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1. write the full electron configuration for te following ca^2+, Ga^2+, S^2- a. draw pictures of the s orbital and p orbitals below b. which subshells are being filled in each of the following regions of the periodic table groups 1 and 2 the lanthanides and actinides c. how many valence electrons do the following atoms contain S, Ba, Ar d. arrange the following species in order of increasing radius Ca, Mg, Sr K, Ga, Ca e. Place the following elements in order of increasing ionization energy Ba, Sr, Ca Si, Na, Mg K, Ca, Rb f. Rank the following elements in order of increasing metallic character K, Ca, Rb
(b) calculate the moles of each gas before the reaction (c) determine the limiting reactant (d) calculate the moles of ammonia produced (e) calculate the partial pressures of all species in the system (f) the total pressure in the system
What is the pH of a solution containing 0.24 moles of ammonia and 17.8g of ammonium chloride, NH4Cl. Kb for ammonia is 1.8 times 10, What is the PH of a 0.085M solution of ammoniun chloride. Kb for ammonia is 1.8 times 10
If a solution is made by mixing 20.0 mL 0.3 M NaCH3COO with 30 mL 0.4 M CH3COOH, calculate the pH of the solution? For acetic acid, K = 1.76 x 10-5.
Place the following elements in order of decreasing atomic size: silicon, nitrogen, helium, potassium, magnesium, and carbon.
Choose the selection which lists the following substances in order of increasing boiling point (lowest boiling substance listed first)
SLIGHTLY LESS than 100 degrees Celsius, but the final boiling point was AT 100 degrees Celsius. Why should the boiling point rise as the distillation progresses?
A solid block of exactky 100.0 cm 3 has a mass of 153.6g. Determine its density. Will the block sink or float on water?
Treatment of 1.385 g of an unknown metal M with an excess of aqueous HCl evolved a gas that was found to have a volume of 382.6 mL at 20.0 degrees C and 755 mmHg pressure
The enthalpy change when 1 mol methane (CH4) is burned is -890 kJ. It takes 44.0 kJ to vaporize 1 mol water. What mass of methane must be burned to provide the heat needed to vaporize 1.00 g of water
Compare the temperature change as a pure liquid is converter to a solid at its freezing point with the temperature change as a solution is converted to a solid at its freezing
Technetium-99m is used for radioisotope-guided surgical biopsies of certain bone cancers. A patient must receive an injection of 28mCi of technetium-99m 6-12 hours before surgery.
How might your description of the flame color for NaCl change if your wire containing the salt slurry was contaminated with CuCl2
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