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A solution of cough syrup contains 5.00\% active ingredient by volume. If the total volume of the bottle is 34.0mL , how many milliliters of active ingredient are in the bottle? Express your answer
When a 700? resistor is connected across an AC power supply, the resistor dissipates energy at a rate of 15.0W. Find the maximum current through the resistor
How many centimeters does light travel in 5.00 years (given that the velocity of light is 3.00 \times 10^{10} {\rm cm}/{\rm s})? Express your answer with the appropriate units.
A catcher catches a fastball going 95mi/hr and recoils 12cm while stopping the ball in 0.005s. FIND the average force the ball exerts on the hand & glove
The statements in the following multiple choices deal with various aspects of reaction rates
A spherical 3-mi diameter comet impacts the earth with a velocity of 20 mi/s. Calculate the amount of heat released from the impact site
A plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19 -T magnetic field. The loop carries a current of 6.2 A. obtain the magnetic moment of the loop
Which element has 55 neutrons, 36 electrons, 40 protons and has a mass of 95. I know its 95Mo but does it have a ion charge of +2,+4,or+6? I've tried +2 and +6 but its wrong. Help would be appreciat
The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 38Nm . You plan to tighten the plugs by pulling on the end of a 30-cm-long wrench. With what force must yo
A playground merry-go-round of radius R = 1.80 m has a moment of inertia I = 255 kg · m2 and is rotating at 9.0 rev/min about a frictionless vertical axle. What is the new angular speed of th
A solution containing 26.50mg of an unknown protein per 29.5mL solution was found to have an osmotic pressure of 3.75torr at 13C. What is the molar mass of the protein
A new electric power plant has an efficiency of 42%. how many are essentially lost as waste heat (in barrels of oil) to the environment
Calculate the osmotic pressure of a solution containing 25.9g of glycerin (C3H8O3) in 243.5mL of solution at 310K.
0.45 kg of a metal at 90.°C is added to 0.40 kg of water at 20.0°C. If the final temperature of the mixture is 26.°C, what is the specific heat of the metal
Ten meter long steel railroad rails are laid end to end, with no space between, on a hot day when the temperature is 115.°F. How much space now exists between each rail
You place a 4.47-mm-high diamond on the axis of and 11.3 cm from a lens with focal length -6.79 cm. How high is the image
A pump flows 100 gal/min of water. The inlet pressure is 0 psig and the outlet pressure is 20 pisg. How much electricity (kW) is required to power the motor
Determine the electrostatic potential energy of an electron in the ground state of the hydrogen atom
An aqueous solution containing 16.2g of an unknown molecular (nonelectrolyte) compound in 102.0g of water was found to have a freezing point of -2.0C.
A rigid (constant volume) container holds 4.6 moles of an ideal gas initially at 190 K and 2.0 atm. How much gas is in the container at the final pressure and temperature
Calculate the vapor pressure of a solution containing 25.3g of glycerin C3H8O3 in 125mL of water at 30.0C. The vapor pressure of pure water at this temperature is 31.8torr}
According to highly accurate GPS-measurements , the continent of North America is drifting with a speed of 1cm/year. estimate the kinetic energy the continental US has
A beam of neutral hydrogen atoms with a speed of 104 m/s along the x-axis enters a 1 m long region, compute The acceleration of the atoms while in the magnetic field region
Calculate the vapor pressure of a solution containing 25.3g of glycerin C3H8O3 in 125mL of water at 30.0C. The vapor pressure of pure water at this temperature is 31.8torr}. Assume that glycerin is
A motorist drives south at 22.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 3.00 min, Find the total vector displacement and south west