If 125 grams of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous magnesium sulfate will remain? Sample lab calculations. 1, curve 1) a pair of labyrinth crucibles (Fig. Heat to 250°C for 2 hours = 482°F Loses all waters of hydration. Yielding Anhydrous Magnesium Sulfate. crucible (Fig. NAME OF SALT Copper(II)sulfate; formula for hydrate CuSO4 . 0.4886 x 125 = 61.1 grams. 7 H 2O 5) What is the percent composition of water in the compound in problem 4b? Formula and structure: The chemical formula of magnesium sulfate is MgSO 4 and its molar mass is 120.366 g/mol. View Notes - ap_chemistry_9_15_amp_16_14_hydrates (1) from OCHEM 32O at University of Texas. If 125 grams of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous magnesium sulfate will remain? 2 was obtained. 17.70 GRAMS MASS OF HYDRATED SALT (3-2) composition of hydrates lab answers, LAB % COMPOSITION OF A HYDRATE.docx. If 125 grams of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous magnesium sulfate will remain? ... find the molar mass of the compound and then find the realistic mole value using the 125 grams. Hydrates: A hydrate is a … H2O MASS OF CRUCIBLE & LID. Hydrates 9_15&16_14 Hydrates How is a hydrate diferent … For the same purpose, instead of the conventional open. Preheat oven to 250°C plus. b) magnesium sulfate heptahydrate MgSO4 . percent water in a hydrate pre lab, CHEM 139 Lab Guide Page 2 Experiment 9 9.3 Experimental Set up your notebook as usual, recording the title, objective and procedure. 126.0 / 246.4 x 100 = 51.14% 6) If 125 grams of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous magnesium sulfate will remain? 107 RESULTS AND DISCUSSION From the investigation of the dehydration of magnesium sulphate heptahydrate under quasi isothermal-quasi isobaric conditions, curve 1 in Fig. Chemistry: Lab - % Composition of a Hydrate Introduction: Salt Compounds that contain water molecules attached are called hydrates, or hydrated salts. 51.168%. 5. What is the percent composition of water in the compound "magnesium sulfate heptahydrate"? Simply grind the MgSO4 • 7H2O = Magnesium Sulfate Heptahydrate (Epsom Salts) into a fine powder first, then spread it onto large baking trays for maximum surface area. 14.18 GRAMS. Have you found this worksheet to be useful in your teaching? Keep an eye on the level of the water bath, and add more water if the level gets too low. 100 – 51.14 = 48.86 % magnesium sulfate. If 125 grams of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous magnesium sulfate will remain? Any help would be greatly appreciated! 61.1 grams. At the end of the lab is an example page of how to do the calculations on page 22 after you have completed the data. 1. If 125g of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous magnesium sulfate will remain? 1, curve 4) was used in the DTA examination. MASS OF CRUCIBLE, LID, & HYDRATED SALT. Using a hot plate, heat about 400 mL of water to a rolling boil in a 600 mL or 800 mL beaker. 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