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If it is considered that drinking 800 mL of water per day containing an arsenic concentration equal to the US EPA maximum contaminant level (MCL), delivers the dose to an adult that corresponds to a 1 in 10,000 excess risk of lung cancer. How much rice, containing 150 µg kg-1 of inorganic arsenic, would be safe to eat per day if only 500 mL of this water was drunk per day, and excess arsenic-free water was used to cook the rice in such a way that 50% of the inorganic arsenic was discarded?
In a manometer the mercury level at the open end of the tube is 215 mm higher than at the closed end of the tube. If the atmospheric pressure is 1 atm.
ammonia and oxygen react to form nitrogen and water 4nh3g 3o2g --gt 2n2g 6h2og part a how many grams of o2 are
SnI4 is soluble in acetone. What does this tell you about the ionic nature of this compound? Is the charge on the tin is actually +4? What was the effect of adding KI to the acetone solution?
Determine the fraction of N2 molecules traveling between 500 and 600 m/sec at room temperature
A 2.30 L sample of O2(g) was collected over a liquid at a total pressure of 785 torr and 25°C. When the O2(g) was dried (vapor of that liquid removed), the gas had a volume of 1.86 L at 25°C and 785 torr.
The solubility product for Zn(OH)2 is 3.0*10^-16. The formation constant for the hydroxo complex, Zn(OH)4^2- is 4.6*10^17. What is the minimum concentration of OH- required to dissolve 2.0×10-2 mol of Zn(OH)2 in a liter of solution
If a water electrolysis cell operates at a current of 8.1 A , how long will it take to generate 24.0 L of hydrogen gas at a pressure of 23.0 atm and a temperature of 25 C
research recently reported the first optical atomic trap. in this device beams of laser light replace the physical
Problem- When solutions of silver nitrate and calcium chloride are mixed, silver chloride precipitates out of solution according to the equation
Problem- What is the manimum amount of Fe2O3 that can be formed from the reaction of 12.0g of MgO and 10.0g of Fe? (Unbalanced)
draw the structures of methyl salicylate and say what evidence indicates that methyl salicylate was formed. draw the
An 8 g of SO3 was placed in an evacuated container where it decomposed at 600 degrees Celsius. At equilibrium, the total pressure and density were 1.8 ATM and 1.6 g/L. Calculate constant pressure.
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