Chemistry, 19.01.2021 21:00 brandon436
Your chemical storage room has a large bottle of a chemical with part of the label missing . From the rest of the label, you deduce it must contain an alkali metal sulfate. The question is, which one? The key is to deter mine its molar mass. You recall that barium sulfate is insoluble , so you undertake a gravimetric analysis to find out the unknown alkali metal You weigh out 0.872 g of the compound, dissolve it in waterand add bar ium chloride solution until no more precipitate is formed. You filter off and dry the precipitate. The mass of the precipitate is 1.167 g. If the unknown alkali metal is represented by the symbol X, then the double displacement reaction is: X 2 SO 4 (aq)+BaCl 2 (aq) BaSO 4 (s)+2* Cl(aq)
Answers: 2
Chemistry, 22.06.2019 04:00
Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.
Answers: 1
Chemistry, 22.06.2019 16:50
Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m
Answers: 3
Chemistry, 23.06.2019 05:00
1. true or false: minerals are inorganic. true false 2. inorganic means that something has never been found alive 3. halite is another name for and is a mineral with a cubic crystal pattern. table salt rock salt
Answers: 1
Your chemical storage room has a large bottle of a chemical with part of the label missing . From th...
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