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If you eat a 48 g serving rice every fourth day and you weigh 75 kg, what is your dose of inorganic arsenic (in µg per kg body weight per day) if the rice contains 386 µg kg-1of total arsenic, 45% of which is inorganic arsenic.
When 4-methylcyclohexene reacts with water and acid, a mixture of 4-methylcyclohexanol and 3-methylcyclohexanol is formed. (a) write the reaction
The pH of a 2.1 M solution of a weak acid, HA, at 298K is 1.85. What percent of the acid has dissociated
For equal moles of CaCl2 and Fe(NO3)3 dissolved in the same volume of distilled water, how do you expect the conductivities of each solution to compare? Explain your reasoning.
considering the given reduction potentialsasnbsp ag? aq eoline 1 electron ag s edeg 0.800 voltsnisup2? aq 2 eoline 2
A typical frostless refrigerator uses 655 kWh of energy per year in the form of electricity. Suppose that all of this electricity is generated at a power plant that burns coal containing 3.0% sulfur by mass
Gas at 15°C and 105 kPa is flowing through an irregular duct. To determine the rate of flow of the gas, CO2 from a tank is passed into the gas stream. The gas analyzes 1.2% CO2 by volume before and 3.4% CO2 by volume after the addition
question it takes 46.0 j to raise the temperature of an 12.5g piece of unknown substance from 13.0 oc to 26.2 oc. what
There are two bulbs connected in system by valves. One bulb is 1.00L with a gas pressure of 645 mm Hg and the other is 0.500L with a pressure of 438 mm Hg. Explain what is the pressure (atm) of the system when both valves are opened, presuming t..
Draw the lewis structure of BeF2. I think its suppose to be an incomplete octet but why becuaseif you place two double bonds Be is complete.
The boiling point of ethanol is 78.3 C. Calculate the D S for vaporization of 0.5 mol of ethanol.
The formaldehyde content of a pesticide preparation was determined by weighing .3124g of liquid sample into a flask containing 50ml of .0996M NaOH and 50mL of 3%H2O2. On heating, the following reaction took place
Calculate the millimoles of copper (II) sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.
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