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If a sample of effuses through a tiny hole in 38 seconds. Explain what must be the molar mass of a gas that requires 64 to effuse under identical conditions?
what is the flow of the gulf stream in milliters per minute (b) what mass of water in the gulf stream flows past a given point in 24 hours? the density of seawater is 1.025 g/ml
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.160 M HClO(aq) with 0.160 M KOH(aq). The ionization constant for HClO 4.0*10-8.
Conjugate Pairs of Acids and Bases, What is the base if the acid is H2PO4- and the equation of the pair?
25.00 ml of a .250 M NH3 solution is titrated with .100 M HCl. What is the pH after 5.00 ml of HCl has been added? Kb of NH3 = 1.76*10^-5. (please show all calculations)
calculate the moles of calcium carbonate present in a 25.00 ml sample of standard assuming the standard is known to
List the letter that corresponds to the reagent from the reagent table you need to carry out the following synthesis in 5 steps or less. Heat may not appear on the reagent table with the reagent
If the decay of trihalomethane is first order,and 90% of the trihalomethanes in glass of tap water are gone after 3 hours, what is the decay rate constant
If an ideal gas is expanded reversibly, the heat absorbed qrev, can be expressed by the differential dqrev = Cv dT + P dV, Where Cv is a constant (called heat capacity at constant volume). Show that dqrev is an inexact differential.
A solution transmittance is 35% at 260 nm. What will the solution absorbance be if you dilute 25.0 ml
A piece of Ca metal is placed in a 1.00-L container with pure N2. The N2 is at a pressure of 1.12atm and a temperature of 26C. One hour later, the pressure has dropped to 0.924atm and the temperature has dropped to 24C. Compute the number of grams..
List the chemical names and number of atoms for each chemical for each of the following equations.
Determine the total number of valence electrons in each of the following: a) SBr2; b)NBr3; c) CH3OH; d) NH4^+.
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