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8. A 4.00 gram sample of a hydrate of nickel(II) bromide loses 0.793 grams of water...
chemistry
A 2.500 gram sample of a hydrate of calciumsulfate loses 0.523grams of water when heated. Determine the mass percent of water in the hydrate and the formula of the hydrate
A 6.2351 g sample of an unknown hydrate of cobalt(II) bromide is heated until all the...
A 6.2351 g sample of an unknown hydrate of cobalt(II) bromide is heated until all the water of hydration is removed. The CoBr2 that remains has a mass of 5.0000 g. 1. How many moles of CoBr2 are in the sample? mol 2. How many grams of water were lost in the dehydration? g 3. How many moles of water were lost? (mol) 4. What is the value of "n" in the formula CoBr2 · n H2O? (1, 2, 3,...
A student is given a sample of a calcium sulfate hydrate. He places the sample in...
A student is given a sample of a calcium sulfate hydrate. He places the sample in a dry, covered crucible and weighs it. The total mass (crucible, cover, and hydrate) is 19.39219.392 g. The crucible and cover together had previously weighed 17.98717.987 g. He then heats the crucible to redness for 10 minutes with the cover slightly ajar. After the crucible cools, he weighs the crucible and its contents; the mass is now 19.09819.098 g, due to the loss of...
H,O, where x is an integer. If the hydrate is heated, the water can be driven...
H,O, where x is an integer. If the hydrate is heated, the water can be driven off, Iron(II) sulfate forms several hydrates with the general formula FeSO, leaving pure FeSO, behind Suppose a sample of a certain hydrate is heated until all the water is removed, and it's found that the mass of the sample decreases by 11. %. Which hydrate is it? That is, what is x?
When copper(II) sulfate pentahydrate is heated in air above 100C, it loses the water molecules and...
When copper(II) sulfate pentahydrate is heated in air above 100C, it loses the water molecules and also its blue color. CuSO4•5H2O—>CuSO4 + 5H2O If 9.75 g of CuSO4 are left after heating 15.25 g of the blue hydrate, calculate the number of moles of water originally present in 15.25 g of the hydrate.
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in...
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in a dry, covered crucible and obtains a mass of 24.747 g for the crucible, cover, and sample. Earlier she had found that the crucible and cover weighed 23.599 g. She then heats the crucible to drive off the water of hydration, keeping the crucible at red heat for about 10 minutes with the cover slightly ajar. She then lets the crucible cool, and finds...
1. A 5.000 gram sample of hydrated nickel (II) cyanide, Ni(CN)2·xH2O is heated according to the...
1. A 5.000 gram sample of hydrated nickel (II) cyanide, Ni(CN)2·xH2O is heated according to the procedure described in this laboratory. After heating, the sample is found to weigh 3.029 grams. How many moles of H2O were present in the sample? How many moles of Ni(CN)2 were present? 2. Determine the empirical formula of the hydrated salt from question 1. Write your answer in the format, Ni(CN)2∙ x H2O, where “x” is an integer.
CHM 010 On-Line Lab, Formula of a Hydrate PURPOSE: To determine the formula of Cuso..x H20....
CHM 010 On-Line Lab, Formula of a Hydrate PURPOSE: To determine the formula of Cuso..x H20. In other words, to determine the value of "X". PROCEDURE: When copper(II) sulfate x hydrate, a blue crystalline solid containing embedded water molecules (called a hydrate), is heated in air, it loses the water molecules and the blue solid is transformed to a white anhydrous (no water) crystal known as anhydrous copper(II) sulfate. The "x" represents a whole number of water molecules attached to...
Pre-lab Questions for Experiment-7 Hydrates and the Determination of the Formula of a Hydrate 1) What...
Pre-lab Questions for Experiment-7 Hydrates and the Determination of the Formula of a Hydrate 1) What is the color for anhydrous salt of copper (ID) sulfate (CuSO.)? What is the color for ionic hydrate compound of copper (II) sulfate pentahydrate (CuSO4 5H20)? 2) How would you test a colorless rystalline compound to determine if it was a hydrate? 3 1.2008 g of a hydrate of CuSO4" XH O after heated has a mass of 0.7676 g. Calculate the mass percent...
H20 MASS of H20 2.09 8. A sample of 8.85 g of Na2CO3 hydrate is heated,...
H20 MASS of H20 2.09 8. A sample of 8.85 g of Na2CO3 hydrate is heated, losing 1.28 g of water. Find the empirical formula 8. A sample of 8.85 g of Na2CO3 hydrate is heated, losing 1.28 g of water. Find the empirical formula.
H,O, where x is an integer. If the hydrate is heated, the water can be driven off, Iron(II) sulfate forms several hydrates with the general formula FeSO, leaving pure FeSO, behind Suppose a sample of a certain hydrate is heated until all the water is removed, and it's found that the mass of the sample decreases by 11. %. Which hydrate is it? That is, what is x?
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in a dry, covered crucible and obtains a mass of 24.747 g for the crucible, cover, and sample. Earlier she had found that the crucible and cover weighed 23.599 g. She then heats the crucible to drive off the water of hydration, keeping the crucible at red heat for about 10 minutes with the cover slightly ajar. She then lets the crucible cool, and finds...
CHM 010 On-Line Lab, Formula of a Hydrate PURPOSE: To determine the formula of Cuso..x H20. In other words, to determine the value of "X". PROCEDURE: When copper(II) sulfate x hydrate, a blue crystalline solid containing embedded water molecules (called a hydrate), is heated in air, it loses the water molecules and the blue solid is transformed to a white anhydrous (no water) crystal known as anhydrous copper(II) sulfate. The "x" represents a whole number of water molecules attached to...
Pre-lab Questions for Experiment-7 Hydrates and the Determination of the Formula of a Hydrate 1) What is the color for anhydrous salt of copper (ID) sulfate (CuSO.)? What is the color for ionic hydrate compound of copper (II) sulfate pentahydrate (CuSO4 5H20)? 2) How would you test a colorless rystalline compound to determine if it was a hydrate? 3 1.2008 g of a hydrate of CuSO4" XH O after heated has a mass of 0.7676 g. Calculate the mass percent...
H20 MASS of H20 2.09 8. A sample of 8.85 g of Na2CO3 hydrate is heated, losing 1.28 g of water. Find the empirical formula 8. A sample of 8.85 g of Na2CO3 hydrate is heated, losing 1.28 g of water. Find the empirical formula.
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