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Nitroglycerine contains 60% as many carbon atoms as hydrogen atoms; three times as many oxygen atoms as nitrogen atoms; and the same number of carbon and nitrogen atoms. The number of moles of nitroglycerine in 1 g is 0.00441. What is the molecular formula of nitroglycerine?
The current population of earth is about 6.5 billion people .Each person on average exhales about 1 kg of CO2 per day. How does this compare with current fossil fuel emission? This amount is not included in inventories of CO2 emissions. Why?
It took 4.36 min with a current of 3.14 A to plate out all the silver from 0.146 L of a solution containing Ag+. What was the original concentration of Ag+ in the solution
A 3.00 g sample of a salt dissolves in 9.10 g of water to give a saturated solution at 25°C. What is the solubility (in g salt/100 g of H2O) of the salt?
Point at which proteins stop moving on a gel when they get a netcharge of zero.- Average the pK values from +1 to -1 charge.
What is the temperature on planet X IN UNITS of oC? Remember that there are 760 mm Hg per 1 atm.
how many gram of zinc metal required to regenrate copper
How many mL of Br2 (l) with a density of 3.12 g/mL must you dispense to have 1.56 mole (mol) of Br2 (l).
Why does fluorine always hae negative charge while other halogen do not always show negative charge? They become positive some times.
List possible manipulation errors that might contribute to the following errors in results
A heat lamp produces 27.0 watts of power at a wavelength of 7.0μm. How many photons are emitted per second? (1 watt=1 J/s)
Dry Cell batteries are habitually powered by the reaction below. Explain how many grams of ammonia would be produced if 7.32g of zinc reacted with 25.0mL of 3.02 M of NH4Cl
The complete combustion of liquid benzene is represented by the equation:
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