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calcualte the precentage error that would result from the use of the ideal gas equation of state for the calculation.
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 4.4 minutes
A biochemist studying the break down of insecticide DDT finds that it decomposes by a first-order reaction w/ a half-life of 12 years. How long does it take DDT in the soil sample to decompose from
A 2.80-kg block starts from rest at the top of a 30.0° incline and slides a distance of 2.10 m down the incline in 1.20 s. Find the magnitude of the acceleration of the block.
The following reaction was monitored by measuring the partial pressure of oxygen. The pressure was measured at 25 degrees Celsius.
A proton (1e) and an alpha particle charge = 2e, mass = 6.64 x10^-27 kg are initially at rest, separated by 4.00 x 10^-15 m. Find the speeds of the proton and alpha particle
A playground is on the flat roof of a city school, 5.9 m above the street below (see figure). The vertical wall of the building is h = 7.40 m high, Find the speed at which the ball was launched
Perform the calculatons for the extraciton of 100 mg of P in 300mL of water with three 100-mL portions of ether. assume the partition coefficient is 3.5
A major motor company displays a die-cast model of its first automobile, made from 6.60 kg of iron. What mass of gold is needed to make the new model
How many atoms of hydrogen are in 1 molecule of water, H2O
An airplane has a mass of 28,000 kg and takes off under the influence of a constant net force of 44,000 N
Consider the reaction A -> B the rate of the reaction is 1.6 x 10^-2 m/s when the concentration of A is 0.35 M. Calculate the rate constant if the reaction is first order in A.
A 12-V battery causes a current of 0.85A through a resistor. How many joules of energy does the battery lose in a minute
We add some solid silver chromate (Ag2CrO4, Ksp = 1.100x10-12) to a solution of 1.2202 M Li2CrO4. After equilibrium is achieved, what is the pAg (=-log[Ag+]) of this solution
The average speed of a nitrogen molecule in air is about 6.70 * 10^2 m/s, and its mass is about 4.68 * 10^-26 kg. What average force does the molecule exert on the wall
What are peristatic movement and their role in human digestion process of chylomicrons
A 1.7 kg rolling hoop with a radius of 9 cm rolls without slipping. If the angular speed of the hoop is 2.46 rad/s , compute rotational kinetic energy of the rolling hoop
In a titration of 29.01 mLs of 0.211 M HCOOH (formic acid, Ka = 1.8x10-4) with 0.255 M KOH, how many mLs of titrant will be required to reach the equivalence point
An aircraft takes off at 203 km/h after accelerating from rest at 2.14 m/s2. What is the minimum runway length required
the rate constant for a reaction is 7.7 x 10^-3 s^-1 at 25 C, and the activation energy is 33.6 kj/mol. what is k at 75C
Suppose that the microwave radiation has a wavelength of 11.2cm . How many photons are required to heat 295mL of coffee from 25.0C to 62.0C
Consider a cube of sides a = 4.60 m, as shown in the diagram below. Suppose that an electric field is present and is given by E = bxn, Calculate the magnitude of the total charge within the cube
A stone is dropped from a cliff; 2.08 s later another stone is thrown downward with an initial speed of 31 m/s. Find the height of the cliff
How many molecules of NH3 do you have when you have 2.6 moles of NH3. How many moles of water do you have when you have 1.12 x 10 26 molecules of water
During an electrostatic field experiment, you assume that the electric field lines are in the plane of the paper, What condition determines the accuracy of this assumption