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What is the pH of the solution that results from mixing 50.0 mL of 0.100 M NaOH with 100.0 mL of 0.100 M propanoic acid?
Picric acid has been used in the leather industry and din etching copper. However, its laboratory use has been restricted bycause it dehydrates on standing and can become shock sensitive. It has an acid dissociation constant of .42. What is the [H..
If the position of the car is known to within 5.0 feet at the time of the measurement, what is the uncertainty in the velocity of the car?
When a 8.37-g mixture of methane, CH4, and ethane, C2H6, is burned in oxygen at constant pressure, 445.8 kJ of heat is liberated. What is the percentage by mass of CH4 in the mixture
Give the number of electrons, Protons and neutrons in 24NA and give the electron configuration of the following A: A1 B: F- (- is at the top)
An uncovered cup (1/2 pint) of trichloroethane (d=1.325 g/mL) is kept in an 18-ft3 refrigerator at 39 F. What percentage (by mass) of trichloroethane is left as a liquid when equilibrium is established
using the equation for the line of best-fit below y1.544x 0.104 r20.9926determine the molar concentration of an
A second 25.0 mL aliquot of the original solution was mixed with 20.0 mL of 50 ppm quinine solution before dilution to 100 mL. The fluorescence intensity of this solution was 425. Calculate the percent quinine in the tablet.
Given the following equation, how many grams of PbCO3 will dissolve when 5.0 L of 1.50 M H+ is added to 6.00 g of PbCO3
For each reaction below, (a) identify the oxidation states of the atoms and (b) identify the oxidant, reductant, species oxidized, and species reduced. Also, think about this
In the temperature range from 40 K to 90 K, a certain amount of liquid has a temperature dependent heat capacity that is given by Cp = 18.5 J K?1 + T × 0.24 J K?2. Determine the enthalpy change resulting from heating this sample from 58.0 K to 72...
small helium-neon lasers emit 3.50 mjs of light at 634 nm. how many photons does such a laser emit in one
If a gas held at constant pressure had an initial volume of 5.00 L and the temperature changed from 35°C to 578 K what would be the final volume of this gas?
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