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A solution was prepared by mixing 43.00 mL of 0.190 M HNO3 and 108.00 mL of 0.150 M HNO3. Calculate the molarity of the final solution of nitric acid.
If 85 J of heat are added to a pure gold coin with a mass of 15g , What is its temperature change? Specific heat capacity of gold is 0.128.
Explain the steriochemisty of gyceraldehyde and glycerol, give reasons for absence of anomeric forms in sucrose
Determine which H atom transition (ninitial,nfinal) was responsible for the emission of a photon with a frequency of 6.91 x 1014 Hz.
A foundry worker throws a hot, freshly cast piece of iron into 10 liters (10 kg) of water to cool off. The initial temperature of the water is 25 degree celcius and the initial temperature of the iron is 100 degree celsius.
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.700 it M solution of ammonia, NH_3, to prepare a buffer solution that has a pH of 8.62? K_b for ammonia is 1.8 * 10^{-5}.
Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3 NO2(g) + H2O(l) -→ 2 HNO3(l) + NO(g) If 927 L of NO2 gas react with water, what volume of NO gas will be produced? Assume the gases are measured under the same c..
A graduated cylinder contains 10.0 of water. What is the new water level after 36.0 of silver metal is submerged in the water.
The concentrations of lead in blood samples are often reported in units of micromoles of lead per liter of blood. Calculate the value of the concentration in these units of a blood sample containing 45 ppb lead.
The rate constant k for a first order reaction is 1.36 * 10 -3 s -1 at 90 degrees Celcius and the activation energy is 78.4 kJ/mol. What is the rate constant for this reaction at 50 degrees Celcius?
Calculate the equilibrium concentrations if the initial concentrations are 2.31M N2 and 0.54M O2. (This N2/O2 concentration ratio is the ratio found in air.)
Calculate the major product in the Williamson ether synthesis between 1-bromopentane and sodium 1-phenylethoxide. correct stereochemistry of the product must be shown in its with four bonds - with H - at the chirality center.
How much energy (in calories) is needed to heat 17cm^3 of fat from room temperature (25 C) to its melting point (35 C)?
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