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In the Olympics and other major athletic competitions, a GC-MS is used to screen athletes for their use of banned substances such as steroids. If an analytical method has been developed and the retention time for a particular anabolic steroid has been determined, how might you use this method to determine the possibility of the use of anabolic steroids by an athlete.
Assuming 100% dissociation, calculate the freezing point and boiling point of 1.83 m AgNO3(aq). Constants may be found here.
Find the mass of 2 moles of phosphorus trichloride.
Some insects produce antifreeze in cold weather; the antifreeze is glycerol. How much glycerol must an insect produce per gram of body fluid (taken to be water) to survive at -5.0C
Draw all of the Lewis structures of NO2+ which obey the octet rule and use this Lewis structure or these resonance structures to predict how many covalent bonds connect each oxygen atom in the real structure to the central N atom.
A sample of commercial concentrated hydrochloric acid is 11.8 M HCl and has a density of 1.190 g/mL. Calculate (a) the mass percentage, (b) molality and (c) mole fraction of HCl in concentrated hydrochloric acid.
1. Which of the following proceeds with syn addition? a. hydroboration of an alkene. b. hydrobromination of an alkene c. radical bromination of an alkane d. contra-markovnikof hydrobromination of an alkene with dialkyl peroxide initiation e. epoxi..
What volume of gas (H2 and O2 combined) at STP is released by decomposition of 93.405g of H2O? 2H2O (l) 2H2(g) + O2(g)
Find the conditional formation constant for Ca(EDTA)2- at pH 9.00, where log Kf is 10.65 and ?Y4- is 0.041.
Calculate the mass of ethylene glycol required to lower the freezing point of 200 mL of water/ice by 4.5 degrees celsius. The K(f) for H20 is 1.86 degrees celsius/m. Assume the density of water is 1.00 g/ml.
Hydrogen fluoride is a highly reactive gas. It has many industrial uses, but the most familiar property of HF is its ability to react with glass. As a result, HF is used to etch glass and frost the inner surfaces of light bulbs
Estimate the average spacing between water molecules in liquid water by making use of 2 pieces of information: (a) liquid water has a density of 1 g/cm^3
If 3.0 L of oxygen gas at 177°C is cooled at constant pressure until the volume becomes 1.50 L, then what is the final temperature
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