2. A hydrate weighed 8.456 g before heating and after heating the anyhydrous compound weighed 5.725 g. Calculate the percent water by mass in the hydrate and using the chart in the laboratory procedure identify the hydrate. % water Hydrate 3. Using the table on the previous page, calculate the mass loss expected when 25.527 g of CaSO4 2H20 are heated. 30

2. A hydrate weighed 8.456 g before heating and after heating the anyhydrous compound weighed 5.725 g. Calculate the percent water by mass in the hydrate and using the chart in the laboratory procedure identify the hydrate. % water Hydrate 3. Using the table on the previous page, calculate the mass loss expected when 25.527 g of CaSO4 2H20 are heated. 30

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

1.0 chem q
Two solutions are combined: 611 mL of 139 mM MgSO4 and 566 mL of 174.5 mM NH4OH. How many moles of Mg(OH)2 are formed during the reaction? Report your answer in scientific notation (1.23e4). Remember to identify the limiting reactant.
Dteremine the limiting reaganet (SHOW THE calculations for determinig the limiting reagent ) and calculate the theoretical mass of PbI2 by using limiting reagent. show your calculations. Balanced Equation: Pb(NO3)2 (aq) + 2KCL(aq) ---> 2KNO3(aq) + PbI2(s) No of moles of Pb(NO3)2 = 0.003 No of moles of KI = 0.007
What is the theoretical yield of water (in grams) that can be isolated from the reaction of 15.0 g of H2 and 80.0 g of O2? Molec. Wt. H2 = 2.016 g/mol , Molec Wt O2 = 32.00 g / mol, Molec Wt. H2O = 18.02 g/mol O2 + 2H2 → 2H2O
Explain why the mass of the KMnO4 used has to be calculated from a concentration and molar mass instead of being weighed on a balance.
How many moles of CH3OH are there in 86.2 mL of 0.400 М СН3ОН? |mol 1 3 6. C 7 8 +/- . + х 100 4-
b. Calculate the moles and masses present in these solutions. (i) Calculate the moles and mass of Pb(NO3)2 in 2.3 dm³ of .552 moldm3 solution Relative formula mass of Pb(NO3)2 = 331.2
22.0 g of CO2 gas and 9.01 g of H2O gas are formed from combustion of an unknown hydrocarbon (containing only hydrogen and carbon) in the presence of O2 gas. The molar mass of the gas is 84.2 g/mol. What is its molecular formula?
how many grams of NaIO3 are required to prepare 454 grams I2 according to the following reaction 2 NaIO3 + 5 NaHSO3 - 3 NaHSO4 + 2 Na2SO4 + H2O + I2 what mass of water (in grams) is necessary to convert 225 g SiF4 to SiO2 SiF4 + 2 H2O - 4HF + SiO2
Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that had been diluted by mixing with table salt (sodium chloride). When 2.00 g of the mixture undergoes combustion, 3.97 g of CO₂ is produced. What is the mass percent of morphine in the mixture?
Suppose 1.0 g of Compound A and 4.0 g of Compound B are consumed in a reaction that produces only one product, Compound C. Calculate the theoretical yield of C. Round your answer to the nearest 0.1 g. Suppose 4.6 g of C are actually isolated at the end of the reaction. What is the percent yield of Compound C? Round your answer to the nearest whole percent. % 0 x10 ロ･ロ X 3. olo
Potentially Useful Reference Information Kw = 0.114 x 10-14 at 0°C Kw = 0.465 x 1014 at 15°C Kw = 0.681 x 10-14 at 20°C %3D Kw = 1.00 x 10-14 at 25°C %3D Kw = 2.42 x 10-14 at 37°C Kw = 9.61 x 10-14 at 60°C Acid Ka HCI 1.3 x 106 H2SO4 1х 103 HNO3 2.4 x 101 HSO4 1.2 x 10-2 A student measures the temperature of an NaOH solution to be 15 degrees C. The student then measures the pH of this NaOH solution to be pH = 12.39. H3PO4 7.5 x 103 H3CCOOH 1.8 x 10-5 In a separate experiment at 25°C, a student recorded that it took 25.8 mL of a 0.200M NAOH solution to completely neutralize 32.00 mL of H2CO3 4.3 x 107 an unknown, diprotic acid solution. Determine the initial molarity of H2PO4 6.2 x 10-8 this unknown acid solution. Error analysis is not necessary, but report your answer with the correct HCO3 4.8 x 10-11 number of significant figures. HPO,2 4.8 x 10-13