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We can measure the concentration of HCl solution by reaction with pure sodium carbonate: 2H+ + Na2CO3 --> 2Na+ + H2O + CO2. Complete reaction with 0.967 4 (+/- 0.000 9) g of Na2CO3 (FM 105.988 4 (+/- 0.000 7)) required 27.35 (+/- 0.04) mL of HCl. Find the molarity of the HCl and its absolute uncertainty.
describe how these limestone objects are corroded by the sulfuric acid in polluted air. What chemical reaction is involved here?
Calculate the mass of the protein that must be dissolved in 40 mL of water to obtain this concentration
what would be a procedure to go by for the reaction of 2 methyl 2 octene with Hbr and what solvents could be used
If the solution has a specific heat capacity of 3.95 J/(g K) and a density of 1.015 g/ml, what is the DeltaH for the following reaction in kJ?
In N2O, nitrogen is the central atom and the oxygen atom is terminal. In OF2, however, oxygen is the central atom.Use formal charges to explain why.
Equal quantities of 0.010M solutions of an acid HA and a base B are mixed. The pH of the resulting solution is 9.2. Write the equilibrium equation for the reaction between HA and B.
Make a rough sketch showing how the following properties of a baseball depend on time, from the moment it is hit high into left field to the time it is caught by the outfielder. You may neglect the effects of friction!
at 350 degrees celcius and 200 atm the % yield is 50%. Calculate how many grams of N gas are required to produce 25.000g Ammonia
Understand how the ability to form hydrogen bonds gives water cohesiveness and how this property is exploited by living things.
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
Substances A, B, C can all ac as oxidizing agents. In solution, A is green, B is red, and C is yellow. In the reactions in which they participate, they are reduced to A-, B-, and C- ions,
A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula
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