0.997 grams of alum are heated to remove water. After heating the solid for 10 min,...
0.997 grams of alum are heated to remove water. After heating the solid for 10 min, the solid is allowed to cool and reweighed. The mass of the compound after heating is 0.578.
Determine the percentage of water in the alum to ONE DECIMAL PLACE.
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0.997 grams of alum are heated to remove water. After heating
the solid for 10 min,...
If 1.3000 g of alum is heated in a cricible to drive off the water and the remaining solid has a mass of 0,7600 g, how m...
If 1.3000 g of alum is heated in a cricible to drive off the water and the remaining solid has a mass of 0,7600 g, how many moles of water were removed from the solid? Show calculation and correct number of sig figs
A cup of water is heated with a heating coil that delivers 89.78 W of heat....
A cup of water is heated with a heating coil that delivers 89.78 W of heat. In one minute, the temperature of the water rises by 27.31 oC. What is the mass in grams of the water
A cup of water is heated with a heating coil that delivers 101.59 W of heat....
A cup of water is heated with a heating coil that delivers 101.59 W of heat. In one minute, the temperature of the water rises by 15.64 oC. What is the mass in grams of the water?
a 0.897 g mixture of solid KClO3 is heated. the KClO3 decomposes to KCl and O2....
a 0.897 g mixture of solid KClO3 is heated. the KClO3 decomposes to KCl and O2. the mass after heating is 0.642 g. 2KClO=2KCl + 3 O2 a) how many grams of o2 is produced? b) what is the mass percentage of KClO in the mixture?
i have no idea how to do this... 192 EQUIPMENT and CHEMICALS • wire gauze •...
i have no idea how to do this...
192 EQUIPMENT and CHEMICALS • wire gauze • 250-ml beaker - watchglass • alum, KAl(SO4)2-12H20 • unknown hydrate samples S PROCEDURE A. Percentage of Water in Alum Hydrate 1. Weigh a clean, dry, 250-ml beaker covered with a watch glass. Add about 0.8-1.2 g of alum hydrate into the beaker, and reweigh accurately. 2. Support the beaker and watchglass on a ring stand using a wire gauze (Figure 1). Heat the hydrate...
9. (10 pts) A mixture of MnSo, and MnSO4H,O has a mass of 2,005 g. After heating to drive off all the water the ma...
9. (10 pts) A mixture of MnSo, and MnSO4H,O has a mass of 2,005 g. After heating to drive off all the water the mass is 1.780 g, How many grams of MnSO4H.O are presented in the mixture? What is the mass percent of MASO the mixture?
1) When CuSO SHO is heated, it decomposes to anhydrous CuSO4 and water. Complete and balance...
1) When CuSO SHO is heated, it decomposes to anhydrous CuSO4 and water. Complete and balance the following reaction, CuSO4+ 5HO 2) What is the color for anhydrous salt of copper (II) sulfate (CuSO.)? What is the color for ionic hydrate compound of copper (II) sulfate pentahydrate (CuSO. SH:O)? 3) How would you test a colorless crystalline compound to determine whether it is a hydrate or not? 4) How many grams of CuSO4 5H20 are needed to prepare 50,0 mL...
9.(10 pts) A mixture of MnSO4 and MnSO4-4H2O has a mass of 2.005 g. After heating...
9.(10 pts) A mixture of MnSO4 and MnSO4-4H2O has a mass of 2.005 g. After heating to drive off all the water the mass is 1.780 g. How many grams of MnSO4-4H20 are presented in the mixture? What is the mass percent of MnSO4-4H20 in the mixture?
Data Table 1. CuSO4 Data Mass of empty cup (grams) Mass of CuSO, hydrate (erams)S Cuso,...
Data Table 1. CuSO4 Data Mass of empty cup (grams) Mass of CuSO, hydrate (erams)S Cuso, hydrate after 1st heating (grams) CuSO, hydrate after 2nd heating (grams) Mass of released H20 (grams) Number of moles of released H201 Mass of anhydrous Cuso (grams) Number of moles of anhydrous CuSO 02a mo Questions: A) Calculate the ratio of moles of H2O to moles of anhydrous Cuso4. Note: Report the ratio to the closest whole number. B) Write the empirical formula for...
In an experiment in the lab, a white solid called ammonium chloride (NH4Cl) is heated and...
In an experiment in the lab, a white solid called ammonium chloride (NH4Cl) is heated and decomposes to form two gases, hydrogen chloride (one hydrogen and one chlorine) and ammonia (one nitrogen and three hydrogens). The reaction is conducted in a closed flask to capture the gases that are produced. Observations from the experiment are recorded below: . . OBSERVATIONS Mass of flask 132.6 g Mass of NH4Cl and flask 153.8 g . Observations of NH4CI: It is a crystalline...
i have no idea how to do this...
192 EQUIPMENT and CHEMICALS • wire gauze • 250-ml beaker - watchglass • alum, KAl(SO4)2-12H20 • unknown hydrate samples S PROCEDURE A. Percentage of Water in Alum Hydrate 1. Weigh a clean, dry, 250-ml beaker covered with a watch glass. Add about 0.8-1.2 g of alum hydrate into the beaker, and reweigh accurately. 2. Support the beaker and watchglass on a ring stand using a wire gauze (Figure 1). Heat the hydrate...
9. (10 pts) A mixture of MnSo, and MnSO4H,O has a mass of 2,005 g. After heating to drive off all the water the mass is 1.780 g, How many grams of MnSO4H.O are presented in the mixture? What is the mass percent of MASO the mixture?
1) When CuSO SHO is heated, it decomposes to anhydrous CuSO4 and water. Complete and balance the following reaction, CuSO4+ 5HO 2) What is the color for anhydrous salt of copper (II) sulfate (CuSO.)? What is the color for ionic hydrate compound of copper (II) sulfate pentahydrate (CuSO. SH:O)? 3) How would you test a colorless crystalline compound to determine whether it is a hydrate or not? 4) How many grams of CuSO4 5H20 are needed to prepare 50,0 mL...
9.(10 pts) A mixture of MnSO4 and MnSO4-4H2O has a mass of 2.005 g. After heating to drive off all the water the mass is 1.780 g. How many grams of MnSO4-4H20 are presented in the mixture? What is the mass percent of MnSO4-4H20 in the mixture?
Data Table 1. CuSO4 Data Mass of empty cup (grams) Mass of CuSO, hydrate (erams)S Cuso, hydrate after 1st heating (grams) CuSO, hydrate after 2nd heating (grams) Mass of released H20 (grams) Number of moles of released H201 Mass of anhydrous Cuso (grams) Number of moles of anhydrous CuSO 02a mo Questions: A) Calculate the ratio of moles of H2O to moles of anhydrous Cuso4. Note: Report the ratio to the closest whole number. B) Write the empirical formula for...
In an experiment in the lab, a white solid called ammonium chloride (NH4Cl) is heated and decomposes to form two gases, hydrogen chloride (one hydrogen and one chlorine) and ammonia (one nitrogen and three hydrogens). The reaction is conducted in a closed flask to capture the gases that are produced. Observations from the experiment are recorded below: . . OBSERVATIONS Mass of flask 132.6 g Mass of NH4Cl and flask 153.8 g . Observations of NH4CI: It is a crystalline...
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