What was the molarity of the sodium carbonate solution
A 447 cm3 volume of Na2CO3 solution was warmed with an excess of sulfuric acid until all action ceased. A 5.0 L volume of dry CO2 gas measured at STP was given off and collected. What was the molarity of the sodium carbonate solution?
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Like the reaction of aldehydes with water to give aldehydehydrates, ketones react with water to give ketone hydrates. Why are ketones not oxidized further even in the presence of water?
10 mL aliquots of natural water were pipetted into 50 mL flasks. Exactly 0.0, 0.5. 10.0, 15.0, and 20.0 mL of a standard solution containing 11.1 ppm of Fe were added to each, followed by an excess of thiocyanate ion to give the red complex Fe(SCN
Calculate the atomic packing factor for a body centered cubic (b.c.c.) system. Show all the steps. (b) Materials A and B both forms face centered cubic (f.c.c.) structures at room temperature.
A voltaic cell with Ni/Ni2+ and Co/Co2+ half-cells has the following initial concentrations: [Ni2+]=0.80 M; [Co2+]=0.20 M. What is the initial E cell? What is [Ni2+] when Ecell reaches 0.03 V? What are the equilibrium concentrations of the ions?
Consider the combustion of ethylene, C2H4 (g) + 3 O2 (g) ------> 2 CO2 (g) + 2 H2O (g). If the concentration of C2H4 is decreasing at the rate of 0.025 M/s, what are the rates of change in the concentrations of CO2 and H2O?
Liquid Hexane, C6H14, undergoes combustion. If 93.1 g of hexane combusts in the presence of excess oxygen, how many g of carbon dioxide will be produced?
Luminol has a molecular weight of 177 g/mol. The forensic technician at a crime scene has just prepared a luminol stock solution by adding 10.0 g of luminol into a total volume of 75.0 mL of H20.
The steam enters at 25 bar with a velocity of 61 m/s and exits as saturated vapor at 0.06 bar with a velocity of 130 m/s. Neglecting potential energy effects, determine the inlet temperature, in C?
Daniel weighing 201lb decides to climb a mountain weighing5010m. He took nutrition bars with him such that each 100-g barcontains 10g of fat, 40 g of protein and 50g of carbohydrates.
A river had a depth of 1 m, a width of 40m, and a flow of 20 m^3/sec. Assume that the wind speed at 10 m elevation is 4 m/sec. What is the overall mass-transfer coefficient for oxygen from the atmosphere to the river?
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