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What is the change in internal energy (in J) of a system that absorbs 0.582 kJ of heat from its surroundings and has 0.267 kcal of work done on it?
You are the Science Officer on the Starship Enterprise and you come across a new planet. You find that no light with wavelength less than about 650 nm reaches the surface of the planet.
From the data below, calculate the total heat (in Joules) needed to convert 0.333 mol of gaseous Ethanol (MW - 46.07 g/mol) at 300 degrees Celsius
for the reaction described by the following rate law rate k a b2nbspc-1nbsp indicate the order with respect to each
Calculate the final concentration of solute when 25.0 mL of 3.0 M of carbose solution and 37.0 mL of 2.5 M carbose solution are mixed
how would you prepare pentanenitrile from butanoic acid? show the reaction steps indicating the appropriate reagents
If a raindrop weighs 56 mg on average and 5.1 multiplied by 105 raindrops fall on a lawn every minute, what mass (in kg) of rain falls on the lawn in 4.0 h?
For the reaction Cu(s) + 2 Fe3+(aq) Cu2+(aq) + 2 Fe2+(aq), the equilibrium constant is Kc = 3.7×10^14 at 25 oC. Suppose that excess Cu(s) is added to 1.0 L of 0.015 mol L^-1 Fe(NO3)3(aq), with no change in volume. What is the equilibrium concent..
consider a van parked in a lot outside a professional football stadium in atlanta ga on a sunday afternoon. one ounce
Compute the concentrations of all species in a 0.900 M sodium sulfite solution. If it is given that the ionization constants for H2SO3 are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
When this sample was reacted with excess hydrochloric acid, 315.23 mL of hydrogen gas, collected over water at a barometric pressure of 757.1 torr and a temperature of 21.3 C was generated. A) Determine the number of moles of hydrogen gas generate..
Using the data given below, calculate the residence times of the solutes in seawater. The amount of water flowing from rivers to oceans = 3.74 x 10^19 g yr-1 , and the amount of water in oceans = 1.35 x 10^24. What is the residence times of these ..
Consider equal volumes (say 1 rm L) of a substance in the solid, liquid, and gas phases. Arrange them in order of decreasing mass. If the mass difference between samples is relatively small, rank the items as equivalent.
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