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State the group to which each of the following elements belongs: sodium, magnesium, chlorine and neon.
Calculate the wavelength of the absorption maximum for a metal complex ion that has a crystal field splitting energy of 279 kJ/mol. The final answer should be in nm.
what is the chemical formula for potassium
At high temperature, ammonia reduces copper(II) oxide to the free metal: 2NH3(g) + 6CuO(s) => N2(g) + 3Cu2O(s) + 3H2O(g) Step 2: 2NH3(g) + 3Cu2O(s) => N2(g) + 6Cu(s) + 3H2O(g)
A sample of 0.836 gm of unknown compound containing barium ions ( Ba2+) is dissolved in water and treated with an excess of Na2SO4. If the mass of BaSo4 precipitate formed 0.7403 gm, What is the percent by mass of Ba in the original unknown compou..
A sample of hydrated Barium Chloride, BCl2 x H2O weighed 428.3mg before and 356.2mg after heating as BaCl2. What is the average number of water of hydration per molecules of BaCl2?(what is the X in BaCl2 X H20?
an unknown gas effuses at a rate that is only 0.468 times that of o2 at the same temperature. what is the molar mass of
Write out and balance the reaction for the decomposition of calcium chloride in water. Calculate the enthalpy of the reaction.
If the nursing home provides an asphalt surface in areas where oxygen could potentially leak, will it be in compliance with the workplace regulation.
Empirical formula and molecular formula, 2) Two substances Q and R each have the elemental composition C = 60% h=13.3% 0=26.7% by mass 0.60 grams of each substance occupied a volume of 0.336 liters at 137 Celcius and standard pressure
A buffer solution is prepared by adding 5.50 g of ammonium chloride and .0188 mol of ammonia to enough water to make 155 mL of solution . What is the pH of the buffer?
Discuss the various types of radiation that a safety professional might encounter and some methods for protecting oneself against it.
consider the decomposition of ammonium chloride at a certain temperature.nh4cls nh3g hclgcalculate the equilibrium
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