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The route followed by a hiker consists of three displacement vectors a, b, and c. Vector a is along a measured trail and is 1550 m in a direction 29.0° north of east. Vector b is not along a mea
Tungsten (W) forms a body-centered cubic unit cell with an edge length of 317pm. What is the length of diagonal that crosses through the body of the unit cell?
a beaker contains 100 grams of 0.50M NaCl. If you transfer 50 grams ofthe solutopn to anouther beaker, what is the molarity of the solution remaining in the first beaker.
Draw and name all the monochloro consitutional/structural isomers formed by free-radical chlorination of 3-methylpentane.
108 mm Hg on the open end. If the atmospheric pressure is 760 torr, what is the pressure of the gas (in mm Hg or torr) in the closed end of the manometer?
Using the Fraunhofer equation, nl = d(x/L), calculate the separation distance between the lines on the slide (in inches).
Chlorine molecules will dissociate at high temperatures into chlorine atoms. At 3000C , for example, kc for the equilibrium shown is 0.55. If the partial pressure of chlorine molecules is 1.5 atm,
If 35.8 mg of the compound is dissolved in enough water to make 175 mL of solution at 25°C, what is the osmotic pressure of the resulting solution?
If 158 mL of wet H2 is collected over water at 24 degrees Celsius and a barometric pressure of 739 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr.)
What is the standard heat of reaction for the following reaction?
Your reaction time before stepping on the brakes is 0.50 rm s , and the maximum deceleration of your car is 10 rm m/s^2 . How much distance is between you and the deer when you come to a stop? What
Calculate the molarity of the HCl solution from the moles of acid needed to neutralize the sodium carbonate primary standard. 0.202g of sodium carbonate was added to 100mL of distilled water. Then
The lead sulfate which was recovered weighed 333 mg. What is the percent, by weight, of lead in the ore?
Draw all resonance structures of the most stable conjugate acid of CH3NHCNH2NH2 including lone pairs radical electrons and atomic charges where appropriate. Add hydrogen atoms to heteroatoms where
A 2.3kg mass is connected to a spring with spring constant = 140N/m and unstretched length 16cm . The pair are mounted on a frictionless air table, with the free end of the spring attached to a fric
At equilibrium the density of the gas mixture is 0.515g/L at 0.755 atm. Calculate the Equilibrium Constant (Kc) for the reaction.
To store the energy produced in 1.0 hour by a 160 electric power plant, how many cubic meters of water will have to be pumped from the lower to the upper reservoir? Assume the upper reservoir is 340
Glucose (C6H12O6) and sucrose (C12H22O11) are both carbohydrates, using standard enthalpies of formation, calculate using significant figures the molar enthalpy of combustion to CO2 (g) and H2O (l)
Charge is uniformly distributed around a ring of radius R = 4.60 cm and the resulting electric field magnitude E is measured along the ring's central axis (perpendicular to the plane of the ring). A
What are the balanced half reactions for these: Using half reactions which metal is most easily oxidized. Which of above metals is most easily reduced?
A chair of weight 90.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 35.0 N directed at an angle of 37.0 degrees below the horizontal and
Calculate the percent by mass of water in the hydrated calcium sulfate salt. Calculate the moles of water removed and the moles of anhydrous CaSO4 reamaining in the crucible.
Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in the following electron-transfer reaction.
The leg and cast in the figure below weigh 270 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 145 N. Determine the weight w2 and the angle &al