A 2.902 g sample of calcium chloride is decomposed into its constituent elements and found to...
A 7.95 g sample of calcium sulfide was decomposed into its constituent elements, producing 4.42 g of calcium and 3.53 g of sulfur. Which of the following statements are consistent with the law of constant composition (definite proportions)? Select all that apply. The ratio of calcium to sulfur will vary based on how the sample was prepared. The mass ratio of Ca to S in every sample of calcium sulfide is 1.25. Every sample of calcium sulfide will have 55.6%...
A 9.119.11 g sample of calcium sulfide was decomposed into its constituent elements, producing 5.075.07 g of calcium and 4.044.04 g of sulfur. Which of the statements are consistent with the law of constant composition (definite proportions)? -The mass ratio of CaCa to SS in every sample of calcium sulfide is 1.25. -The mass percentage of calcium plus the mass percentage of sulfur in every sample of calcium sulfide equals 100%. -Every sample of calcium sulfide will have 55.6% mass...
A 3.71 g sample of calcium sulfide was decomposed into its constituent elements, producing 2.06 g of calcium and 1.65 g of sulfur. Which of the statements are consistent with the law of constant composition (definite proportions)? The ratio of calcium to sulfur will vary based on how the sample was prepared. The mass percentage of calcium plus the mass percentage of sulfur in every sample of calcium sulfide equals 100%. Every sample of calcium sulfide will have 55.6% mass...
Two samples of calcium fluoride are decomposed into their constituent elements. The first sample produced 0.154 g of calcium and 0.146 g of fluorine. If the second sample produced 294 mg of fluorine, how many g of calcium were formed?
a sample of potassium iodide are decomposed into the constituent elements. if the sample produced 24.4 kg of potassium, how many kg of iodine was produced?
Attempt 1 Question 14 of 15 > A 0.690 g mixture containing only sodium chloride and potassium chloride was dissolved in water. It required 34.8 mL of 0.317 M AgNO, to completely precipitate all of the chloride present. What is percent composition by mass of sodium chloride and potassium chloride in the mixture? mass percent NaCl : 64.2 mass percent KCI : 35.9
A 0.510-g sample of calcium chloride reacts with sodium carbonate to give 0.366 g of calcium carbonate precipitate. What is the percent yield? 3
Consider the dissolution of Calcium Chloride: CaCl2(s)---->Ca^+2(aq) + 2Cl−(aq) ΔHrxn= -81.5kJ An 12.0 g sample of calcium chloride is dissolved in 100.0 g of water, with both substance at 22.0 degree C. Molar Mass: CaCl2= 110.98g.mol Molar Mass H20= 18.02g/mol Density of H20= 1.00g/mol Cs(soln)= 4.20 J/(g K) Will the temperature of the solution go up or down? Explain. Calculate q(reaction)
A 1.507 g sample was found to contain 0.872 g SiO2, 0.206 g NH4Cl, 0.155 g NaCl, and the remainder being Fe. Calculate the percent composition of your mixture.
An organic pesticide (MW 183.7) is 8.43% Cl in mass. A 0.627 g sample containing the pesticide plus inert material containing no chloride was decomposed with metallic sodium in alcohol. The liberated chloride ion was precipitated as 0.0831 g AgCl(s). Calculate the percentage of pesticide in the sample. (1)