Homework Answers
The weight of BaSO4 = 2.22 - 1.58 = 0.64 g
Moles of BaSO4 = 0.64 g/(233.4 g/mol) = 2.742*10-3 mol
Moels of BaCl2 = 2.742*10-3 mol
Grams of BaCl2 = 2.742*10-3 mol * 208 g/mol = 0.571 g
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After the second heating a sample of BaSO, had a mass of 2.22 . If the...
After the second heating a sample of BaSO, had a mass of 2.22 g. If the...
After the second heating a sample of BaSO, had a mass of 2.22 g. If the filter paper weighed 1.58 grams what is the weight of the dry BaSO? Show work. a. Molar mass of Baso 233-4 almol b. Molar mass of BaCl2_ 208.23 al mol c. Moles of BaSO4 collected 233-4 d. Moles of BaCl2 in the original solution e. Grams of BaCl, in the original solution
* volume of unknown sample (mL) 40.0 mL + mass of filter paper (9) 0.3159 monday...
* volume of unknown sample (mL) 40.0 mL + mass of filter paper (9) 0.3159 monday mass of filter paper + solid Ba3(PO4)2(g) 49.2939 glassi subtract mass filter paper mass of solid Ba3(PO4)2 (g) from Ba P) a to gethasst Calculation: 1239-0.815:0.1949 0.924g Periodictable molar mass of Ba3(PO4)2 (g/mol) Calculation: 001.92.3782 g/mol comm o go to sus Calculation: m moles of Ba3(PO4)2 mass onday m s 1.4 601.923727 monday 1.535 xioma moles of BaCl2 aquatia 3 to! ratio. / Calculation:...
Metal Sulfate Hydrate lab (12 points) 4) An unknown metal sulfate hydrate (MSO XHO) sample with...
Metal Sulfate Hydrate lab (12 points) 4) An unknown metal sulfate hydrate (MSO XHO) sample with the recorded mass below is dissolved in water, and the sulfate ions from the sample precipitated with Ba2+ ions as BaSO4. A pre-massed filter paper is then used to collect the solid BaSO4. Experimental data was recorded below following same procedure in MSH lab. 0.6939 96.06 g/mol Molar mass of SO42- PARTA Mass of unknown metal sulfate hydrate (MSH) Mass of unknown sample sulfate...
A hydrate of Cobalt(ii)Chloride had mass of 166.04g before heating. After heating, the anhydrous CoCl2 weighed...
A hydrate of Cobalt(ii)Chloride had mass of 166.04g before heating. After heating, the anhydrous CoCl2 weighed 130.9g. - what is the mass of the water that was driven off? - how many moles of water were driven off? - how many moles of anhydrous CoCl2 remain? - what is the hydration number (moles of water per mole compound)?
pl#3 QUESTION 1 A mixture of 0.810g of BaCl 2.2H 2O and Na 2SO 4 produces...
pl#3 QUESTION 1 A mixture of 0.810g of BaCl 2.2H 2O and Na 2SO 4 produces 0.466g of BaSO 4, the limiting reactant in the reaction is Na 2SO 4. Calculate the percent of BaCl 2.2H 2O and Na 2SO 4 in the original mixture. QUESTION 2 Because of the finely divided nature of the Ba 3(PO 4) 2 precipitate, some of it passes through the filter and is not collected. How does this loss of precipitate affect the reported...
A student is given a sample of a calcium sulfate hydrate. He places the sample in...
A student is given a sample of a calcium sulfate hydrate. He places the sample in a dry, covered crucible and weighs it. The total mass (crucible, cover, and hydrate) is 19.39219.392 g. The crucible and cover together had previously weighed 17.98717.987 g. He then heats the crucible to redness for 10 minutes with the cover slightly ajar. After the crucible cools, he weighs the crucible and its contents; the mass is now 19.09819.098 g, due to the loss of...
EXPERIMENTAL PROCEDURE 1. Using a 50.0 mL graduated cylinder, obtain 40.0 mL of the unknown water...
EXPERIMENTAL PROCEDURE 1. Using a 50.0 mL graduated cylinder, obtain 40.0 mL of the unknown water sample. This ample contains an unknown amount of BaCh, Pour this into a 100 mL beaker 2. Add 20.0 ml. of the NasPO solution provided to your unknown solution in the 100 ml, beaker The amount of NaPOs you are adding in the 20.0 ml, of solution is more than enough to provide for complete reaction of the unknown BaClh, Consequently, you can be...
