An empty test tube weighs 15.923 grams. Then, MgCl2•6H2O is added into the test tube. After...
An empty test tube weighs 15.923 grams. Then, MgCl2•6H2O is added into the test tube. After the addition of MgCl2•6H2O, the test tube weighs 16.619 grams. Then, water is added into the test tube. Now, the test tube weighs 28.216 grams. Calculate:
1). The moles of MgCl2 added to the test tube
2). The mass of water in the MgCl2•6H2O added to the test tube.
3). The mass of water added to the test tube.
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An empty test tube weighs 15.923 grams. Then,
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TI Mass of empty tube after initial heating +8rotto 1.536 Mass of tube plus sample after...
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Please provide correct work & answers to the following, thank you!! .A student observed that when heated his...
Please provide correct work & answers to the following, thank
you!!
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You need to weigh your own large Pyrex test tube and know the empty mass, mass with KCIO3 mixture bet heating; mass with KCIO, mixture and catalyst and mass of all of the above after heating. To weigh the test tube, place it in an empty beaker to keep it upright. You may tare the weight of the bea you need to know the weight of the test tube for your calculations. Procedures: Weigh your clean, dry empty Pyrex test...
You placed a sample of a hydrate of calcium chloride (CaCl2) in a weighed test tube, and weighed the filled test tube Then you heated it until no more water was evolved. After cooling, you weighed the test tube again. Mass of empty tube (g) 13.89 Mass of filled tube before heating (g) 18.55 Mass after cooling (g) 16.9 Calculate the following: Moles of anhydrous CaC12
TI Mass of empty tube after initial heating +8rotto 1.536 Mass of tube plus sample after heating 18.0719 15.694 9 19.6079 17.237 9 19.4769_13.0829 110 mL 120 mL 24.0°C 24.1°C 740.43 torr Volume of water displaced Water temperature (°C) Barometric pressure CALCULATIONS Show your calculations in the space provided on the next page. Molar Volume of Oxygen: Mass of oxygen generated Moles of O, generated Vapor pressure of water Pressure of Temperature of O, (K) Calculated volume of O, sample...
Please provide correct work & answers to the following, thank
you!!
.A student observed that when heated his sample produced condensation on the upper walls of his test tube and changed color. When the sample was added to water it produce a solution with a color very similar to that of the original salt. Explain these observations 2. A student gets a measurement of 30.112 grams when he weighs a dry empty crucible and cover. He then adds an unknown...
An empty 149 mL flask weighs 68.322 g before a sample of volatile liquid is added. The flask is then placed In a hot (95.0 degree C) water bath; the barometric pressure is 740 mm Hg. The liquid vaporizes and the gas fills the flask. After cooling the flask and condensed liquid together weigh 68.697 g. What is the molar mass of the volatile liquid? 9.73g/mol 78.09 g/mol 4.80 times 10^-3 g/mol 49.69/mol 44.01 g/mol
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