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The MCL(maximum contaminant level) for nitrate in drinkingwater is 10ppm (weight/weight). A test conducted in 2008 indicatedwater from the Dublin Road Water Plant had a nitrate concentrationof7.6*10-5M.a. What is this value in units of ppm (weight/weight)? Did thewater from the Dublin Road Water Plant contain an acceptable level of nitrates?b. Convert a nitrate concentration of 10 ppm (weight/weight)to molarity.
The frequency doubled output of a Nd3+ YAG laser has a wavelength of 532nm. If each pulse of light has a total energy of 0.550J and the repetition rate of the laser is 30Hz
based on the law of multiple proportions how many grams of hydrogen would you expect 2.49 of nitrogen to combine with
how many cans of Mountain Lightning would an individual have to drink to die from a tartrazine overdose If the LD50 of tartrazine in humans is supposed to be 12,750 mg/kg (as it is for mice) and the average human weighs 70 kilograms,?
When 4 g sample of NH4NO3(s) was dissolved in 60 g of water in a coffee-cup calorimeter, the temperature drops from 296 to 291 K.
question calculate the ph of a solution prepared by dissolving 200.0 mg of baoh2 171.3 gmol to 100.0 ml of solution.
The value of ?G°310 for the reaction at 37°C (normal human body temperature) is -33 kJ mol-1. Calculate the value of the equilibrium constant for the reaction at that temperature.
between 2007 and 2009 the u.s. economy experienced a severe recession. in an effort to stimulate the economy the
question an aqueous dextrose solution having a density of 1.04 gcm3 freezes at -1.15degc. find the osmotic pressure of
in a sodium borohydride reduction experiment explain any color changes observed when sodium borohydride was added.
what is the theoretical yield of PbI2 in grams? g) if the student obtained .583 grams of PbI2 product after collecting it by filtration and drying it, what was the percent yield of PbI2 obtained?
Which of the following reagents could be used to separate the two anions in a solution of sodium sulfide and sodium acetate. Select all that apply.
A 5 kg aluminum block sits in your lab, which is at 21 C. You wish to increase the temperature of the block to 50 C. How much heat in [J] must be supplied
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