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What is the limiting reactant when 3.41g of lithium with 2.79g of copper II nitride?predict the products, write a balanced equation, calculate the limiting reactant, calculate the amount of lithium
What is the balanced equation for C2H4+3O2 -> 2CO2+2H2O
A solution is prepared by adding 5.00 grams of an unkown compound to 217 g of cyclohexane (C6H12). This solution freezes at 4.5 degree C. Calculate the molar mass of the compound.
Answer the following questions based on the information provided above and justify your answer next to each question. Which of the ions are present in the solution sample?
A 1300-{rm kg} car rolling on a horizontal surface has speed v = 50 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.7 m. What is the spring stiffness consta
How many moles of methane occupy a volume of 2.00 L at 50.0 °C and 0.500 atm? (R = 0.0821 atm·L/ mol·K)
How much heat does your body lose when 1.8 of sweat evaporates from your skin at 25 ? (Assume that the sweat is only water.) The heat of vaporization of water at 25 is 44.0.
A catapult launcher on an aircraft carrier accelerates a jet from rest to 77 . The work done by the catapult during the launch is 7.0×107 J. (a) What is the mass of the jet?
Suppose that your mixture showed a good TLC separation with methylene chloride, but you inadvertently eluted the column with methanol. What would happen?
Write the expression for Keq of the following reaction:
When the wax melts, the block slides out to the end of the rod. What is the final angular velocity? Give your answer in rpm.
A 135 mL sample of a 15.0 M ethylene glycol (rm C_2H_6O_2) solution is diluted to 1.50 L. What is the freezing point of the final solution? (Assume a density of 1.06 g/mL for the final solution.)
What is the magnitude of the net gravitational force on the mass at the origin due to the other two masses?
How can you improve the overall yield of vanillyl alcohol from the reduction of vanillin?
How many grams of H2O can be cooled from 45 degrees C to 15 degrees C by the evaporation of 63 grams of water. The heat of vaporization is 2.4 KJ/gram and the Specific Heat of water is 4.18 J/gK.
Calculate the initial rate of the NO reduction at 1100 K if 400.00 mg of NO and 600.00 mg of H2 are confined to a 5.00 L reaction vessel.
A dog searching for a bone walks 4.00 m south, then 8.20 m at an angle of 30.0° north of east, and finally 12.0 m west. Use graphical techniques to find the direction of the dog's resultant disp
What is the pH at the equivalence point when 30.0mL of 0.175 mol/L HCOOH is titrated with 0.135 mol/L NaOH? Assume the temperature is 25 degrees celcius. For HCOOH, pKa=3.74 at 25 degrees celcius.
A solution of salt (molar mass 90 g mol -1) in water has a density of 1.29 g/mL. Calculate the mole fraction of the salt in the solution
A space station, in the form of a wheel 105 m in diameter, rotates to provide an "artificial gravity" of 2.50 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of ro
What mass of octane must be burned in order to liberate 5350 kJ of heat? ΔHcomb = -5471 kJ/mol.
A sample of gas occupies a volume of 396 mL at 1.28 atm and 72 oC. Calculate the volume of the gas if its temperature is changed to -31.5 oC while its pressure is held constant.
A horse canters away from its trainer in a straight line, moving 116 m away in 14.0 seconds. it then turns abruptly and gallops halfway back in 4.8 seconds. calculate (a) its average speed and (b) i
If a person ingests 9.00 mL of 14.0mM NaCN, what percentage of iron(II) in the blood would be sequestered by the cyanide ion?
A 1.50 L mixture of helium, neon, and argon has a total pressure of 1.47 atm at 298K. If the partial pressure of helium is 0.38 atm, and the partial pressure of argon is 0.32 atm, what mass of neon