.006\ \text{mcg}\), multiply by \(10^{-3}\) to get milligrams: \(0.006\times10^{-3}=6\times10^{-6}\ \text{mg}=0.000006\ \text{mg}\)

Step1: Recall metric prefixes

We know that \(1\ \text{kg} = 1000\ \text{g}\) (since "kilo-" means \(10^{3}\), so to convert grams to kilograms, we divide by \(1000\)).

Step2: Perform the conversion

Given \(5000\ \text{g}\), divide by \(1000\) to get kilograms: \(\frac{5000}{1000}=5\ \text{kg}\)

Answer:

\(1,000,000\ \text{mg}\)

Question 20