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An electron in the n = 7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 397nm.
What is the value of n for the level to which the electron relaxed?
Explain Pressure of dry butane gas, Chemistry lab write up and I have to determine the pressure of the dry butane gas.
An acid solution is 0.120 M in HCl and 0.210 M in H2SO4.What volume of a 0.160 M KOH solution would have to be added to 550.0 mL of the acidic solution to neutralize completely all of the acid.
Inhibitors helped to elucidate the electron transport chain. For the conditions below what would happen i) if rotenone were added to a suspension of respiring mitochondria or, ii) if cyanide were added.
The water level in a graduated cylinder initially at 217 rises to 286 after a piece of lead is submerged. What is the mass in grams of the lead?
What is the ratio of the enantiomeric products? b) What name is given to a mixture of enantiomers present in the ratio determined in part (a)?
What volume of hydrogen gas is produced when 83.8 g of iron reacts completely according to the following reaction at 25oC and 1 atm.
Draw the mechanism of the diel-alder reaction of 1,3-butadiene with maleic anhydride. Does the product have
What was the Ka value calculated by the student if the pH of the solution was 2.60? Express your answer numerically using two significant figures
A solution is made witmlh 20.2ml of CH3OH ( density= 0.782g/ml), dissolved in 100.ml of water (density = 1.00 g/ml). Calculate the concentration in the units of:
Dissolve the compound in the better solvent at just above freezing point and then add boiling portions of the poor solvent in 5mL increments until recrystallization is complete
The cup is a volume widely used by cooks in the U.S. One cup is equivalent to 225 cm3. If 1 cup of olive oil has a mass of 205 g, what is the density of olive oil in g/cm3?
A fire occurred in a storage room where a steel cylinder of oxygen-enriched air was kept. The pressure of the gas in the cylinder was 300 atm at 20 C.
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