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Calculate the % atom economy for the following two methods for converting benzene, C6H6, to aniline, C6H5NH2.
What effect would the incomplete drying of a sample (for example, the incomplete removal of a recrystallization solvent) have on the melting point
What would happen to the melting point if this unknown were mixed with (a) an equal quantity of pure acetanilide. (b) an equal quantity of benzoic acid
predict the organic product of the following reaction CH2=C(CH3)2+ H-0-H with H2SO4?
To what final volume should you dilute 60.0mL of a 5.40M KI solution so that 40.0mL of the diluted solution contains 3.75g of KI
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, which has a focal length of 27.0 cm. What is the focal length of the second lens
A long, straight wire carrying a current of 5.00 A is placed along the axis of a cylinder of radius 0.500 m and a length of 5.00 m
How much of a 15.0M HNO3 solution should you use to make 850.0mL of a 0.300M HNO3 solution
A function generator with output V(t) = 12cos(500t)V is connected with a resistor R = b15?, What is the maximum current passing through the resistor
Fe(NO3)3, 5 drops of 0.1 M KCNS why are ions present when you mix those solutions? I also conducted the experiment using an unknown and got the same results for both.
An AC source with Vrms = 15V is connected in series with resistor R = 15?, a capacitor C = 100?F, What is the average power dissipated from the source
Liquid nitrogen has a density of 0.808g/ml at 77 K. A sample of 2.5 L of liquid nitrogen is allowed to evaporate at 21°C and 1.00 atm of pressure. what volume will the nitrogen gas occupy?(keep
Monochromatic light falls on two very narrow slits0.042mm apart. Successive fringes on a screen6.50m away are 8.4cm apart near the center of the pattern. Determine the frequency of the light.
A11.6 g sample of a certain gas was introduced into a constant volume container at 25 °C. if the container were heated to 175 °C, how many grams of gas must be vented from the container to k
We accelerate electrons between two parallel plates a few cm apart. We apply 2.05 MV across the plates. Find the momentum of the electron
Blood alcohol content (BAC) is often reported in weight-volume percent (w/v%). For example, a BAC of 0.08% corresponds to 0.08 g CH3CH2OH per 100 mL of blood.
A 3.00-m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 0.440 m/s. Calculate the magnitude of the induced emf between the ends of the wire. (in &m
An object is located 8.00 cm from a converging lens that has a focal length of 10.0 cm. The height of the object is 0.67 cm. What is the height hi of the image
Solid benzoic acid, C6H5COOH(s), is often used to determine the heat capacity of a bomb calorimeter, because the constant volume heat of combustion of this compound is known with high precision: qV
Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, ofH?, at 25 oC for this compound. ofH? values at 25 oC for CO2(g) and H2O(l) are ?39
A Breathalyzer instrument contains two ampules, each of which contains 0.75 mg K2Cr2O7 dissolved in 3 mL of 9 mol L?1 H2SO4(aq). One of the ampules is used as reference. When a person exhales into t
he density of free electrons in gold is 5.90x10^28 m^-3. The resistivity of gold is 2.44x10^-8 ohms.m at a temperature of 20 C, what is the drift velocity of the electrons in the wire
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.97 times longer to effuse than does a 0.100 L sample of Ar(g). What is the
A horizontal 790-N merry-go-round of radius 1.20 m is started from rest by a constant horizontal force of 45 N, Find the kinetic energy of the merry-go-round after 5.0 s