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What is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n=5?
Calculate the boiling point when 752 grams of ethylene glycol, C2H6O2, is dissolved in 3 kilograms of water.
conversion of 0.95g of liquid water to steam at 100 clesius requires 2.1 kJ of heat. calculate the molar enthalpy of evaporation of water at 100 celsius
density measurements can be used to analyze mixtures. for example the density of solid sand without air spaces is about
Calculate the pH after 0.15 mol of NaOH is added to 1.00 L of 0.60 M HF and 1.01 M KF.
Calculate the amount of heat liberated (in kJ) from 437 g of mercury when it cools from 61.0°C to 12.0°C.
A mixture is made by mixing 40.7 mL 0.000200 M HCl with 38.3 mL of 0.000180 M NaOH. Based upon these values, the mixture's pH will be
if 625g of fe3o4 is produced in the reaction, how many molecules of hydrogen are produced at the same time?
For a solution containing 0.0060 M calcium nitrate and 0.057 M nitric acid, calculate the activity of the calcium ion.
a metal container holding xenon gas xe has a pressure of 458 torr at 20 degrees celcius. at what temperature will the
If a buffer is made up to be 1.0M in acetic acid and 1.0 M in sodium acetate, predict how much acid will be required to change the pH of 100mL of the buffer by 0.1 pH units.
How many moles of NaOH were required to neutralize the amount of KHP in Part b. d) What is the concentration of the NaOH solution?
how many grams of water can be cooled from 45 to 18 by the evaporation of 62 of water? the heat of vaporization of
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