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Light of wavelength 640nm falls on two slits and produces an interference pattern in which the third-order bright red fringe is 48mm, obtain the separation of the two slits
Draw the structure(s) of the carboxylic acids with the molecular formula C5H10O2 that contain a branched carbon chain.
What is the rate of the reaction if the concentration of CH3Br is doubled? (b) What is the rate of the reaction if the concentration of NaOH is halved
An aluminum-alloy rod has a length of 10.009 cm at 16.200°C and a length of 10.021 cm at the boiling point of water. compute the length of the rod at the freezing point of water
Briefly explain why it is important to allow a hot sample to cool to room temperature before you determine its mass.
A barge is 15.0 m wide and 75.0 m long and has vertical sides. The bottom of the hull is 1.20 m below the water surface. What is the weight of the barge
The mass of an atom of beryllium is 1.5 x 10^-26 kg. How many beryllium atoms are present in beryllium film of mass 0.37 g used as a window on an x-ray tube
The mixture is cooled to the temperature of liquid nitrogen at which ammonia freezes out and the remaining gas is removed from the vessel. Upon warming the vessel to 0.00°C and one atm, the volu
How much rations must the hiker consume to avoid a reduction in body temperature of 4.0 K as a result of heat loss? Assume the heat capacity of the body equals that of water and that the hiker weigh
A parallel beam of light containing red (660 nm) and blue (470 nm) wavelengths goes from polystyrene to water, What is the angle between the two colors in water
Given that benzaldehyde is a meta- director, draw all three resonance structures for the carbocation intermediate that results from STEP 2 in the electrophilic aromatic substitution reaction when be
The side mirrors on cars are convex mirrors. If the side mirror on the driver side of your car has a focal length with a magnitude of 5.30 m, determine the image distance of the truck
The sucrose solution used in the fermentation was 0.350 M. Assume solubility of CO2 in water equivalent to the solubility in the sucrose solution. Hint: some of the CO2 obtained from the fermentatio
A scaffold of mass 60 kg and length 5.5 m is supported in a horizontal position by a vertical cable at each end. find the tension in the cable closer to the painter
calculate p value for each ion Ba 2+, Mn 2+and Cl- in a solution that is 4.62 x 10^-3 M in BaCl2 and 1.78 M in MnCl2
A volume of 5.0 mL of solution of sodium carbonate was analyzed and found to contain 6.34x10^-4 moles of carbonate ion. Calculate the molarity of sodium carbonate in the solution.
A rope, assumed massless, is stretched horizontally between two supports that are 3.43 m apart. obtain the tension in the rope
Calculate the molarity of sodium sulfate in a solution prepared by mixing 35 mL of 0.15 M sulfuric acid with 15 mL of 0.85 M sodium hydroxide.
How many mL of 36 % (g/g) HCl should be diluted to 1.0 L to make a 6.0 M HCl solution? The density of 36% HCl is 1.18 g/mL.
The distance between the eyepiece and the objective lens in a certain compound microscope is 24.5 cm. compute the overall magnification of the microscope
What is the molarity of a solution made by mixing 25 mL of 8.0 M hydrocholoric acid with 300 mL of 2.0 M hydrocholoric acid
What is the molarity of hydrogen ion in the above sulfuric acid solution if you assume the sulfuric acid ionizes completely? the above sulfuric acid solution is 0.07 M.
A vessel contains 0.90g liquid H2O in equilibrium with water vapor at 30C. At this temperature, the vapor pressure of H20 is 31.82 torr. What volume increase is necessary for all of the water to eva
What is the molarity of the solution that was prepared by dissolving 3.2 g of sulfuric acid in water to a total volume of 500 mL
The acceleration due to gravity on the Moon's surface is known to be about one-sixth the acceleration due to gravity on the Earth. find the mass of the Moon in terms of the mass of the Earth