It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration).
A 39.45 gram sample of a hydrate of BaI2 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 30.91 grams of the anhydrous compound remained. What is the formula of the hydrate?
It is often possible to change a hydrate into an anhydrous compound by heating it to...
It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration).A 36.04 gram sample of a hydrate of Na2SO3 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 18.01 grams of the anhydrous compound remained. What is the formula of the hydrate?
(Review Topics) [References Use the References to access important values if needed for this question. It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration) A 41.36 gram sample of a hydrate of Ca(NO3)2 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 28.74 grams of the anhydrous compound remained. What is the formula of the hydrate? Use a period instead of a dot...
It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). Write an equation that shows the dehydration of manganese(II) sulfate tetrahydrate. Use an asterisk to enter the dot.
A 45.61 gram sample of a hydrate of Ba(ClO4)2 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 39.90 grams of the anhydrous compound remained. What is the formula of the hydrate?
A 39.36 gram sample of a hydrate of CoSO4 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 21.70 grams of the dehydrated compound remained. What is the formula of the hydrate?
References Use the References to access important values if needed for this question. One of the hydrates of Na2SO4 is sodium sulfate heptahydrate. A 70.4 gram sample of Na2SO4.7H20 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, how many grams of the anhydrous compound remained? Submit Answer progress
A hydrate of Cobalt(ii)Chloride had mass of 166.04g before heating. After heating, the anhydrous CoCl2 weighed 130.9g. - what is the mass of the water that was driven off? - how many moles of water were driven off? - how many moles of anhydrous CoCl2 remain? - what is the hydration number (moles of water per mole compound)?
1. How would you determine if you have heated the sample long enough to drive off all the water from the hydrate? 2. A compound is made of 30.9% of Cu, 13.6 % Si, and 55.5% F. a. What is the empirical formula of the anhydrous salt? b. 1.00 gram of this compound is subject to high moisture environment. The resulting hydrate weighs 1.53 grams. What is the formula of the hydrate?
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...
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...