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A. if you prepare 250.0mL of pH=3.60 buffer that has a total buffer concentration of formic acid+ formate of 0.030 M, how many moles of each will you need to prepare the solution in question 1? question 1:Determine the number of moles of reagent in the following solutions: 1a)25.00 mL of 0.10 M acetic acid =0.0025 moles 1b) 5.55 mL of 0.092 M NaOH =0.5106 moles 1c)0.50 ml of 0.087 M HCL=0.435 moles B. discuss how to prepare the solution in question A starting from 0.100 M formic acid and 0.150 M sodium formate
If the molar enthalpy of water is 6.009 kJ/mol, how much energy is needed for 4.5 moles of ice to melt at STP?
At a particular temperature, K=2.0x10^-6 mol/L for the following reaction: 2CO2 (g) at equilibrium with 2CO(g) + O2 (g) If 2.1 mol CO2 is initially placed into a 4.2 L vessel, calculate the equilibrium concentrations for all of the species.
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water,
estimate the enthalpy change for the combustion of hydrogen gas in the presence of oxygen gas.
Add 28 ml of water and 1.0 ml of concentrated hydrochloric acid to the erlenmeyer flask.), but otherwise followed the above procedure. The student obtained _no product. Explain why?
If 32 mL of 6.8 M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid ?
what will the freezing points be of the resulting solution? kf(H2O)=1.86 C/m
What is the sodium ion concentration in the final solution when 50.0 mL of 0.125 M NaCl is mixed with 50.0 mL of 0.200 M Na2SO4?
During the saponification of ethyl tetradecanoate, would you expect the product to generate foam/froth when mixed
A certain solid metallic element has a density 7.87 g/cm3 and a molar mass of 55.85 g/mol. It crystallizes with a cubic unit cell, with an edge length of 286.7 pm. calculate the number of atoms per unit cell.
The mercury in a 0.7325 gram unknown sample was precipitated with excess par aperiodic acid, H6IO5, according to the following balanced chemical equation:
The equation for the reaction is 2 NH3 + 3 O2 + 2 CH4 ----> 2 HCN + 6 H2O, What is the percent yield of HCN?
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