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What is the volume (L) of a sample of gas when 4.50 grams of H20(g) and 35.0g of Xe(g) at 650mmHg are mixed at 200 degrees celsius
The rate constant for the equation 2C2F4 --> C4F8 is 0.0438 M?1· s?1. We start with 0.142 mol C2F4 in a 5.00-liter container, with no C4F8 initially present. What will be the concentration
Calculate Keq for 3 moles of electron(s) in each half-reaction and a standard potential of 0.47 V.
A 13.0 k? resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them. Calculate the time constant of the circuit
A vitamin C containin sample was titrated to the blue colored endpoint with 19 ml of 0.12 M iodine solution. How many grams of Vitamin C were in the sample
In an RC series circuit, ? = 12.0 V, R = 2.02 M?, and C = 2.33 µF. Find the maximum charge that will appear on the capacitor during charging
A half-cell that consists of a copper wire in 1.00 M CuNO3 solution is connected by a salt bridge to a half cell containing a 1.00 M X(II) acetate solution and an electrode of metal X. The voltage o
The second-order dark fringe in a single-slit diffraction pattern is 1.40 mm from the center of the central maximum. calculate the wavelength of the incident light
Calculate the concentration of all the species, ions, and molecules, and the pH of the following solutions. All solutions have a total volume
Light of wavelength 650 nm falls on a 0.31 mm wide slit and forms a diffraction pattern on a screen 1.5 m away. Find the width of the central maximum
The total pressure of 75.0g Ar and 75.0g Rn is 2.30atm. What is the partial pressure (in atm) of Rn?
What molarities of HBrO (pKa 8.64) and KBrO are needed to make a buffer with a pH of 7.9 if the buffer strength is 0.35 M? What volumes are needed if both species are available in 5.0 M stock soluti
When a person is given intravenous fluid, the bag containing the fluid is typically held about 0.8 m above the person's body. what is the pressure in the person's blood
A solution made by adding solid sodium hypochlorite (NaClO) to enough water to make 2.00 L of solution has a pH of 10.50. Calculate the number of moles of NaClO that was added.
How would you make a buffer with a volume of 2.0 L, pH of 5.0 and a strength of 0.25 M using 5.0 M acetic acid stock solution (Ka = 1.8x10-5) and sodium acetate ( NaO2C2H3 available as a solid salt
A basketball of mass 3 kg and radius 0.20 m rolls without slipping down an incline of angle 30 degrees. Calculate the acceleration of the center of mass
A 2.3 µF capacitor and a 5.3 µF capacitor are connected in parallel across a 320 V potential difference. Calculate the total energy in joules stored in the capacitors
Sorbic acid is a weak monoprotic acid with Ka = 1.7x10-5. Its acid anion salt (potassium sorbate FW = 150 g/mole) is added to cheese to prevent mold. What is the pH of a solution that contains 4.93
A girl and her bicycle have a total mass of 40 kg. At the top of the hill her speed is 5.0 m/s. what is her speed at the bottom
a thin, uniform bar of length D = 1.28 m and mass M = 0.67 kg pivoted at the top. find the speed of the particle before impact
A concave mirror produces a virtual image that is three times as tall as the object. what is the radius of curvature of this mirror
A very hard rubber ball (m = 0.7 kg) is falling vertically at 9 m/s just before it bounces on the floor. find the average force exerted by the floor on the ball
A block of mass m = 6.68 kg is attached to a spring which is resting on a horizontal frictionless table. What is the maximum speed of the block
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 240 kg · m2, What is the new angular speed of the merry-go-round
A 665 kg elevator starts from rest. It moves upward for 3.22 s with constant acceleration until it reaches its cruising speed, 1.84 m/s