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A 4.53g sample of a solid containing Ni is dissolved in 20.0mL water. A 5.00mL aliquot of this solution is diluted to 100.0mL as well as analyzed in the lab. Explain the solution was determined to contain 6.83ppm Ni.
Find out the molarity of Ni in the 20.0mL solution.
Find out the mass in grams of Ni in the original sample.
Find out the weight percent of Ni in the sample.
C7H6O3 + CH3OH --> C8H8O3 + H2O In an experiment 1.50 g of salicylic acid (C7H6O3) is reacted with 11.20 g of methanol (CH3OH).
Find the pH solution & Hydronium ion concentration and What is the pH of a solution of 0.17 M acid and 0.81 M of its conjugate base if the pKa = 8.62?
When 25.0 g of ethanol vapor condenses, 23.6 kJ of heat is released. How much heat is required in kJ to vaporize 262 g of ethanol?
Vanadium crystallizes in a body centered cubic lattice (the V atoms occupy only the lattice points). How many V atoms are present in a unit cell?
the hydrolysis of acetylcholine is catalyzed by the enzyme acetylcholinesterase which has a turnover rate of 25000 s-1.
Describe the procedure you will use to determine those cation/anion pairs that produce precipitates. Make sure you include all equipment and amounts of materials you expect to use
Consider a process carried out on 1.00 mol of a monatomic ideal gas by the following pathway from state A to state B
Rank a series of molecules by expected solubility in water based on polarity and hydrogen bonding. Some slightly soluble compounds are included in this exercise.
What mass (in grams) of solid sucrose (C12H22O11) would need to be added to 2000 grams of water to make an ideal solution with a boiling point of 102.9°C? (Kb for water is 0.512°C/m)
If 55.0 ml of ethanol (density=0.789 g/ml) initially at 8.0 C is mixed with 55.0 ml of water (density= 1.0 g/ml)ninitially at 28.6 C in an insulated beaker and assuming no heat is lost, what is the final temperature of the mixture
The remains of an old campare are unearthed and it is found that there is only 80% as much radioactive carbon-14 in the charcoal samples from the campare as there is in modern living trees
The complete combustion of pentane yields carbon dioxide and water. When the equation C5H12(l) + O2(g) ? CO2(g) + H2O(l) is balanced, the ratio of the coefficient of CO2 to the coefficient of O2 is
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