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The complex ion [CoBr6]3- is a high-spin complex and absorbs light at a wavelength greater than 7.70×102nm . How many unpaired electrons will be present in the complex?
Calculate the pH of a solution formed by mixing 65-mL of 0.22M NaHCO3 with 75-mL of 0.15M Na2CO3.
In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) + 2 NaBr(aq) PbBr2(s) + 2 NaNO3(aq)
what is the balanced molecular equation for the reaction between lithium phosphate
When a 8.26-g sample of gaseous hydrogen bromide dissolves in 36.2 g of water in a coffee-cup calorimeter the temperature rises from 25.00C to 82.14C. Calculate H in kJ/mol HBr for the solution process.
Calculate the volume of each of the following gas samples at STP 8.1 mol c2h2, .255 mole ci,0440 mol co2, 24.1 mol n2o in L
Consider the reaction with the rate law, Rate = k[BrO3-][Br-][H+]2 By what factor does the rate change if the concentration of BrO3- is doubled and that of Br- is doubled? Just put in the number as a whole number or fraction.
The Ksp of AgCrO4 is 1.9 x 10^-12. Calculate the molar solubility (in mol/L) of Ag2CrO4 in 0.1 M AgNO3.
The vapor pressure of the water at 16 degrees C is 14 mmHg; CaCO3(s)-->CaO(s)+CO2(g): a) what is the partial pressure of the CO2 gas? b) How many moles of CO2 gas were in the CO2 gas sample
What volume of 3.50M H2S is required to react with excess O2 to produce enough NH3 to fill a cylinder that is 50ft long and has a diameter of 13 ft at a pressure of 450 torr and 20°F
When most Fe3+ salts are dissolved in dilute nitric acid, the solution is often yellow to orange-yellow in color. Why could you not visually detect these colors in the Fe(NO3)3 stock solution
Find the expected freezing point of a water solution that contains 268 g of aluminum nitrate, Al(NO3)3, in 8.50 kg of water.
Determine how to make the following dilutions for aqueous Cu(NO3)2 from 1.0M stock : 0.50M. The 3 and 2 are both in subscript.
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