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How many milliliters of 69 percent (w/w) HNO3 must you dilute with water to prepare a total volume of 100.0 mL of 7.00 M HNO3? The specific gravity of the concentrated solution is 1.42.
a bottle of wine contains 14.5 ethanol by volume. the density of ethanol c2h5oh is 0.789 gcm3. calculate the
Determine end value of n in a hydrogen atom if the electron starts in n=4 and atom emits wavelength of 486nm.
For 300.0 mL of a buffer solution that is 0.325M in CH3CH2NH2 and 0.300 in CH3CH2NH3CL, calculate the initial and the final after adding 0.005 mol of NaOH.
1.list all the strong aqueous acids. what is the difference between a strong acid and a weak acid? how do the
Explain Oxidation of Elements and Their Reactions, Which element is oxidized and which element is reduced in each of the following reactions?
which of the following reduces the solubility of calcium fluoride?a presence of uncommon ions such as na and cl-b
A sample of gas is stored in 716 mL tank at 205 kPa and 300 K. The gas is transferred to a different tank with a volume of 925 mL and 325 K. What is the pressure of the gas in the second tank?
an archaeological sample contains 0.743g of lead -206 and 2.145g of uranium - 238. Assume that all the lead now present in the rock came from the radioactive decay of the uranium and that no appreciable amounts of other radioactive nuclides are pr..
find delta H for the solution of 1g NaOH in water d) find delta H for the solution of 1 mole NaOH in water e) Given the following heats of formation
A water solution containing 2.00 g of an unknown molecular substance dissolved in 10.00 g of water has a freezing point of 4.0°C. a. Calculate the molality of the solution.
If the energy needed to raise the temperature of the water to 29.0 degrees Celsius is obtained from the combustion of methane (CH4), what volume of methane, measured at STP, must be burned
Methanol, ethanol, and n-propanol are three common alcohols. When 1.00 g of each of these alcohols is burned in air, heat is liberated. Calculate the heats of combustion of these alcohols in kJ/mol.
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