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What is the energy of a mole of photons that have a wavelength of 437 nm? (h = 6.626 × 10?³4 J • s and c = 3.00 × 108 m/s)
Compound J, C16H16Br2, is optically active. On treatment with strong base, compounds K and L (each C16H14) are formed; K and L each absorb only 2 equivalents of hydrogen when reduced over a Pd/C catalyst. Compound K reacts with ozone to give pheny..
copper in salt water near the discharge of a sewage treatment plantis determined by first seperating and concentrating
Which of the following states are Ture of the final temperature of a system where equal masses of Aluminum( Cal=0.900 J/g Celsius, Ti=75 Celsius and water (ch2o=4.284j/gcel, Ti=25 cel) are placed in contact? assume no energy losses to the surround..
How many standard units are generally used to describe the mechanics of nature? What does density describe? In general, when a derived unit becomes complicated (involves too many standard units), what is done?
In a cup calorimeter experiment, a student found that 10.9 kJ of energy was consumed by the vaporization of a 56.0 g sample of N2. Use the student's experimental data to calculate a value for ΔHvap for N2.
How many cells are on the plate. What fraction of the cell surface is occupied by receptors versus normal phospholipids
If 0.02 moles of PbCl2 is added to 500 dm3 of a 0.01 M salt water solution, what is the Qs value and will PbCl2 precipitate?Ksp = 1.6 x 10-5.
1) Write down the balanced chemical equation for this reaction. 2) Define the type/types of the reaction; assign the oxidation number of Manganese in potassium permanganate and manganese (II) sulfate. Also, offer an explanation for the color chang..
Determine the vibrational force constant for this HCl molecule. The atomic mass of 1H is 1.0078 amu, and the atomic mass of 35Cl is 34.969 amu.
Completely neutralizes stomach acid (HCl, .10M) How much carbon dioxide is made at STP conditions (37C, 767 torr, 100% humid) by ingesting one 1.834 gram tablet
a student immersed a 8.27g of unknown metal sample in a graduated cylinder containing 1ml of water. she noted the water
calculate the mass kg of the solute c4h8o and the volume ml of the solvent c6h6 that should be combined to generate
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