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In the decomposition of hydrogen peroxide, the percentage yield of oxygen is 93%. What is the actual yield in grams of oxygen if you start with 100 grams of H2O2? The reaction proceeds according to
.850 L of 0.410 M H2SO4 is mixed with .800L of .240 M KOH. what concentration of sulfuric acid remains after neutralization .
A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.18 and the push imparts an initial speed of 3.9 m/s?
A pitchere containing 0.75L of water at 4C. is removed from the refrigerator. How may kilojoules are needed to warm the water to a room temperature of 27C.
What percentage (by moles) of the original N2O4(g) is dissociated at the new equilibrium position (total pressure = 1.00 atm)?
If ammonia gas reacts with sulfuric acid to produce ammonium sulfate, calculate how many liters of ammonia is needed to react with 150 kg of sulfuric acid at 20 degrees C and 25 atm?
A 78 kg diver steps off a 11 m tower and drops, from rest, straight down into the water. If he comes to rest 4.1 m beneath the surface, determine the average resistance force exerted on him by the w
At a given temperature, Kp for the reaction below is 0.24. In a given experiment, 0.10 atm of each product and 0.0020 atm of NOBr are intoduced into a container. In which direction will the reaction
How does the strength of an oxoacid is dependent on the elecronegativity and oxidation number of central atom?
A sample of calcium carbonate absorbs 45.5 J of heat upon which the temperature of the sample increases from 21.1 degrees celcius to 28.5 degrees celcius. If the specific heat of calcium carbonate i
If 0.500 mole of carbon disulfide reacts with oxygen completely accorind to the following reaction what would the total volume of the products be at 25 C and 4.23 atm?
A 12 gram sample of an organic compound was analyzed and the following results were obtained. What is the empirical formula of the compound?
A mixture of gases containing 21.0 g of N2, 106.5 g of Cl2, and 12.0 g of He at 14 oC is in a 50.0 L container. What is the partial pressure of N2?
A wild horse starts from rest and runs in a straight line 29° north of west. After 33 s of running in this direction, the horse has a speed of 17 m/s. (a) What is the magnitude of the horse's av
What is known about the strength of quadruple bonds compared with the strength of the triple bond in acetylenes and N2?
The density of liquid oxygen at its boiling point is 1.14 {kg/L} , and its heat of vaporization is 213 {kJ/kg}. How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized
A toaster rated at 1000 W operates on a 120 V household circuit and a 4.00 m length of nichrome wire as its heating element. The operating temperature of this element is 310°C. What is the cross
A plane flies 345 km due south, then turns and flies 615 km at a heading 45.0 degrees north of east, until its due east of its starting point. if the plane now turns and heads for home, how far will
The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?
What will the pressure inside the container become if the piston is moved to the 1.80 mark while the temperature of the gas is kept constant?
A displacement vector is 19.0 m in length and is directed 33.0o east of north. What is the northward component of this vector? What is the eastward component of this vector?
The reaction: 2 C7H5N3O6-> 3 N2 + 5H2O + 7CO + 7c. if 2.9 ml of water was recovered, what volume of gas was produced? assume standard conditions and d= .998 g/ml-1
A speedboat moving at 40.0m/s approaches a no-wake buoy marker 100m ahead. The pilot slows the boat with a constant acceleration of negative 3.05 m/s^2 by reducing the throttle. How long does it tak
A mixture of 3.8 g H2 (gas) and 11.6 g He(gas) in a 5. L flask is maintained at 0 degrees C}.What is the partial pressure of each gas (in atm)?
Calculate the pH after .020 mol HCl is added to 1L of each of the 4 below. a mixture containing 0.112 M NONH2 and 0.112 M HONH3Cl