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Question: Two carbon rods are placed in a solution of H2SO4. A current of 12A is passed between the two rods for 2h 14min. This results in the passage of an amount of charge that releases 1.008g of H2. How much charge is transported in this time?
Calculate the transmittance of 162-nm radiation through a sample of ethylene gas at 25 oC and 10 torr for a cell length of (a) 1.0 cm; (b) 10 cm.
A flask contains 22.5 g of an unknown liquid, initially at 14.0oC. After 2.34 kJ of heat are added to the liquid, its final temperature is 56.3oC. What is the specific heat of the liquid
A solution is prepared by dissolving 396 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Write down the formulas relating (a) frequency and wavelength, (b) Wavelength and momentum, and (c) energy and frequency of a photon.
Problem- How many degrees of temperature rise will occur when a 25.0 g block of aluminum absorbs 6.75 kJ of heat. The specific heat of Al is 0.900 J/g*C
Pure metals are commonly recovered from sulfide ores by successive processes of roasting in air (oxidation), dissolution in sulfuric acid and electrolysis (reduction). Consider the starting ore mineral sphalerite (ZnS). Write balanced chemical rea..
Question enthalpy and entropy values are given and were asked to find boiling point of mercury
Problem- In terms of oxidation-reduction, what happens to the starting chromium ion of Cr+6 when it becomes Cr+3. Is this true for all oxidizing agents
It takes 254kj/mol to eject electron for a certain metal surface. What is the longest wavelength of light that can be used to eject electrons from the surface of this metal via the photoelectric effect.
What is the effect of a pressure change from 760 torr to 202 kPa, and the temperature changes from 37 degrees Celsius to 155K on the volume of 1 mol of an ideal gas
While building a character table struggling with remembering explain how to find the irreducible representation for Rz. Explain how to determine it for x, y and z but not for Rz, Rx or Ry
The photon was emitted sommewhere in deep space, long ago by a helium atom undergoing a downward transition from 3p to 2s state. Determine the wavelength, energy and frequency of this photon.
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