What volume of a concentrated solution
What volume of a concentrated {rm HCl} solution, which is 36.0% {rm HCl} by mass and has a density of 1.179 {rm g}/{rm mL}, should be used to make 5.20 L of an {rm HCl} solution with a {rm pH} of 1.5?
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A tank contains a mixture of 3.0 mol N2, 2.0 mol O2, and 1.0 mol CO2 at 25 degrees celsius and a total pressure of 10.0 atm. Calculate the partial pressure (in torr) of each gas in the mixture.
What weight of solid sodium formate must be added to 100 mL of 0.770 M formic acid to make a solution with a pH of 3.70? Ka for formic acid = 1.8 x 10-4 .
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 2.00×10-2 . The diluted solution is then placed in a spray bottle for application on the desired surfaces.
The reference value of E0 for Cu(II)/Cu(s) for the role that copper plays in this overall cell reaction, determine the value of the standard potential for the half-reaction Zn2+(aq) + 2e- -> Zn(s)
A single standrad number number 0.40 chain and sprocket system is designed with an input speed of 700 RPM and an input power of 6.325 HP
Which one of these five residues is most likely to be important for localizing a peripheral membrane protein to the membrane? Why?
A multimode fiber with a 50-μm core diameter is designed to limit the intermodal dispersion to 10 ns/km. What is the numerical aperture of this fiber?for the refractive index of the cladding.
You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH3COOH) and 0.20 M sodium acetate (CH3COONa). What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? [Ka = 1.8 × 10-5]
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