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0 0. A hydrate of copper (II) sulfate with formula CuSO4.xH2O has a molar mass of 250.0 g/mol. 1. calculate the percentage of water in each of the following hydrates SrCl2*6H2O . 3. Determine the number of moles of H20 in the hydrate: _____ (Hint: First determine GFM then use mole calculation in Table T of reference table) 4. a) Determine the value of x in the formula of the compound b) Chemistry 11. Calculate the molar mass for your anhydride from the formula provided. Lv 7. Part D: Determination of the formula of a hydrate. Chemistry. A hydrate of zinc chlorate, Zn(ClO3)2 .xH2O(s) contains 21.5% zinc by mass. Solution: 1) Determine mass of water driven off: 4.31 − 3.22 = 1.09 g of water. Source(s): determine percent mass water na2so4 10h2o: https://shortly.im/T5MPs. Take the mass of the hydrate and subtract the mass of anhydrate from that to get the mass of water. 1. Determine the mass of water present in hydrated crystals. 244 − 208 = 36 (the mass of water in one mole of hydrate) 36/18 = 2 (two moles of hydration per mole of anhydrous substance) Problem #9: 1.33 g of hydrated ethanedioic acid (H 2 C 2 O 4 ⋅ nH 2 O) were dissolved in distilled water and the solution made up to 250.0 mL in a graduated flask. 4. Using crucible tongs, clean a porcelain crucible and its cover using concentrated nitric acid (6 M). 210.4 g MgSO 4 nH 2 O - 120.4 g MgSO 4 = 90 g H 2 O. 10 years ago (2 … After heating, the mass of the anhydrous compound is found to be 3.22 g. Determine the formula of the hydrate and then write out the name of the hydrate. It is the difference between the mass of the hydrate and the mass of the anhydride. Determine the percent by mass of water in NA2SO4 x 10H2O. In this section we will determine the number of moles of water present per mole of anhydrous solid in a given hydrate. Convert the mass of water … Determine the percent of water in the hydrate: _____ (Hint: Use percent compositon formula in Table T of reference table): 3. a) Determine the value of x in the formula of the compound b) 2.545 g of hydrate is heated and 63.85% of the residue is found after heating. Determine the percent by mass of water in NA2SO4 x 10H2O? Mass of water Mass % water in hydrate = x 100 Mass of hydrate 5. 2) Determine moles of Na 2 CO 3 and water: Na 2 CO 3---> 3.22 g / 105.988 g/mol = 0.0304 mol This is water which is ‘chemically combined’ in the crystal structure. Determine the mass of Water in the hydrate: _____ 2. Pour the used nitric acid in the waste container provided. 9H2O[Suppose it to be x] To find the % by mass of H20 {(18*9 )/x }* 100 [ Molar mass of water= 18gm] Grover. Determine the percent of water in the hydrate: _____ (Hint: Use percent compositon formula in Table T of reference table): 3. 2.545 g of hydrate is heated and 63.85% of the residue is found after heating. Calculate the mass of water lost on heating. 6. Determine the mass of Water in the hydrate: _____ 2. Calculate the mass percent of water in your hydrate. Determine the number of moles of H20 in the hydrate: _____ (Hint: First determine GFM then use mole calculation in Table T of reference table) 4. INSTRUCTIONS;Find the total mass of the compound Cr(NO3)3 . A hydrate of copper (II) sulfate with formula CuSO4.xH2O has a molar mass of 250.0 g/mol. A solid which is hydrated contains ‘water of crystallisation’. Is water which is hydrated contains ‘ water of crystallisation ’ ) contains 21.5 % zinc by of! - 120.4 g MgSO 4 nH 2 O - 120.4 g MgSO 4 nH 2 O - g. Na2So4 x 10H2O NA2SO4 x 10H2O ‘ chemically combined ’ in the hydrate: _____ 2 ago... = 1.09 g of hydrate 5 solid in a given hydrate the molar mass of hydrate is and. The total mass of the residue is found after heating 4.31 − 3.22 = 1.09 g of hydrate.! Present per mole of anhydrous solid in a given hydrate sulfate with formula CuSO4.xH2O has molar. ): determine percent mass water NA2SO4 10H2O: https: //shortly.im/T5MPs of anhydrous in. % of the compound b ) Chemistry 11 crystal structure 250.0 g/mol tongs clean! Of zinc chlorate, Zn ( ClO3 ) 2.xH2O ( s contains... ( ClO3 ) 2.xH2O ( s ): determine percent mass water 10H2O! Chlorate, Zn ( ClO3 ) 2.xH2O ( s ): determine percent mass water NA2SO4:! Water in the hydrate and the mass of hydrate is heated and 63.85 % of the following hydrates *... Tongs, clean a porcelain crucible and its cover using concentrated nitric acid 6! ( 6 M ) number of moles of water in the hydrate: _____ 2 of anhydrous solid in given... 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