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Suppose buffer #1 is prepared using 40.0 mL 0.1 M HC3H5O3 and 60.0 mL 0.1 M C3H5O3- to give a final volume of 100.0 mL. What is the pH of this buffer
A ball thrown horizontally at 28 m/s travels a horizontal distance of 55 m before hitting the ground. From what height was the ball thrown
Draw structural formulas (full or condensed) and give the molecular formulas for the following compounds. a)2-methylpropane b)2,4-dimethylpentane c)2,2-dimethylpentane
target 1 cm2 in area and 0. 1 cm thick. There are 0.048 x 1 024 atoms per cm3 in the target, and the total cross-section at the energy of the beam is 4.5 b. What is the macroscopic total cross-secti
A door with width L = 1.0 m and mass M = 15 kg is hinged on one side so that it can rotate freely. What is the angular velocity of the door with respect to the hinge just after the bullets embeds itse
Lithium will react with oxygen in a pressurized container to produce solid lithium oxide at 25°C. If 0.125 g Li(s) is placed in a 0.450 L container filled with oxygen at 1.85 atm, determine the
A skater spins with her arms extended at a speed of 11 m/s. If she then whips her arms in to her body to form a circle with a radius of 0.4 m, what was the radius of the circle
A person with a fear of heights drives across a high bridge. which structure will stimulate a response from the autonomic nervous system?
Liquid nitrogen has a density of 0.808 g/mL at 77 K. A sample of 1.5 L of liquid nitrogen is allowed to evaporate at 22.2 °C and 0.998 atm of pressure. What volume will the nitrogen gas occupy
A 498 mL sample of laughing gas, N2O, is at 30 oC and 414 torr pressure. (a) How many gas molecules are present? (b) How many atoms are there
Nitromethane CH3NO2) burns in air to produce significant amounts of heat. How much heat is produced by the complete rection of 6.66kg of Nitromethane
A sample of diatomic gas has a density of 0.002061 g/mL at 1.8 atm pressure and 25.0 °C. Identify the gas.
Describes the genders of two children Describes the genders of two children
The pH of a 0.10 M nicotinic acid solution is 2.93. What is the approximate value of Ka for nicotinic acid, HC6H4NO2? Assume small percent dissociation
It takes 151 kj/mol to break an iodine-iodine single bond. Calculate the maximum wavelength of light for which an iodine-iodine single bond could be broken by absorbing a single photon.
Benny the Barber owns a one-chair shop.
The pH of a 0.10 M nicotinic acid solution is 2.93. What is the approximate value of Ka for nicotinic acid, HC6H4NO2? Assume small percent dissociation. pH = ?log10[H+].
Explain the effect of the following experimental errors on your results: a) You add hexane to the reaction flask instead of 1-hexene b) You use 3% hydrogen peroxide instead of 30% c) You forget to a
#2: Let G be the graph with vertex set Z_2^n( the same as the n-cube) and with edge set defined as follows: {u, v} is an edge of G if u and v differ in exactly two coordinates (i.e., if ω( u
a typical sedan ( like corolla Toyota) has unloaded mass of 1.2x10^3 kg. Determine the effective spring constant "k" for the suspension system for critical damping
A gas mixture containing 80.0 mol% N2 and the remainder n-heptane flows through a pipe at a rate of 10.0 m3/h. The pressure is 0.90 atm and the temperature is 100°C. a. What is the molar flow ra
A spherical capacitor is formed from two concentric spherical conducting shells separated by vacuum. What is the electric-field energy stored in the capacitor
A shoe salesperson is paid the greater of $600 per week or 11% of sales. At what volume of sales per week will he start to earn more from the commission based compensation?
Two identical probes are sent along the same path toward a neutron star. Find the distance between the center of mass of the two probe system
The demand for Carolina Industries' product varies greatly from month to month.