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Problem- What is the pH of the solution which results from mixing 35 mL of 0.50M NH3 and 35 mL of 0.50M HCl? (Kb for NH3=1.8E-5)
State your answer by means of two significant figures.
A polluted water sample is suspected of being contaminated with one of the following; soap, ABS Surfactant, or LAS. In soft water, the sample has a very high BOD relative to its TOC.
meteorological balloon contains 375 L of helium at 29°C and 0.928 atm. If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is -40°C and the pressure is 0.031 a..
Compound A (C10H16O3) is insoluble in H2O, but soluble in bicarbonate solution. It yields a 2,4-dinitrophenylhydrazone derivative. Catalytic hydrogenation of Compound A
Discuss solutions, solvents and solutes in relationship to water. One our last topic, discuss hypotonic and hypertonic fluids and why these impact cells.
The value of Kc for the reaction below is 0.016. Under a set of equilibrium conditions, [HI] = 0.10 M and [H2] = [I2]. Calculate the concentration of I2 (M).
A student attempted to identify an unknown compound by the method used in this experiment. she found that when she heated a sample weighing 0.4826 g, the mass barely changed
Calculate the pH of each of the following solutions. (a) 0.100 M propanoic acid (HC3H5O2, Ka = 1.3 x 10^-5) (b) 0.100 M sodium propanoate (NaC3H5O2) (c) pure H2O (d) 0.100 M HC3H5O2 and 0.100 M NaC3H5O2
What steps do you think need to be taken to prepare the blood sample so that it will be amenable to this type of analysis?
a stock solution of perchloric acid is 70.5 by mass hclo4 and 29.5 by mass water. the density of the solution is 1.67
Suppose that 23.2 mL of 0.410 M sodium chloride is mixed to 23.2 mL of 0.339 M silver nitrate. Determine how many moles of silver chloride would precipitate?
When glucose, C6H12O6, is oxidized in our bodies energy is produced. In addition,CO2, is produced as a gas. The carbon dioxide gas eventualy finds its way from the cells to the lungs where it is expelled from the body
1.00 ml of a 3.45 times 10-4 m solution of oleic acid is diluted with 9.00 ml of petroleum ether forming solution a.
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