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Write the electron configuration of the atom in the third row of the periodic table that has the smallest E_{{rm{i}}4}.
Suppose that 24 g of each of the following substances is initially at 25.0^circ C. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
What is the osmotic pressure of a solution formed by dissolving 44.4mg of aspirin C9H8O4 in 0.355 L of water at 25 degress C.
The bromocresolgreen end point of the titration was reached after the addition of 30.00 mL of hydrochloric acid solution. Calculate the concentration of the acid solution.
What is the identity of the unknown, Dinitrogenmonoxide (N2O), laughing gas, is used by dentists as an anesthetic. If 2.86 molof gas occupies a 20.0 L tank at 23°C, what is the pressure (mmHg) in the tank in the dentist office?
When heated, lithium reacts with nitrogen to form lithium nitride. What is the percent yield of the reaction if 13.9 of Li is heated with 33.3 g of N2 and the actual yield of Li3n is 6.64 g?
An aqueous solution is 36.0 % by mass potassium bromide, KBr, and has a density of 1.33 g/mL. determine the mole fraction of potassium bromide in the solution?
Calculate the rate constant of a first order reaction having a half life of 7.19 x 10-5 seconds. Enter your answer to 3 sig figs. Determine the bimolecular (second order) rate constant of a reaction if the initial reagent concentration decreases f..
when 56.6g of calcium and 30.5g of nitrogen gas underfo a reaction that has a 93.0% yield, what mass g of calcium nitride forms.
Which of the following statements is true regarding chiral carbons with R configuration? a. plane polarized light is rotated clockwise b. plane polarized light is rotated counterclockwise
Oxalic acid, H2C2O4 has acid dissociation constants Ka1 = 5.9 x 102 and Ka2 = 6.4 x 105. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H2SO3.
A sample containing 0.187 g Cl- is dissolved in 50.0 mL water.How many moles of Cl- ion are in the solution?What is the molarity of Cl- ion in the solution.
How many grams of magnesium metal will react completely with 4.8 liters of 5.0 M HCl?
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