I'm completely at a loss on how to solve this problem.
"Persons are medically considered to have lead poisoning if they have a concentration of greater than 10 micrograms of lead per deciliter of blood. What is this concentration in parts per billion?"
"Persons are medically considered to have lead poisoning if they have a concentration of greater than 10 micrograms of lead per deciliter of blood. What is this concentration in parts per billion?"
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10 micrograms = 10/1,000,000 grams
blood density is 1060 kg / cubic meter
1kg = 1000 grams
blood density is 1060 x 1000 grams / cubic meter
1 liter = 1/1000 cubic meter
blood density is 1060 grams / liter
1 deciliter of blood = 1/10 liter
blood density is 106 grams / deciliter
10/1,000,000 grams lead per 106 grams blood
10 grams lead per 106,000,000 grams blood
10/106 grams lead per 1,000,000 grams blood
10,000/106 grams lead per billion grams blood
94.34 parts per billion
blood density is 1060 kg / cubic meter
1kg = 1000 grams
blood density is 1060 x 1000 grams / cubic meter
1 liter = 1/1000 cubic meter
blood density is 1060 grams / liter
1 deciliter of blood = 1/10 liter
blood density is 106 grams / deciliter
10/1,000,000 grams lead per 106 grams blood
10 grams lead per 106,000,000 grams blood
10/106 grams lead per 1,000,000 grams blood
10,000/106 grams lead per billion grams blood
94.34 parts per billion
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Decaliter = 10 liters
1 microgram = 1/1000 of gram = 1 x 10^-3 grams
That SHOULD be enough hints to get you started, but very likely it isn't enough. You need to understand how proportions and percentages are calculated.
1 microgram = 1/1000 of gram = 1 x 10^-3 grams
That SHOULD be enough hints to get you started, but very likely it isn't enough. You need to understand how proportions and percentages are calculated.