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An aqueous solution is 5.50 % by mass ammonia, NH3, and has a density of 0.975 g/mL. What is the mole fraction of ammonia in the solution?
One of those bands consists of radio waves with a wavelength near 20.m . Calculate the frequency of these radio waves. Be sure your answer has the correct number of significant digits.
calculate the heat absorbed or lost by the aqueous solution qaq in joules assuming that the specific heat capacity
What property of the atom did Moseley associate with the wavelength of X-rays emitted from an element in his experiments?
calculate the equilibrium pressure of N2O4(g) and NO2(g). (c) What percentage (by moles) of the original N2O4(g) is dissociated at the new equilibrium position (total pressure = 1.00 atm)?
Draw the structure of the product that is formed when but-1-yne is treated with the following reagents:1) disiamylborane; 2) H2O2, KOH; 3) LiAlH4. Disiamylborane = [(i-Pr)(CH3)CH]2BH, a hindered derivative of BH3.
A 0.100 M solution of a weak acid, HX, has a pH of 2.110. What is the value of Ka for HX?
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 8.00 g of sodium carbonate is mixed with one containing 4.75 g of silver nitrate.
Describe a way to differentiate between the two using a solution of Na2CO3 and write the correct balanced equation
Predict whether the following reactions will be spontaneous in acidic solution under standard conditions.
How many milliliters of 1.50 M H2SO4 are needed to neutralize 50.0 g of NaOH?
Calculate the change in temperature for 1.30 g of CaCl2 dissolved in 25.0mL of H2O. Assume that the calorimeter absorbs no heat. (ie C cal=0)
Explain why bromination of cyclohexene produce trans 1,2-dibromocyclohexane
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