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What is the concentration in molarity of 10 parts per billion of arsenic in US drinking water?
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Can you shower in water that has a 065 ppb arsenic level?
This should be safe. The USEPA has an arsenic standard for drinking water of .010 parts per million (10 parts per billion). This is for total arsenic both organic and inorganic. Toxicity varies as the type. The minimum detection limit for arsenic is in the 1-5 ug/L range (1 to 5 ppb). Use of asenic contaminated water above the drinking water standard should cause no problems if the water is not drunk during the shower.
Is 1000 parts per billion of phosphate high for drinking water?
This concentration of phosphates (1 000 ppb = 1 ppm = 1 mg/L) is without importance for drinking water.
What is Safe arsenic level in drinking water?
Arsenic may be found in water which has flowed through arsenic-rich rocks. Severe health effects have been observed in populations drinking arsenic-rich water over long periods in countries world-wide. 0.01 mg/L was established as a provisional guideline value for arsenic. Based on health criteria, the guideline value for arsenic in drinking-water would be less than 0.01mg/L. Because the guideline value is restricted by measurement limitations, and 0.01 mg/L is the realistic limit to measurement, this is termed a provisional guideline value.
Does tobacco contain arsenic?
In minute quantities (approx.10-30 micrograms/kg in tobacco smoke), far too small to do any -- noticeable harm when compared to the other ingredients. And far too little to do any noticeable harm when compared to the levels of arsenic in the food we eat, the water we drink and the 'fresh air' breathe. The smoke from one cigarette MAY contain UP TO 30 nanograms (billionths of a gram) of arsenic. The maximum level of arsenic allowed in drinking water is 10 parts per billion. So half a litre of water (500grams) may contain 5,000 nanograms of arsenic, equivalent to that from over 150 cigarettes or more, and still be considered 'safe'. The maximum level of arsenic in food, such as bacon and eggs, is 500 parts per billion. A 'safe' egg weighing approximately 60 grams may contain up to 30,000 nanograms of arsenic - 1,000 cigarettes-worth. P.S. Historically, some tobacco may have contained signficantly greater concentrations of arsenic. (Tobacco Control are not particular concerning the source of their 'facts'.) The insecticide lead arsenate was widely used, not only on tobacco but also on other crops, such as apples and cranberries. Its use was banned in the 1980s.
Natural flouraid decrees dental caries same as added flouraid?
It all has to do with the concentration of FLUORIDE. Through extensive research over many decades, it has been determined that the optimal fluoride concentration in drinking water supplies to reduce the incidence of dental cavities in the population is 1 part per billion. If this concentration occurs naturally in a water supply, nothing needs to be done. If the naturally occurring fluoride is below the optimal concentration, addition fluoride can be added as necessary.
What are three ways you can measure concentration?
The three main ways are: molarity (M) = moles solute/liters solution; molality (m) = moles solute/kilograms solvent; mole fraction = moles 1 component/total moles all components. There's also percent by volume, percent by mass, and normality.
My phosphate levels in drinking water is 2500parts per billion is that harmful to my health?
I am thinking so.
How much helium is in the Earth's crust?
In the crust, the element helium is at a concentration of 8 parts per billion.
How many calories does drinking coffee burn?
Almost none. Coffee does not increase metabolism significantly.
Is Density is the measurement of the number of atoms or molecules in a given volume?
Density is the relationship between mass and volume. the number of molecules in a given mass is molarity. -------------------------------------------------- No it is not. Because atoms come with different masses, so you could have 1 billion atoms of hydrogen occupying the same volume as 1 billion atoms of gold but the gold would weigh more than the hydrogen.
How much money per year does the us government make on underage drinking?
They do not make anything. They acttually end up spending $58 billion a year for it.
What is nature's nuclear fission reactor?
Oklo in Africa when the natural concentration of Uranium-235 was near 5% instead of the current 0.7%. This was about 3 billion years ago.
