Formic acid to make a solution
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 .
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What is the minimum volume of 2.65mol/L HCl(aq) required to dissolve 16.1g Mn metal? The atomic weight of Mn is 54.94g/mol. The chemical equation is Mn(s) + 2HCl(aq) + H2(g).
A 5v belt drive system operates an input speed of 1250 RPM at the small sheave. The driving sheave has a pitch diameter of 6.000 in, and the driven sheave has a pitch diameter of 19.000 in.
How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated?
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.
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)
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?
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
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