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The Henderson-Hasselbalch equation is used to calculate the pH of a weak base, but not the pH of a weak acid.
consider the following reaction So2Cl2 + Cl2. A reaction mixture is being made containing an initial So2Cl2 of 2.3 x 10 -2. At equilibrium Cl2 = 1.0 x 10 -2. Calculate the value of the equilibrium c
The balloon ascends to altitude of 1600 meters and its volume increased to 6.00 L. Assuming that the temp of the gas didnt change during the ascent, calculate the atmospheric pressure at 1600 meters
How many grams of water H20 are in a sample that has 1.2 *10^(23) atoms of hydrogen
56.0 mL of 3.50 M sodium hydroxide is combined with 36.0 mL of 1.50 M magnesium chloride. What mass in grams of solid forms
Considering the reactions, Al + H2O, Al + NaOH, and Al + HCL, suggest a possible test to confirm the formation of ONE product in any one reaction.
A 0.625 mole sample of N2 gas at 1.50 atm and 45C occupies a volume of 10.9L. What volume in liters would each of the following molar sized samples of gas occupy at the same temperature and pressure
While preparing oxalate buffer technician by mistake added 0.1 M of CaC2O4 (pKsp=7.9) to 0.2 M solution of oxalic acid (pKa's 1.25; 4.26). What is the pH of this solution? Is it a buffer
We titrated a 0.1033 M NaOH solution into an unknown concentration of a weak acid (25.00 mL). It also says the unknown acid will have a concentration of about 0.1 M.
How much heat is required to warm 1.3kg of sand from 30 degree Celsius to 100 degree Celsius? (According to my notes- specific heat capacity of sand is .84 J/(g x Celsius)
If 1700 cal of heat is added to a system while the system does work equivalent to 3000 cal by expanding against the surrounding atmosphere, the value of E for the process is
Calculate the wavelength (m) associated with an electron that travels at 65% of the speed of light.
A sample of nitrous oxide gas, N2O in a nonrigid container at a temperature of 33C occupies a certain volume at a certain pressure. What will be its temperature in degree Celsuis in each of the foll
Draw a Kekule diagram for benzene - why is this representation of benzene not considered to be as good as drawing a hexagon with a circle in the centre? What does the circle represent?
For any gas, the voulme the gas occupies is directly proportional to the number of moles of gas at a given temperature and pressure. Air is 21.0% (by volume) O2 How many moles of oxygen are present
Suppose that 10.9 kJ of heat energy is removed from a granite sample at 25°C. If it has a mass of 625 g, what is its new temperature
Calculate Delta mixG, Delta mixS, and Delta mixH for mixing 150.0 g of benzene with 200.0 g of toluene at 20 degree C and 1 atm.
A solution is made by dissolving 21.7 g of HCl in enough water to make 822 mL of solution. Calculate the pH of the solution at 25 degrees Celsius
The Conversion of 2 pyruvate to 1 glucose by gluconeogenesis high energy phosphate bonds- a. Uses four. B. Uses six. C. Produce two D, produces one E, none of these.
How much Ca(OH)2 is required to remove 90% of the PO4 3- from 5.5x10^6 L of drinking water containing 25 mg/L of PO4 3-
Copper dissolved in nitric acid, producing copper (II) nitrate. After reaction with sodium hydroxide an heating, copper nitrate changed to copper(II) oxide. Calculate the percent yield of this proce
the nutritional calorie (Calorie) is equivalent to 1 kcal. One pound of body fat is equivalent to about 4.1 x 103 Calories. Express this energy equivalence in joules.
So could you please explain how you can estimate the order of increasing melting points for the following compounds. Why is the estimate rather inaccurate
Write the balanced (i) molecular equation, and (ii) net ionic equation which show what happens when aqueous solutions of barium nitrate and potassium sulfate are mixed together. Identify the spectat
In order to characterize this by product an alert student suggested trying to dissolve the by product in aqueous NAHCO3. The by product readily dissolved. Suggest a possible structure for this compo