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The first-order bright fringe is a distance of 4.84 mm from the center of the central bright fringe. For what wavelength of light will the first-order dark fringe be observed at this same point on the
3 isotopes of argon occur in nature. Ar-36, Ar-38, and Ar-40. The abundance of each are as follow: 0.34%, 0.07%, and 99.59%, calculate the average atomic weight of argon.
A pendulum is 0.80 m long and the bob has a mass of 1.0 kg. At the bottom of its swing, the bob"s speed is 1.6 m/s. A) What is the tension in the string at the bottom of the swing? B) Explain why th
The combustion of 45.0 g of methane (natural gas) releases 2498 kJ of heat energy. How much energy in kilocalories kcal would combustion of 0.670oz of methane release?
The titration required 287 s at a constant current of 24.25 mA to reach the endpoint.& ; Calculate the percentage of As2O3 (197.84 g/mol) in the insecticide
A 40.4g sample of glucose (a nondissociated, nonvolatile solute with the formula C6H12O6) is dissolved in 152.4 g of water. what is the vapor pressure of this solution at 100c?
A piece of silver with a total mass of 12.31 g was placed in a graduated cylinder filled with 10.00 mL of water. The density of silver is 10.50 g/mL. What will be the final volume in the graduated c
Both teenagers pull with a force of 55 at an angle of 35 relative to the forward direction, which is the direction of motion. In addition, the snow exerts a retarding force on the sled that points o
A compound of nitrogen and hydrogen was burned in air to produce nitrogen dioxide and water. The number of moles of nitrogen dioxide produced was 2.5 times the number of moles of water produced. Wha
A dog searching for a bone walks 3.50 m south, then 8.20 m at an angle of 30.0° north of east, and finally 15.0 m west. Use graphical techniques to find the direction of the dog's resultant disp
The density of chloroform, a widely used organic solvent, is 1.4832 at 20 . How many milliliters would you use if you wanted 119.0 of chloroform?
How much Au will be plated out (from a solution containing Au3+ ) by the same amount of current that plates 10.5 g of Cu (from a solution of Cu2+ )?
How fast (in rpm) must a centrifuge rotate if a particle 9.0 from the axis of rotation is to experience an acceleration of 125,000 g's?
Calculate the final temperature of 25.0 g of ethanol initially at 15C upon absorption of 565J of heat. (Density of ethanol = 0.789g/mL)
A 64 kg hiker climbs to the top of a 3600 m-high mountain. The climb is made in 5.0 h starting at an elevation of 2500 m. a) Calculate the work done by the hiker against gravity.
Several irregularly shaped pieces of zinc weighing 30.0g are droped into a graduated cylinder with an initial volume of 18mL. When the piece of zinc was dropped into the graduated cylinder, the wate
Calculate the theoretical yield of C2H3Cl when 120g of C2H6 reacts with 217g of Cl2, assuming that C2H6 and Cl2 react only to form C2H3Cl and HCl.
A speeding motorist traveling 135 km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 10.0 km/h/s (note the mixed units).
A He-Ne laser (mu=633nm) is used to heat up a sample. How many photons are needed to transfer 12 J of heat to the sample?
The water samples were the first to be analyzed. The analysis began by removing a number of aliquots. An aliquot is (a) a measure of the contamination of the lake water.
Consider a system consisting of 2.0 mol of carbon dioxide gas, initially at 25C and 10 atm and confined to a cylinder of cross section 10.0 cm2. It is allowed to expand adiabatically against an exte
A pain-relieving pill has a mass of 0.005 g rm g. Express the pill's mass in grams using scientific notation or in milligrams.
A graduated cylinder contains 25.0 of water. What is the new water level after 34.2 of silver metal with a density of 10.5 is submerged in the water?
he molar enthalpy of vaporization of NH3 is 23.3 kJ/mol at its normal boiling point of -33.3 .C. How much energy is required to evaporate 1.00 kg of ammonia at -33.3 .C?
What is the minimum length of a string whose fundamental frequency is 272 Hz? The speed of sound at this temperature is 340 m/s.