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KH2AsO4 is potassium arsenate with molar mass 180.921 g/mol while the Atomic Mass of Arsenic is 74.921 g/mol.So 0.833 g of potassium arsenate contains 0.345 g of Arsenic.
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How many grams of arsenic are in 100 grams of an insecticide that contains thirty two percent of the compound arsenic pentoxide?
The answer is 20,864 grams arsenic.
A 250.0 ml sample of tap water is found to contain 6.000 microgram of arsenic What is the concentration of arsenic in ppb?
To find the concentration of arsenic in ppb, we need to convert micrograms to grams and then calculate the concentration. First, convert 6.000 micrograms to grams by dividing by 1,000,000. This gives you 0.000006 grams of arsenic. Then, calculate the concentration by dividing the mass of arsenic by the volume of water (in liters) and multiplying by 1 billion to convert to ppb. The concentration of arsenic in the tap water sample is 24 ppb.
How many grams of potassium are in 12.5 g potassium dichromate?
potassium dichromate- K2Cr2O7 12.5 grams K2Cr2O7 *(1 mol K2Cr2O7/294 grams K2Cr2O7)= .0425 mols K2Cr2O7 There's two mols of K (potassium) for every 1 mol of K2Cr2O7 (Potassium Dichromate) so you multiply the K2Cr2O7 by two to get mols of K .0425 mols K2Cr2O7*(2 mols K/1 mol K2Cr2O7)=.085 mols K Multiply by the molar mass of K to get grams .85 mols K*(39 grams/1 mol K)= 3.32 grams potassium
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.
What is the density of arsenic?
The density of arsenic is approximately 5.73 grams per cubic centimeter.
What is the mass for one mole of arsenic?
Arsenic is 74.9 grams per mole, so 1.9 grams would be 1.9/74.9=about 0.025 moles.
How many gram are in 238 moles of arsenic?
To convert moles to grams, you need to know the molar mass of arsenic. Arsenic has a molar mass of approximately 74.92 g/mol. Therefore, to find the grams in 238 moles of arsenic, you would multiply the number of moles by the molar mass: 238 moles x 74.92 g/mol = 17,827.76 grams of arsenic.
How many grams of oxygen wil be in two moles of potassium dichromate?
In potassium dichromate (K2Cr2O7), there are 7 oxygen atoms per molecule. Therefore, two moles of K2Cr2O7 would contain 14 moles of oxygen atoms. Each mole of oxygen atoms has a molar mass of approximately 16 grams, so there would be 224 grams of oxygen in two moles of potassium dichromate.
What is the atomic mass of arsenic?
The atomic mass of arsenic is approximately 74.92 atomic mass units.
How many grams of potassium per day?
100 grams
If 25.0 grams of potassium chlorate decomposes, how many grams of potassium chloride will be produced What is the limiting reactant?
I Don't knows Sorry
What is the mass in grams of 2x1012 atoms of potassium?
To calculate the mass of 2x10^12 atoms of potassium, you first need to find the molar mass of potassium (39.10 g/mol). Then, divide the number of atoms by Avogadro's number to get the moles of potassium. Finally, multiply the moles by the molar mass to find the mass in grams, which in this case would be 0.01566 grams.
