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A high energy pulsed laser emits 3.50 nano second-long pulse of average power 1.70 × 1011 W. The beam is cylindrical with 2.20 mm in radius. Determine the rms value of the B-field?
The net potential energy EN between two adjacent ions is sometimes represented by the expression: EN = -(C/r) + D exp(-r/p) in which r is the interionic separation and C, D, and p are constants whose values depend on the specific material.
what is the change in pH after addition of 10.0mL of 1.0M sodium hydroxide to 90.0mL oof a 1.0M NH3/1.0M NH4+ buffer? (Kb for ammonia is 1.8 X 10-5)
you have a mixture of oxalic acidh2c2o4 and another solid thatdoes not react with sodium hydroxide. if 29.58ml of
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps.
a gas occupying a volume of 940. ml at a pressure of 0.970 atm is allowed to expand at constant temperature until its
Some solid remained in the beaker after stirring with HCl. You washed the filter paper with ketone, which caught on fire and the filter paper was scorched
An animal cell assumes its normal volume when it is placed in a solution with a total electrolyte molarity of 0.3 M. If the cell is placed in a solution with a total molarity of 0.6 M, then what happens
Question- Give the name and formula of the compound whose molecules consist of two iodine atoms and seven oxygen atoms.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 73.2 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution.
Water in the sample extracts into the methanol, which is then analyzed. If GC analysis of the methanol yields a peak height of 13.66, what is the % w/w water in the antibotic?
A 0.692 g sample of glucose, C6H12O6, is burned in a constant volume, bomb calorimeter. The temperature change is measured at 1.80 degrees C.
In a separate experiment, the molar mass of the compound was found to be 70.13 g/mol. Determine the empirical formula and the molecular formula of the hydrocarb
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