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Fluoride ion is poisonous in relatively low amounts: 0.2 g of F - per 70 kg body weight can cause death. Nevertheless, in order to prevent tooth decay, F - ions are added to drinking water at a concentration of 1 mg of F - ion per L of water. How many kilograms of sodium fluoride would be needed to treat a 7.11 107 gal reservoir?
Dehydration of 2-bromobutane in the prescence of a strong base proceeds via which of the following mechanistic pathways
let's pretend a certain sterling silver ring has a mass of 31.25g. silver has 93%. determine the mass of silver found in the ring.
In an adiabatic compression if one mole of an ideal gas with a Cv=5R/2, the temperature rises from 293 K to 325 K. Calculate the heat, work, change in enthalpy and change in internal energy
A 1.29 g sample of stearic acid (C18H32O2), a common constituent of fats, is burned in a bomb calorimeter
A gas occupies a volume of 925mL at 30 degrees celcius and 1.2atm. What volume will it occupy at STP?
Seawater has a concentration of 400 ppm Ca. You wil first prepare a 10-fold diluted Buzzards Bay seawater solution (40.0 ppm Ca). Pipet 10.00 mL of Buzzards bay seawater into a 100.0 mL volumetric flask and fill to mark with deionized water
guesstimate the extent of the dipole moment of h2o in debye units treating h2o as three point charges. suppose the o-h
Analysis of water in a sediment sample at equilibrium at ph 7.00 showed [so42-] = 2.00 x 10^-5 m and a partial pressure of h2s of 0.100 atm. show with appropriate calculations if methane, ch4, would be expected in the sediment.
A gas mixture of N2 and CO2 has a total pressure of 8.00 atm and contains 12.5 mol of gas. If the partial pressure of N2 is 3.69 atm, how many moles of CO2 are in the mixture
Which of the following could be the results of the decomposition of the other sample, being consistent with the law of constant composition (also called the law of definite proportions or law of definite composition)?
Determine the number of moles of O2 produced by the decomposition of 213 g of NaClO3.
A sample of an ideal gas at 1.00 atm and a volume of 1.89 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume.
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