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A 5.00mL sample of sulfuric acid is titrated with 0.1198M aqueous sodium hydroxide. If 33.93mL of the basis required to reach the end point of the titration
Find the critical angle of incidence for a ray of light going from a diamond to air
A 0.245 kg ball is thrown straight up from 1.94 m above the ground. Calculate the total work done by the force of gravity during that time
what wavelength of light in nm is absorbed by a ground state hydrogen atom could cause an electron to transition to n=3
With brakes fully applied, a 1550 kg car deccelerates from a speed of 78.0 km/hr. What is the change in the kinetic energy of the car
Oxalic acid, H2C2O4 has acid dissociation constants Ka1 = 5.9 x 102 and Ka2 = 6.4 x 105. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H2SO3
A and B are stereoisomers. They are nonsuperimposable and are mirror images of one another. Which of the following best describes the relationship between A and B
A ray of light passing through air is incident on a piece of quartz (n=1.46) at an angle of 25 degrees. Calculate the deviation d of the ray as it emerges back into the air
In an investigation of the electron absorption spectrum of a particular element, it is found that a photon having wavelength of 500 nm provides just enough energy to promote an electron from the sec
A ping-pong ball of mass 4 gm and traveling with a velocity of 4 m/s collides with stationary tennis ball of mass 5 gm. Calculate the magnitude of the velocity of the tennis ball after the collision
A block of mass 2.0 kg is attached to a horizontal spring that has a force constant of 1.70 103 N/m, Find the work done by initially compressing the spring
The decomposition of hydrogen is a first order reaction with a rate constant of 2.7 x 10^5s^-1 at 25 C. Assuming the initial concentration of H2O2 is 0.75 M. Determine (a) the concentration of H2O2
A hydroelectric power plant is situated at the base of a large dam. Water flows into the intake near the bottom of the reservoir at a depth of 100.2 m, Estimate the maximum possible peak current tha
Determine the cell reaction, the standard cell potential (E0cell) and the half-cell that acts as the cathode for the voltaic cells composed of the following half-cells.
A 2.10-cm-high insect is 1.50m from a 139-mm-focal-length lens. Where is the image? Follow the sign conventions, How high is the image
A refrigeration system contains 575 ml of a gas at 22 degrees C and 1.25 atm. The gas is compressed until it has a pressure of 2.00 atm and a temperature of -6 degrees C. What is the new volume of t
A satellite is circling a small planet at a speed of 3.60 rev/day. If the satellite's orbit has a diameter of 30,000 km, how fast is the satellite moving
A ping-pong ball of mass 2 gm and traveling with a velocity of 2 m/s collides with stationary tennis ball of mass 10 gm. Calculate the velocity of the ping-pong ball after the collision
For a radioactive decay (decomposition of a radioactive substance) the half-life is 6.0 h. How much radioactive substance remains after 22 h, in % (radioactive decay is a first-order process)
HPLC analysis of basic analytes is better to perform at low pH when they are fully ionized (2 pH units lower than analyte pKa). For the analyte with pka= 5.6 and 60/40 acetonitrile/water eluent comp
Explain why selectivity in isocratic HPLC system ideally should not depend on eluent composition. Use thermodynamic derivation to support your explanation.
Two capacitors C1 and C2 are connected in parallel to one another, Find the equivalent capacitance of the system if the C1, C2, C3 are respectively 4, 6, 3.6 uF respectively
An isolated hollow spherical conducting shell has a charge of 10^-6 C. In some manner, a point charge of 3*10^-6 C is placed inside the cavity of the shell,find the charge on the inner surface of th
On the obtained mass-spectra you got in the expected parent-ion mass region two adjacent lines with almost the same abundance