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The amino acid methionine, which is essential in human diets, has the molecular formula C5H11NO2S. Determine the number of grams of H in 0.689 grams of methionine.
When a 10.00 mg sample of the unknown compound was combusted, it produced 16.27 mg of CO2, 5.55 mg of water, and 7.90 mg of SO2. What is the empirical formula of the unknown compound?
Choose coordinate systems for the two masses with the positive direction up for mA and down for mB. What is the acceleration of the smaller mass.
Solution of water (Kf = 1.86^ C/m) and glucose freezes at - 2.55^ C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 ^ C.
A speed skater moving across frictionless ice at 8.9 m/s^2 hits a 5.5 m wide patch of rough ice. She slows steadily, then continues on at 5.9 m/s^2 What is her acceleration on the rough ice?
Sam, whose mass is 60.0 , takes off down a 53.0 high, 12.0 slope on his jet-powered skis. The skis have a thrust of 200 . Sam's speed at the bottom is 38.0. what is the coefficient of kinetic frict
Complete combustion of 10.31 g of a particular hydrocarbon yielded 33.14 g CO 2 and 11.30 g of H 2 O. What is the empirical formula of this hydrocarbon?
A shopper pushes a cart 27 m south down one aisle and then turns 90.0° west and moves 17 m. He then makes another 90.0° turn and moves 13 m. What is the largest displacement?
95 kg of oxygen is consumed, and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is produced?
A 4.2029-g sample of a hydrate of Cu(NO3)2 was heated to drive off all of the water of hydration. The remaining solid weighed 2.6663 g. If Cu(NO3)2.x H2O represents the formula of the hydrate, then
A uniform electric field with a magnitude of 125,000 N/C passes through a rectangle with sides of 2.50 m and 5.00 m. The angle between the electric field vector and the vector normal to the rectangu
A spring (70 N/m) has an equilibrium length of 1.00m. The spring is compressed to a length of 0.50} and a mass of 1.8 k is placed at its free end on a frictionless slope which makes an angle of 41 d
A flight attendant pulls her 69 N flight bag a distance of 246 m along a level airport floor at a constant velocity. The force she exerts is 37 N at an angle of 58° above the horizontal. Find t
A mixture consisting of 2.50×10!3 g of O2, 3.51×10!3 mol of N2, 4.67×1020 molecules of CO are placed in a vessel with a volume of 4.65 L at 15.4°C.
What is the maximum mass of I2 that can be obtained from 46.5 g KMnO4, 104 g KI and excess H2SO4?
How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100 worth of gold?
A submarine dives 155.0 m at an angle of 12.0? below the horizontal. What is the horizontal component of the submarine's displacement?
A grindstome of radius 4m is initially spinning with an angular speed of 8 rad/s. Angular speed is the increased to 10 rad/2 over the next 4 seconds. What is the average tangential speed at the edge
According to the kinetic theory of gases, the translational kinetic energy of an ideal gas is given. Calculate the translational kinetic energy per mole for the He atoms and for the Ar atoms.
What is the molarity of C5H10O5 in an aqueous solution that is prepared by dissolving a 23.95 g sample of impure C5H10O5 in water to make 1,175 mL of solution. Assume that the sample is 77% C5H10O5
The acceleration due to gravity on the moon is 1.62 {rm{ m/s}}^{rm{2}}. What is the length of a pendulum whose period on the moon matches the period of a 1.60-m-long pendulum on the earth?
A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 59 ms. (a) How far below the release point is the center of mass of the two st
An aqueous stock solution is 85.0% H3PO4 by mass and its density is 1.69 g/mL. What volume of this solution is required to make 1.00 L of 1.70 mol/L H3PO4(aq)? Give your answer in millilitres, accur
In the laboratory, a student named Georgia weighed 5.05 grams. Which component of the mixture is dissolved in the acetone?
Water flows over a dam at the rate of 680 and falls vertically 86 before striking the turbine blades. Calculate the speed of the water just before striking the turbine blades (neglect air resistance