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A first-order reaction has a rate constant of 0.33 y-1. How many years does it take for the concentration of the reactant to decrease from 0.13 M to 0.088 M?
If 141 mL of wet H2 is collected over water at 24°C and a ba?rometric pressure of 738 torr, how many grams of Zn have been consumed.
Compute the change in temperature when 1.8 g of sodium chloride is dissolved in 300.0 mL of water initially at 20C. The heat capacity of water is 4.184 J/mL/K.
What factor determines whether a carbon atom in a compound is chiral? Draw the Lewis structure for each of the following functional groups: alcohol, ether, aldehyde, ketone, carboxylic acid, ester, amine.
if a sample of gas at 25.2 C has a volume of 536 mL at 637 torr, what will its volume be if the pressure is increased to 712 torr.
A solution is prepared by mixing 63.0 mL of 5.00 M HCl and 20.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution.
What mass of NaCl must be dissolved in 65.0 grams of water to lower the freezing point by 7.50 °C? The freezing point depression constant, Kfp, for water is -1.86 °C/m.
A laser pulse with wavelength 555nm contains 4.40mJ of energy. How many photons are in the laser pulse.
Important information about Chair Conformation, Circle the least stable conformation as well.
The excess of acid needed 16ml of 0.25M Naoh for neutralization. then Calculate the percentage of calcium carbonate and magnesium carbonate?
A compound containing only carbon, hydrogen, and oxygen is subjected to elemental analysis. Upon complete combustion, a 0.9294-g sample of the compound
How much heat (in kJ) is evolved in converting 1.20 mol of steam at 134.0°C to ice at -55.0°C.
The density of germanium is 5.325 g/cm3. If you made a 5.3-nm diameter quantum dot of germanium, how many Ge atoms would it contain? Assume the dot is spherical.
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