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High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 2.04×10^8 Pa , what is its running pressure in torr?
Draw CI by placing atoms on the grid and connecting them with bonds. Do not identify the charge on each of these species. Include all lone pairs of electron.
How does a solution of two volatile components with strong solute-solvent attractions deviate from Raoult's law?
This exothermic reaction is catalyzed by MnO2(s). 2H2O2(aq) => 2 H2O(l) + O2(g) Which of the following will increase the rate of this reaction? 1. Raising the temperature 2. Increasing the surface area of MnO2(s)
200 mL sample of lake water is contaminated with a single monoprotic acid. titrating this sample with a .005 M NaOH required 7.3 mL of the NaOH solution to reach the endpoint. what is the concentration of H in the lake
A 295 mL stock solution contains 2.3 M Ca(CN)2. When 100 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
determine the errors if any with each galvanic cell set-up when the anode is on the left. select all that
Write the net ionic equations that occur in the following cells: a. Pb|Pb(NO3)2||AgNO3|Ag Pb + 2Ag+ --> Pb2+ + 2Ag b. Zn|ZnCl2||Pb(NO3)2|Pb Zn + Pb2+ --> Zn2+ + Pb c. Pb|Pb(NO3)2||NiCl2|Ni Pb + Ni2+ --> Pb2+ + Ni
A hiker caught in a thunderstorm loses heat when her clothing becomes wet. She is packing emergency rations that, if completely metabolized, will release 30 kJ of heat per gram of rations consumed.
Which of the following pairs has the member with the greater molar entropy listed first. All systems are at 25°C
What is the order of a reaction that has the following time and concentration data? Time concentration
Does a mutation causing a substitution of one base pair in a strand of DNA necessarily result in a new amino acid in the protein coded for that gene? Explain.
If the walls in a room are 955 square feet in area, and a gallon of paint covers 15 square yards, how many gallons of paint are needed for the room?
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