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What partial pressure of oxygen is a scuba diver breathing if the total pressure is 6.3 atm and 20 percent of the air is oxygen?
the density of a liquid sulfur compound is 1.14 gml1. this compound contains 23.7 sulfur. how many milliliters of the
how many grams of sodium lactate should be added to 1.00 l of 0.150 lactic acid or to form a buffer solution with
One mole of a van der Waal's gas is compressed isothermally and reversibly from 20 dm^3 to 1 dm^3. a=.556 Pa mol^6/m; b=.064 dm^3/mol. Calculate w,q, and delta_U.
what is the formula for the dissolution of sodium propionate in
Upon opening the stopcocks what is the partial pressure of each gas and the total pressure inside the apparatus. Assume that the volume of the stopcocks and the tubing connecting the bulbs is negligible.
The concentration of the alkane C20H42 (FM 282.55) in a particular sample of rainwater is 0.2 ppb. Assume that the density of rainwater is close to 1.00 g/mL
Thin-layer chromatography - Explain how you should apply a spot of compound to the TLC plate in order to get the best results. How do you know if you have overloaded your TLC plate? Why is this a problem
The nitrogen-nitrogen bond lengths in N2H4, N2F2, and N2 are 1.45, 1.25, and 1.10 A, respectively. Using the Lewis Structures, how can this trend be explained? No formal charges needed?
Calculate the molality of a solution containing 292g glucose(C6H12O6) dissolved in 1.91L of water.
Estimate the pH at the equivalence point of an HOAc solution if 25.5 mL of this solution required 37.5 mL of 0.175 M NaOH to reach the equivalence point (Ka = 1.8 x 10-5).
Which of the following options give the correct relationships between the decimal prefixes? Select all that apply. Pay close attention to the sign and magnitude of exponent. -1 mL= 1x10^3 microliters -1GHz=1x10^6 Hz -10^3 kg=1 g -10^9 nm=1m -10ps=..
small spheres of equal mass are made of lead density 11.3 rm grm cm3 silver 10.5 rm grm cm3 and aluminum 2.70 rm grm
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