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Question- Given a 100 mL solution that is 0.3M in nitrous acid and 0.3M in sodium nitrite. The Ka of HNO2 is 4.0 x 10^-4.What is the pH after 5 mL of 0.4 M NaOH is added to the solution?
I want to know how this is done please show all steps in detail
What is the percent by mass of oxygen in a gaseous mixture whose molar composition is 0.500% CO2 and 99.500% air? The composition of air is 21% mole O2
How many atoms occupy 23 moles of oxygen gas? What conditions must be specified first to determine this?
Problem- Draw stereochemical projections for the products of bromine addition to maleic acid and fumaric acid (cis and trans HOOCCH=CHCOOH, respectively) assuming that bromine adds to these compounds the same way it does to cinnamic acid.
1. calculate the numbers of moles of 2-butanol that needed to dissolved in ethenol125gms just to form 12 m 2 butanol
Write mathematical equation that show how you will calculate the detected activity from the count rate the sample KCl
Eliminate the parameter to determine a Cartesian equation for the curve in y= f(x) form. given the parametric equations and any restrictions on the parameter t, identify the bounds for the values of x and y. State the range of values using interval..
A gaseous compound containing carbon as well as hydrogen was analyzed and found to consist of 83.65% carbon by mass. At 139C and 1.00 atm, the density of this compound is 2.55g/L. Define what is the molar mass
The company is interested in the drug's value because only the dissociated form of the chemical is active in preventing cholesterol buildup in arteries.
We add R12 to the tank until the final mass of R12 inside the tank is 80 kg. If the temperature remains constant, what is the volume occupied by the liquid in the final state. How much mass of R12 was added to the tank
Presume that a lemon contains 1.00 of citric acid. Explain how many milliliters of 0.115M NaOH will be required to titrate the juice from the lemon
find the density of a substance with a mass of 51.2g and a volume of
The solution is filtered, and a 60.00mL sample titrated with HCl requires 11.13mL of 9.78×10?2 M HCl to reach the end point. Calculate Ksp for Ca(OH)2
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