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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
A 1,000.0 kg car with a speed of 90.0 km/h brakes to a stop. (a) How much energy in J is expended with the stop? and (b) How much heat in kcal is generated by the brakes as a result?
Three gases (8.00g of methane,CH_4, 18.0 g of ethane,C_2H_6, and an unknown amount of propane,(C_3H_8) were added to the same 10.0 L container. At 23.0 degrees C, the total pressure in the container
What volume of methanol is formed if 2.94×1011 of methane at standard atmospheric pressure and 25 is oxidized to methanol? The density of is 0.791 . Assume that the oxidation of methane to met
A 100. mL sample of 0.10 M HCl is mixed with 50. mL of 0.12 M NH3. What is the resulting pH?(kB FOR NH3= 1.8 x 10^-5)
A 774 mL gas sample at STP is compressed to a volume of 267 mL, and the temperature is increased to 32C. What is the new pressure of the gas in Pa?
The equation for the combustion of acetone is: 2 C3H6O + 8 O2 ---> 6 H2O + 6 CO2 + 852.6 kcal How much heat will be given off if 0.18 mol of acetone is completely burned?
What are several pluses for businesses that use outsourcing techniques? What are several minuses? What can companies do to make the best of these widespread practices?
Find the pH of each of the following solutions of mixtures of acids.
Interpret each chemical equation in terms of interacting particles.
If 4.86 g of solid carbon dioxide was placed into an evacuated 2.00 L container, sealed, and then heated until it completely changed to a gas with a final temperature of 75 degrees celcius, what wo
When M2S3(s) is heated in air, it is converted to MO2(s). A 3.700-g sample of M2S3(s) shows a decrease in mass of 0.207 g when it is heated in air. What is the average atomic mass of M?
what will be the heat capacity of a constant pressure, coffee-cup calorimeter that contains 100.0 ml of 3.0 M HCl solution? the density of the sloution is 1.098 g/mL, the specific heat capacity of t
A rifle is aimed horizontally at a target 50.0 m away. The bullet hits the target 1.70 cm below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?