How much heat was transferred and in which direction
If the internal energy of a thermodynamic system is increased by 300. J while 75 J of expansion work is done, how much heat was transferred and in which direction, to or from the system?
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A neon atom (m = 20.0 u) makes a perfectly elastic collision with another atom at rest. After the impact, the neon atom travels away at a 56.0° angle from its original direction and the unknown atom travels away at a 50.0° angle. What is t
The change in the animal's velocity takes 1.7 s. (Use east as the positive direction.) (a) What is its acceleration from the prespective of the cameraman?
A 447 cm3 volume of Na2CO3 solution was warmed with an excess of sulfuric acid until all action ceased. A 5.0 L volume of dry CO2 gas measured at STP was given off and collected. What was the molarity of the sodium carbonate solution?
A sol. of unknown Calcium concentration is titrated using EDTA. The EDTA is first standardized against a primary standard Zinc sol. prepared by dissolving 0.4088g of Zn in 1.000L of sol. A 20.00mL aliquot of the Zn sol. required 31.06 mL of EDTA s
A sample of an ideal gas at 15.0 atm and 10.0 L is allowed to expand against a constant external pressure of 2.00 atm at a constant temperature. Calculate the work in units of kJ for the gas expansion.
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.2 m/s at ground level. The engines then fire, and the rocket accelerates upward at 3.80 m/s2 until it reaches an altitude of 1020 m.
A solution is made from 96 g of a nonvolatile solute in 80 grams of water. The solution has a vapor pressure of .312 atm at 75 degrees C. Calculate the molar mass of the nonvolatile solute. The vapor pressure of pure water at 75 degrees C is .380
A 61 kg worker starts walking from one end of the car to the other in the direction of motion, with speed 2.0 m/s with respect to the car. In the time it takes for him to reach the other end, how far has the flat car moved?
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