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Compare and contrast the accuracy and precision of at least three types of measurements used in your life
The element copper has an atomic weight of 63.5 and consists of two stable isotopes copper-63 and copper-65. The isotope copper-63 has an atomic mass of 62.9 amu and a percent natural abundance of 69.1 %.
sulphur dioxide so2 is an unwelcome result of burning soft coal in power plants. some of the so2 ends up as sulfuric
Identify whether or not solutions of these salts will form an acidic or basic or neutral solutions when added to water.
Calculate the amount of heat (calories) absorbed when 50.0g of water at 20deg. Celsius spreads over your skin and warms to body temperature, 37deg. celsius.
For which of the following species is resonance an important property: HONO, HONO2, N3-, NO2-, NO2
What is the final temperature, (in oC), after a 26.0 gram piece of ice at 0oC is placed into a styrofoam cup with 119.0 grams of water initially at 79.0oC? Assume no loss or gain of heat from the surroundings.
at 25 c and 1.0 atm pressure, it is found that 2.24 L of gas weighs 1.56g. The molar mass of the gas is?
This half cell is connected to a SHE half-cell. The measured potential for this cell is 0.476 V at 25 degree C. What is the experimental value of the solubility constant for silver oxalate
The rotation constant for H2 is 60.80 cm-1 the harmonic frequency is 4395.3 cm-1 and the anharmonicity constant is 117.90 cm-1. calculate the frequency at which the Q branch first overtone will be found.
Natural gas is a mixture of many substances, primarily CH4,C2H6,C3H8 and C4H10. Assuming that the total pressure of the gases is 1.34 atm and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each g..
Compare and contrast solid-phase DNA synthesis with enzyme-catalyzed DNA synthesis. Please separately describe the similarities and differences between the two.
Calculate the molar solubility of AgCl in a 1.0 M NH3 solution. The equilibrium constant K for the overall reaction is the product of the equilibrium constants of the individual reactions where Ksp = 1.6 X 10-10 and Kf = 1.5 X 107.
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