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Question - 1-Calculate the pH of a solution in which [H+] = 1.25 x 10-12 M. [1] Report your answer to 3 SF only!
2-Using the average atomic mass of lithium, calculate the mass, in amu, for a sample of 2.78 x 1025atoms of Li. [1] amu. Enter your answer using scientific notation.
3- Given the following balanced equation: 2 H2+ O2? 2H2O a) how many moles of water would form if 14.0 g of H2 reacted? moles b) how many grams of water would form if 14.0 g of O2 reacted? grams Comment
4-In a balanced chemical equation, the [1] indicate the molar relationships between any two reactants, any two products, or between any reactant and product
Thank you! My final is tomorrow and I am in desperate need!
The vapor pressure of water at 25 degrees C is 23.8 torr. Determine the mass of glucose (MW=180.0 g/mol) needed to add to 500.0 g of water to change the vapor pressure to 23.1 torr.
The strength of an acid and therefore the stability of its conjugate base increases with decreasing pKa. Utilize free energy to quantify how much more stable chloroacetate is than acetate at 298 K.
If 10.2 g of ammonium carbamate is introduced into a 0.500 L container, what is the total pressure inside the container at equilibrium
If the freezing point depression of water is -1.86 degrees C/M, what would be the freezing point of this solution
Consider these aqueous solutions: 0.20m NH4Cl, 0.20m CaCl2, 0.25m NaCl, and 0.30m sugar. Assume these are all ideal solutions. Which solution has the lowest vapor pressure
if a raindrop weighs 65 mg on average and 5.1x10^5 raindrops fall on a lawn every minute what mass in kg of rain falls in 1.5 hours
Problem- Top fuel dragsters and funny cars burn nitromethane as fuel according to the following balanced combustion equation- 2CH3NO2(l)+3/2O2(g)?2CO2(g)+3H2O(l)+N2(g)
The reaction is first order in Co(NH3)5Br2+ the rate constant at 25 ?C is 6.3×10?6 s?1 and the initial concentration of Co(NH3)5Br2+ is 0.100 M.
Draw the experimental outcome for a titration analysis involving a titrant and titrand (the pH vs. volume titrant added response curve), wherein the titrand is the weak, monoprotic base aniline (0.05000 F, 0.10000 L), and the titrant is a strong m..
Compute the concentration (in molarity) of a NaOH solution if 35.0 mL of the solution are needed to neutralize 12.0 mL of a 0.312MHCl solution
Write net Bronsted equations and determine the equilibrium constants for the acid-base reactions that occur when aqueous solutions of the following are mixed.
the threshold wavelength for potassium metal is 564 nm. what is its work? what is the kinetic energy of electrons ejected if radiation of wavelength 410 nm is used?
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