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The diameter of a neutral helium atom is about 171 pm. Suppose we could line up helium atoms side by side in contact with one another. Approximately how many atoms would it take to make the distance 1 cm from end to end. Round to the nearest whole number, do not include units or commas. do not use scientific notation.
Tetrahedral complexes of Co2+ are quite common. Use a d-orbital splitting diagram to rationalize the stability of Co2+ tetrahedral complex ions.
which of these ionic solids would have the largest lattice energy?a. naclb. nafc. cabr2d. csie.
What mass of sucrose should be combined with 455 g of water to make a solution with an osmotic pressure of 8.75 atm at 320 K?
A.E. Dyer supplied 45.9 cal of heat energy to a 156-g piece of aluminum block that was kept at 28 degree C. What is the final temperature of the aluminum block?
When 0.0200 mol gaseous NH3 and 0.0180 mol gaseous O2 are placed in a 1.00 L container at a certain temperature, the N2 concentration at equilibrium is 2.20Ã-10-3 M. Calculate Keq for the reaction at this temperature.
Sodium hypochlorite is a common ingredient in household bleach. What is the pH of this bleach if it contains 5% NaOCl by mass? (pKa of HOCl = 7.46)
If 37.5 mL of 0.274 M HCl solution is needed to neutralize an aqueous solution of calcium hydroxide, how manygrams of calcium hydroxide must be in the solution prior to the initiation of the titration experiment
Consider the combustion of ethylene, . If the concentration of is decreasing at the rate of 4.2×10?2 , what is the rate of change in the concentration of
The volume of HI(aq) required to reach the equivalence point : (1c) The pH at the half-neutralization point. (1d)The pH at the equivalence point.
What is the [H3O+] and the pH of a buffer that consists of 0.21 M HNO2 and 0.57 M KNO2? (Ka of HNO2 = 7.1*10^-4) Define What is the component concentraion ratio
Calculate the change in molar entropy when 2.00 miles of ozone are compressed isothermally to one quarter of its original volume. Treat ozone as an ideal gas.
it is given that the bond length of hi 161pm.nbspcompute the moment of inertia of the molecule in kg m2. and also
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