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The unknown sample of tap water as analyzed 5 hours after above calibration data was collected. E measured was 341.0 mV. Determine the concentration of F-in the tap water sample?
Describe shape of titration curve obtained for the analysis. What does curve tell you about ability of analyte, titrant and product to absorb light at wavelength used for this titration?
The following cell potentials when using platinum indicator electrode and silver-silver chloride reference electrode. Use Gran plot to find out concentration of Fe2+in this sample.
Unknown solution contains only two absorbing species thymol blue and methylthymol blue. Compute concentration of thymol blue and ethylthymol blue in unknown sample.
Then instead a phosphorolysis, ALL glucose was released from glycogen by hydrolysis. How does the number compare to the 30 ATP?
Write the balanced equation, then find out how many grams of sulfuric acid can be produced if 916.0 grams of water react.
Compute theoretical and percent yields if 934 grams of sucrose (C12H22O11) react and 493 grams of ethanol (C2H5OH) are really produced.
Write balanced equation and find out how many moles of nitrogen are required to react with 8.37 moles of hydrogen.
When this enters limestone (CaCO3), it dissolves limestone, sometimes producing caves. It 804 kg of calcium hydrogen carbonate is formed, how many kg of limestone were dissolved?
The balloon is presently filled with air at the volume of 8.0L. You heat balloon to double its original temperature in Celsius. Will the balloon pop?
Consider the gas at 1.00 atm in 5.00 L container at 20OC. What pressure does gas exert when transferred to volume of 3.53 L at 43OC?
A sample of helium gas occupies 11.6L at 23OC and 0.956 atm. What volume will it occupy at 40oC and same pressure?
How many liters of NO2, at STP, are formed? If 100.0 g of ammonium nitrate decomposes at 450 oC, how many liters of gaseous products would be produced?
Determine the original pressure of gas, in atmospheres, if this action decreases sample pressure to 3.00 atm?
A sample of nitrogen dioxide gas has volume of 1.50 L at 23 oC. What volume, in L, will gas occupy at 123 oC, if pressure is held constant?
In a certain experiment, 137 g of Al2O3 are produced from 75.6 g of Al and 124 g of O2. What is the theoretical yield of Al2O3? What is the percent yield of Al2O3?
For each of the given combinations of reactants, decide which is limiting reactant. 1.25 moles of N2 and 3.65 moles of H2.
Sample of potassium hydrogen oxalate, KHC2O4, weighing 0.832 g, was dissolved in water and titrated with 25.80 mL of NaOH solution. Compute molarity of NaOH solution.
What would be molarity of the solution made by dissolving 4.50 g of KCl to make 250.0 mL solution? How many milliliters of 0.500 M solution prepared by dissolving 7.00 g of NaCl in water?
Dr. Brown has radioisotope source comprising 1.2 x 106 (also written as 1.2E+06) atoms of Plutonium-238 in 1985, how many atoms will remain in 352 years?
How could bomb have been detonated? What actions must the exposed person take during immediate aftermath of explosion?
Why the active on-duty firefighters likely to experience adverse health effects from inhaling 300 ppm of carbon monoxide faster than nonactive off-duty firefighters.
Given the following heat of formation values, compute heat of reaction for: If DG° (in kJ/mol) for: C2H6(g) = -32.9, O2(g) = 0, CO2(g) = -394.4, and H2O(l) = -237.2; compute DG° for reaction.
If lighter contains 2.5 mL of liquid butane (den = 0.8 g/cm3), how much potential energy does lighter contain according to combustion of butane.
Synthesis of ammonia via Haber reaction follows balanced equation: How much heat is created from synthesis of 7.38 metric tons (1 metric ton = 1000 kg) of ammonia?