A hydrate initially weighs 5.821 grams and is heated. After heating it weighs 3.331 grams. Assuming that the mass lost is water from the crystal lattice, determine the percent water in the hydrate initially. Answer with a number without a percent sign.

Q: What percentage of sodium is in pure table salt?  Include two decimal places in your answer.

A: The chemical formula of table salt is NaCl. Molar mass of NaCl = 58. 44 g/mol Molar mass of Na atom…

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Q: A student obtains 50.00 grams of calcium hydroxide.  Determine the number of hydroxide ions present…

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Q: Magnesium sulfate heptahydrate Copper(I) sulfate pentahydrate otassium phosphate decahydrate Calcium…

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Q: If 20.0g of copper(II) chloride reacts with 20.0 grams of sodium phosphate in aqueous solutions…

A: Given reaction 3 CuCl2 (aq) + 2 Na3PO4 (aq)  →  Cu3(PO4)2 (s)   + 6 NaCl(aq.)Mass of CuCl2 = 20.0…

Q: calculate the percent of water in the copper (II) sulfate n hydrate by mass. Pentahydrate mass=…

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Q: 4. A sample of 2.12 g of copper was heated in an oxygen atmosphere until no further change took…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Analysis of a 29.1 g sample of water revealed a mass percent for lead of 4.35%. Calculate the number…

A: Mass percent of lead is equal to the mass of lead divided by the mass of water multiplied by 100.

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Q: Calculate the percentage composition for C2H60. (Enter your answer to four significant figures.)…

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Q: Calculate how many moles of CaCl2•2H2O are present in 1.50 g of CaCl2•2H2O and then calculate how…

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Q: The percent by mass of copper(I) in CuCH3COO is?

A:

Q: Phillip the freshman chemistry student was stirring his salt during heating. If some of the hydrated…

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Q: What mass of ethanol is in a 259 g of 24.1 % ethanol in water.

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Q: Phosphorus occurs naturally as calcium phosphate. What is the empirical formula for this substance?…

A: Concept introduction: Empirical formula for ionic compound indicates the smallest whole number ratio…

Q: Given the following percentage composition: 43.64% phosphorus and 56.36% oxygen; and molecular mass…

A: The given data contains, Phosphorus =43.64% Oxygen =56.36% Molecular mass =141.9 g

Q: c. PB13 molecule Mass = %3D d. Fe(OH)3 formula unit Mass %3D

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Q: Calculate the number of H ions in 0.468 g of MgH2. Be sure your answer has the correct number of…

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Q: Analysis of a 31.7 g sample of water revealed a mass percent for lead of 3.3%. Calculate the number…

A: Analysis of 31.7 g of water was done and the mass percentage of lead was found to be 3.3%,

Q: A student was given a sample of hydrated Na2CrO4 (molar mass of anhydrous Na2CrO4: 162.0 g/mol). She…

A:

Q: What are the names of the fundamental laws which explain the properties of massand define one of…

A: Answer -  The names of the fundamental laws which explain the properties of mass - 1.The law of the…

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Q: Compute the volume of SO2 gas produced at ambient conditions, 760 Torr and 22.7 °C.

A:

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Q: Determine the number of moles present in a 1000 g gold bar. Round off your answer to the nearest…

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Q: Draw the 'dot-and-cross' diagram for a molecule of carbon monoxide.

A: Given,  Carbon monoxide (CO)

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Q: A 4.00 g sample of a hydrate of nickel(III) bromide looses 0.793 g of water when heated. Determine…

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Q: -0.0146KJ /g 432-50.0--6.8.× 50.0g x4.18579°C-F1420J C. How much energy is lost by the water when it…

A: Your answers for options-(a), (b), and (c) are right.

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A: Given : Mass of hydrate compound = 1.235 g And mass of water present = 0.511 g

Q: 2.708 gram sample of an organic compound containing C, H and O is analyzed d 6.157 grams of CO2 and…

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Q: . Aluminum metal is produced by passing an electric current through a solution of aluminum oxide…

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Q: A sample of sea water contains 68.7 g of sodium chloride in 106 mL of solution. How many moles of…

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Q: 1. Give reasons why the helium atom is smaller than the cesium atom. 2. A student got a problem…

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