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ScienceNewb
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1. Fluorine compounds are added to water, the concentration being 0.90 ppm.
a. What amount of fluoride present 1.0g of water?
Solution- (just need to know what the number mean)
Divided 0.90 pm by 1,000,000, which I assume is the grams of substance per kilogram?
Then divided that number by fluorines molar mass (19) to get the answer of 4.7x10^-8
b. How much fluoride ions would you swallow if you drank 200ml water?
2. Convert 0.00036M (molarity) of Ca(OH)2 to ppm
Solution- I found the molar mass of the compound being ~74
3. For 0.20M of K2SO4, calculate mol of K+ ions, Sulfate ions and oxygen atoms
Solution - Molar mass I found to be ~174
4. Why should antacid tables be chewed before being swallowed?
5. Find concentration of vitamin c in g L^-1 when 40mg/100ml and do same for carbonhydrate at 8.5g/100ml
Solution- I'm guessing I just divided 40mg/100ml and 8.5g/0.1L but not sure if this makes sense?
a. What amount of fluoride present 1.0g of water?
Solution- (just need to know what the number mean)
Divided 0.90 pm by 1,000,000, which I assume is the grams of substance per kilogram?
Then divided that number by fluorines molar mass (19) to get the answer of 4.7x10^-8
b. How much fluoride ions would you swallow if you drank 200ml water?
2. Convert 0.00036M (molarity) of Ca(OH)2 to ppm
Solution- I found the molar mass of the compound being ~74
3. For 0.20M of K2SO4, calculate mol of K+ ions, Sulfate ions and oxygen atoms
Solution - Molar mass I found to be ~174
4. Why should antacid tables be chewed before being swallowed?
5. Find concentration of vitamin c in g L^-1 when 40mg/100ml and do same for carbonhydrate at 8.5g/100ml
Solution- I'm guessing I just divided 40mg/100ml and 8.5g/0.1L but not sure if this makes sense?
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