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Which SI unit is most appropriate for measuring the diameter of a pencil's eraser?
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1. Intro to General Chemistry
SI Units
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28 grams equals how many kilograms?
A
0.28 kg
B
2.8 kg
C
280 kg
D
0.028 kg
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Understand the relationship between grams and kilograms: 1 kilogram (kg) equals 1000 grams (g).
Set up the conversion factor to convert grams to kilograms: multiply the number of grams by \( \frac{1\ \text{kg}}{1000\ \text{g}} \).
Write the conversion expression for 28 grams: \( 28\ \text{g} \times \frac{1\ \text{kg}}{1000\ \text{g}} \).
Perform the multiplication and division to convert grams to kilograms, keeping track of units to ensure grams cancel out.
Express the final answer in kilograms, which will be a decimal value less than 1 since 28 grams is less than 1 kilogram.
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