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A dark glass bottle of chemicals is found in cleaning out an old basement. Part of the label has been eaten away with age. Only the last part of the label is readable. From the legible portion, the word nitrate is found. A small amount of the unknown solid is dissolved in deionized water. Sodium chloride is added to the solution. A white precipitate forms which is insoluble in nitric acid. Analyze the data and determine what cation is present in the bottle (Na+, K+, Ca2+, Fe3+, NH4+). Assuming the bottle contains only one substance, what is the name and formula for the compound in the bottle. (Think creatively)
calculate the theoretical moles of NaOH that should be necessary to reach the equivalence point
What is the equilibrium partial pressure of N2O4? (atm) (b) Calculate the value of Kp for the reaction. (c) Calculate the value of Kc for the reaction.
Calcium reacts with iodine to form an ionic compound. If a sample of the compound contains 8.5 x 1019 iodide ions, how many calcium ions does it contain?
The GMC Sierra 15 Hybrid 2WD, a hybrid electric vehicle, has an EPA gas mileage rating of 23.0 mi/gal on the highway. How many kilometers can the Sierra 15 Hybrid 2WD travel on the amount of gasoline
A sealed balloon is filled with 2.20 L helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 190. torr and the temperature is -35°C
175g of water at 86.0 degrees C were added to a perfect calorimeter conataining 103 grams of water at 18.5 C. What is the final temperature of this water mixture?
Determine how many grams of methane is required to form 43.0 grams of CHCl3?
2 FeBr3(aq) + 3 Na2CO3(aq) Fe2(CO3)3(s) + 6 NaBr(aq) what is the net ionic eqation for this molecular equation.
calculate the solubility of Ca(OH)2 in a 0.469M Cacl2 solution at 31 Degrees, given the Ksp of Ca(OH)2 is 4.96*10^-6. give answer in milli molar units.
Estimate the thickness of the lipid bilayer in a biological membrane - Estimating the thickness of a membrane by using bond distance.
if a reation vessel contains .25 mol KO2 AND .15 mol H2O, what is the limiting reactant ? How many moles of oxygen can be formed ?
can you find out the name and formula of the unknown compound and determine the identity of the element?
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