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Write a balanced net ionic equation for the reaction of each of the following aqueous solutions with H+ ions. Sodium fluoride
One of the many isotopes used in cancer treatment is gold 19879Au, with a half-life of 2.70 days. Determine the mass of this isotope
If a triacylglycerol in peanut oil that contains one palmitic acid, one oleic acid, and one linoleic acid is completely hydrogenated, what is the product
Identify each of the following as saturated, monounsaturated, polyunsaturated, omega-3, or omega-6 fatty acids.
The solid KIO3 is diluted shy of the 100mL mark in the volumetric flask. does this technique error result in a reported molar concentration of KIO3 that is too high or too low
The initial concentration of lead(II)nitrate is 0.250M. and we used 1.00 ml. the lead(II)nitrate was titrated with 7.96 ml of 0.0500M of potassium iodide.
The molecular weight of X is 65.0 g/mol. The heat required to melt one mole of the solid phase is 20.0 kJ, the heat required to sublime one mole of the solid phase is 40.0 kJ, and the heat required
Calculate the pH of a solution resulting from the titration of 50mL of 0.033M HBr with 25 mL of 0.117M KOH. Give your answer to two decimal places.
A convex mirror has a focal length of -48.0 cm. A 12.0-cm-tall object is located 36.0 cm in front of this mirror. Using a ray diagram drawn to scale, determine the location of the image. Note that the
If a laser operated on the n=5 to n=2 transition of a H atom, what wavelength in nm photon would be emitted? (E2= -82 kJ/mol, E1= -328 kJ/mol)
For a convex mirror, when the object is 24.4 cm in front of the mirror the image is 15.8 cm behind the mirror. determine the distance of the image behind the mirror
what is the energy of the light emitted in joules when an electron falls from the n=4 to the n=2 orbit in the hydrogen atom ? (E2= -328 kJ/mol , E1= -82 kJ/mol)
Find the value of Ka, for the conjugate acid of the following bases: a) methylamine, a solvent analogous to ammonia with a strong fish odor; Kb=5.0x10-4 b) morphine, an extremely powerful opiate;Kb=
Calculate the pH of a buffer solution made by mixing 46.8 g of sodium acetate into 1 L of a 0.1 M solution of acetic acid. Give the pH to two decimal places.
Calculate the pH of a buffer solution made by mixing 49 ml of a 0.07 M ammonia solution with 52 ml of a 0.10 M ammonium nitrate solution. Give the pH to two decimal places.
Selenious Acid, H2Se)3, is primarily used to chemically darken copper, brass, and bronze. It is a diprotic acid with the following Ka values: Ka1 =2.7x10-3 and Ka2= 5.0x10-8.what is the pH of a 2.89
Given the following data regarding nickel. What is the theoretical density of the metal
A 7650kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3. find the buoyant force on the iceberg
Al is added to Si to give an extrinsic semiconductor with a conductivity of 2 ( cm)^-1 How many Al atoms are added per cm^3? How many Si atoms are there for each AI atom
Suppose the pressure in a container of soda is 15 atm. At 25oC, the Henry's Law constant for CO2 in water is 1.61 x 103 atm. Estimate the mole fraction of dissolved carbon dioxide in the soda
The vapor pressure of benzene is 100 mm Hg at 26.1 C and 400 mm Hg at 60.6 C. Estimate the heat of vaporazitaion of benzene in this temperature range
Imagine two Einstein solids in thermal contact. A has 300 atoms and B has 200 atoms, and qtotal = 100, what is the equilibrium macrostate
An automobile traveling at 40.0 km/h has tires of 50.0 cm diameter. How far does the car move during the braking
A thin rod of length 0.75 m and mass 0.35 kg is suspended freely from one end. It is pulled to one side and then allowed to swing like a pendulum, Find the rod's kinetic energy at its lowest positio