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Write the shorthand electronic configuration, the # of unpaired electrons, and whether it is paramagnetic or diamagnetic for the following elements or ions.
a. B
b. Zr
c. Ag+
d. Se2-
Which ion or element has the smallest radius for the following groups?
a. Li, Li+, or Li-
b. Ge, As, or Se
c. Br-, Cl-, F-, or I-
chromium metal reacts with 3.807 g of iodine. Using the conservation of mass law, predict the mass of product.
If an aqueous solution of Co(NO3)2 has a molar absorptivity of 5.10 L/mol.cm at 505 nm. What will be the absorbance of a 0.075 M solution
How many grams of ammonium chloride and how many milliliters 3.0 M sodium hydroxide should be added to 200 ml water and diluted to 500 ml to prepare a bufffer
When 1.0 g of gasoline burns, 11500 calories of energy are given off. If the density of gasoline is 0.74 g/mL, how many kilocalories of energy are obtained from 1.1 gallons of gasoline?
A 27.75g piece of iron and a 26.70g piece of gold at 100C were dropped into 800mL of water at 24.05C. The molar heat capacities of iron and gold are 25.19J/molC and 25.41J/molC, respectively. What is the final temperature of the water and pieces o..
Between which of the following energy levels of the hydrogen atom is the energy difference the greatest
What is the concentration (molarity) of chloride ions after combining 49.7 mL of 0.383 M barium chloride with 14.1 mL of 0.590 M cobalt(II) chloride
Consider a hypothetical reaction in which A and B are reactants and C and D are products. if 15grams of A completely reacts with 12grams of B to produce 14grams of C, how many grams of D will be produced.
Calculate the magnitude of the current in amperes if the number of moles of hydrogen gas produced is 4.80×10-4 moles.
When you breathe the following reaction will take place: C6H12O6 (s) + 6O2 (g) --> 6CO2 (g) + 6H2O(g), how many moles of glucose are needed to produce 100.0 g of water?
A solution of butanoic acid is prepared from 0.067 mol of butanoic acid in sufficient water to give 1.0 L of solution and has a pH of 2.72. Determine the Ka for the butanoic acid solution
If 153 mL of wet H2 is collected over water at 24°C and a barometric pressure of 729 torr, how many grams of Zn have been consumed?(The vapor pressure of water is 22.38 torr at 24°C.)
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