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You are given a recipe for a buffer that contains 5% (w/v) MgSO4.7H2O. However, you only have MgSO4 anhydrous available to you. How much MgSO4 anhydrous do you need to make 0.5L of the buffer with the same molar concentration as in the recipe? Show your calculations
For a solution having 1.00 x 10-3 eq/L total alkalinity contributions from HCO3(-), CO3(2-), and OH(-) at H(+) = 4.69 x 10^-11, explain what is the percentage contribution to alkalinity from CO3(2-)
the average osmotic pressure of human blood versus water is 7.60atm at a temperature of t310k. calculate the total
The mercury in a 0.7325 gram unknown sample was precipitated with excess par aperiodic acid, H6IO5, according to the following balanced chemical equation:
list the names and chemical formulas for two allotropes of oxygen, three allotropes of phosphorus, and four allotropes of carbon
Two weights are tied to the ends of a wire as well as the wire is placed on a block of ice with the weights hanging down over the sides. Ultimately the wire passes through the block, however the block remains intact.
Calculate the freezing point and boiling point of the solution. Kf benzene = 5.12 C/m Kb = 2.53 C/m
What is the pH of a solution resulting from the titration of 50 mL of 0.050 M acetic acid solution, CH3COOH, with 50 mL of 0.050 M NaOH solution. Calculate your answer to two decimal places.
Given the reaction 4Al(s) + 3O2(g) --> 2Al2O3(s), what is the minimum number of moles of oxygen gas required to produce 1.00 mole of aluminum oxide?
The Debye-huckel limiting law is more reliable for 1:1 electrolytes than for 2:2 electrolytes
The molecules methane (CH4) as well as ammonia (NH3) both has four regions of high electron density around their central atoms, and yet these two molecules have different molecular geometries. Explain why are their molecule geometries different
raise the temperature of an 12.5g piece of unknown substance from 13.0 oC to 26.2 oC. What is the specific heat for the substance?
Which of the following equations represents the proper net ionic equation for the complete neutralization reaction between the weak acid HClO2 (aq) and the strong base KOH (aq)
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