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When copper is heated with an excess of sulfur, copper(I) sulfide is formed. In a given experiment, 2.33 g of copper was heated with excess sulfur to yield 1.76 g of copper(I) sulfide. What is the p
Assume that the temperature of the body at the time of death was 98.6 fahrenheit and that is has cooled in accourd with Newton's law. What was the time of death ?
Assuming gasoline is 89.0% isooctane, with a density of 0.692 g/mL, what is the theoretical yield (in grams) of CO2 produced by the combustion of 1.56 x 1010 gallons of gasoline
Data: SO2(g) + 1/2O2(g) => SO3(g) ?H = -99kJ Use the data above to calculate the standard enthalpy change for the reaction below. Reaction: 2SO3(g) => O2(g) + 2SO2(g) H
A circular coil of wire with 200 turns and a diameter of 6cm carries a current of 7A. What is the torque on the coil
Drag racing combines the reflexes of the driver with a powerful engine to propel a specially designed car across a quarter mile as quickly as possible. What is the time for the car to go the quarter
write the balanced equation for the combustion of isooctane (C8H18) to produce carbon dioxide and water. Use the smallest possible integers to balance the equation.
A uniform field E = -170000 j N/C exists between two plates of length L = 3 cm. Find the angle at which it emerges
The following pairs of soluble solutions can be mixed. In some cases, this leads to the formation of an insoluble precipitate. Decide, in each case, whether or not an insoluble precipitate is formed
A solid wood door 1.00 m wide and 2.00 m hight is hinged alone one side and has a total mass of 40.0 kg, whats the final angular speed of the door
Find the amounts x(t) and y(t) of ethanol in the two tanks at time and how much ethanol whill be in tank 2 when it finally, fills up.
What mass of concentrated sulfuric acid (98.0 % H2SO4 by mass) must be used to react completely with 164.9 g of Ca3(PO4)2
The equation of a transverse wave on a string is y = (2.0 mm) sin[ (20 m-1)x - (600 s-1)t)]. Find the linear density of this string in grams per meter
Classify each compound as a strong electrolyte, weak electrolyte, or non-electrolyte. HI HClO4 CH3OH HC2H3O2
A man pushes a lawn mower on a level lawn with a force of 200N. If 40% of this force is directed downward, then how much work is done by the man
Iterates until convergence is reached (the previous guess for the velocities is not significantly different from the current guess and calculates the friction factor for the current guess of velociti
Which compound of each set has the highest and lowest boiling point? Decribe the factors that mitigate these values. A) CH4, CH3CH3, CH3CH2CH3, CH3CH2CH2CH3 B) CH3Cl, CH2Cl2, CHCl3, CCl4
A 1100kg car traveling south at 24 m/s with respect to the ground collides with and attaches to a 2550kg delivery truck traveling east at 16 m/s. Determine the direction of the velocity of the two v
A 4.40-g lead bullet at 32.0°C is fired at a speed of 230 m/s into a large block of ice at 0°C, What quantity of ice melts
Consider the monobromination of 4-ethylheptane using Br2 and UV light. How many unique alkyl halide products could be formed during this reaction
Detailed calculations show that the value of Z eff for the outermost electrons in Na and K atoms is 2.51+ and 3.49+ , respectively. What value do you estimate for Zeff experienced by the outermost e
The following reaction is endothermic in the forward direction. NH4Cl(s) <->NH3(g) + HCl(g) For each of the following cases, briefly explain whether the action causes net reaction from left to
The moon is a satellite that orbits the earth at a radius of 3.85 108 m. What is the orbital speed of the moon
What will happen to the retention time if the temperature of the column is increased. Calculate the following peak areas from your GC chromatogram.
On a distant planet, golf is just as popular as it is on earth. On the distant planet, what is the maximum height of the ball