Unknown sample no. C Trial I Trial 2 1. Mass of 2. Mass of generator + sample before reaction () ...
help
with remaining calculations please
Unknown sample no. C Trial I Trial 2 1. Mass of 2. Mass of generator + sample before reaction () 3. Inst s approval of apparatus C. Determination of Vol ume, Temperature, and Pressure of the Carbon Dioxide Gas 1. Initial reading of volume of water in CO.-collecting graduated cylinder (mL) 2. Final reading of volume of water in CO-collecting graduated cylinder (mL) 3. Volume of CO,(g) collected (L) 4. Temperature of water C) 5....
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in...
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in a dry, covered crucible and obtains a mass of 24.747 g for the crucible, cover, and sample. Earlier she had found that the crucible and cover weighed 23.599 g. She then heats the crucible to drive off the water of hydration, keeping the crucible at red heat for about 10 minutes with the cover slightly ajar. She then lets the crucible cool, and finds...
Experiment 8 Conservation of Mass kussion: action: 170 Mole wt. g/mol Aqual the combined masses of...
Experiment 8 Conservation of Mass kussion: action: 170 Mole wt. g/mol Aqual the combined masses of all the reactants that were initially present. Furthermore, we fter any chemical reaction, the total mass of new products and any left over reactants) will a predict the mass of each product that will be formed if we know the molecular weight or the formula (from which we can predict the molecular weight). As an example, consider the dissolve the two substances in water,...
After the second heating a sample of BaSO, had a mass of 2.22 g. If the filter paper weighed 1.58 grams what is the weight of the dry BaSO? Show work. a. Molar mass of Baso 233-4 almol b. Molar mass of BaCl2_ 208.23 al mol c. Moles of BaSO4 collected 233-4 d. Moles of BaCl2 in the original solution e. Grams of BaCl, in the original solution
* volume of unknown sample (mL) 40.0 mL + mass of filter paper (9) 0.3159 monday mass of filter paper + solid Ba3(PO4)2(g) 49.2939 glassi subtract mass filter paper mass of solid Ba3(PO4)2 (g) from Ba P) a to gethasst Calculation: 1239-0.815:0.1949 0.924g Periodictable molar mass of Ba3(PO4)2 (g/mol) Calculation: 001.92.3782 g/mol comm o go to sus Calculation: m moles of Ba3(PO4)2 mass onday m s 1.4 601.923727 monday 1.535 xioma moles of BaCl2 aquatia 3 to! ratio. / Calculation:...
Metal Sulfate Hydrate lab (12 points) 4) An unknown metal sulfate hydrate (MSO XHO) sample with the recorded mass below is dissolved in water, and the sulfate ions from the sample precipitated with Ba2+ ions as BaSO4. A pre-massed filter paper is then used to collect the solid BaSO4. Experimental data was recorded below following same procedure in MSH lab. 0.6939 96.06 g/mol Molar mass of SO42- PARTA Mass of unknown metal sulfate hydrate (MSH) Mass of unknown sample sulfate...
EXPERIMENTAL PROCEDURE 1. Using a 50.0 mL graduated cylinder, obtain 40.0 mL of the unknown water sample. This ample contains an unknown amount of BaCh, Pour this into a 100 mL beaker 2. Add 20.0 ml. of the NasPO solution provided to your unknown solution in the 100 ml, beaker The amount of NaPOs you are adding in the 20.0 ml, of solution is more than enough to provide for complete reaction of the unknown BaClh, Consequently, you can be...
help
with remaining calculations please
Unknown sample no. C Trial I Trial 2 1. Mass of 2. Mass of generator + sample before reaction () 3. Inst s approval of apparatus C. Determination of Vol ume, Temperature, and Pressure of the Carbon Dioxide Gas 1. Initial reading of volume of water in CO.-collecting graduated cylinder (mL) 2. Final reading of volume of water in CO-collecting graduated cylinder (mL) 3. Volume of CO,(g) collected (L) 4. Temperature of water C) 5....
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in a dry, covered crucible and obtains a mass of 24.747 g for the crucible, cover, and sample. Earlier she had found that the crucible and cover weighed 23.599 g. She then heats the crucible to drive off the water of hydration, keeping the crucible at red heat for about 10 minutes with the cover slightly ajar. She then lets the crucible cool, and finds...
Experiment 8 Conservation of Mass kussion: action: 170 Mole wt. g/mol Aqual the combined masses of all the reactants that were initially present. Furthermore, we fter any chemical reaction, the total mass of new products and any left over reactants) will a predict the mass of each product that will be formed if we know the molecular weight or the formula (from which we can predict the molecular weight). As an example, consider the dissolve the two substances in water,...
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