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A perfect steam engine, operating at 400 celcius and discharging at 25 celcius and generating 5,000 kj in heat, accelerates a 1,000kg sled at a rate of 50m/s^2. how far can it push the sled?
What is the mass of 67.0 mL of ethanol. The density of ethanol at room temperature = 0.789g/mL
imagine that you run a nursing home facility in your area. analyze and comment on the role public policy has in the
What is the volume of a balloon that contains 34 moles of calcium bicarbonate?
it is given that the half-life of strontium-90 is twenty eight years. calculate how many grams of this nuclide in anbsp
A gas cylinder that contains argon has an internal volume of 6.88 L. A pressure gauge attached to the cylinder reads 1870 psi (1 atm = 14.7psi) at 20.0C.
treatment of 1.385 g of an unknown metal m with an excess of aqueous hcl evolved a gas that was found to have a volume
calculate the amount of heat released when 50g of steam at 100 degrees celsius hits the skin condenses and cools to a
A gaseous mixture of O2 and N2 contains 34.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 445 mmHg
The above sodium hydroxide solution (the titrant) is used to titrate the nitric acid solution (the analyte). If 16.77 mL of the titrant is dispensed from a buret in causing a color change of the phenolphthalein, what is the molar concentration of ..
A 3.00 L helium balloon, initially at STP, floats up to an altitude of 10 km, where the pressure is 200.0 torr and the temperature is -45°C. What is the balloon's new volume?
A voltaic cell is constructed with two Zn+2-Zn electrodes. The two cell compartments have [Zn+2]=5.00 M and [Zn+2]=1.00 x 10^-2 M, respectively. What is the standard emf of the cell?
while mercury is very useful in barometers mercury vapor is toxic. given that mercury has a hvap of 59.11 kjmol and
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