What was the exact exercise statement? For instance, you need to find the percent that something is of something else, but what are the something (volume, mass, etc) and the something else?
Some states restrict the sale of consumer products that have too high of a VOC (Volatile Organic Compound) content. The VOC contents in these state is determind by "percent VOC by weight". A manufacturer of a consumer product measures the VOC content of their product as follows 43g/L. How can this be converted to "percent VOC by weight?
One liter (L) is the volume of a kilogram of distilled water at 4°C. A kilogram is 1 000 grams. It appears that your expression "43g/L" can be restated as "43g/1000g". Can you take it from there? (Notice that g will cancel.)
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