You are given a 2.9265 g sample of a substance with the generic formula MCl2(H2O)6. After completely drying the sample (which means removing the 6 moles of H2O per mole of MCl2), the sample weighs 1.5969 g.
You are given a 2.9265 g sample of a substance with the generic formula MCl2(H2O)6. After...
you are dying a sample of Ba3(PO4)2. after 5 minutes of drying it weighs 1.2034 g. you continue to dry the sample for another 5 minutes and now it weighs 1.9345 g. what is the percent change in mass?
A sample of a substance with the empirical formula XC1_2 weighs 0.5785 g. When it is dissolved in water and all its chlorine is converted to insoluble AgCl by addition of an excess of silver nitrate, the mass of the resulting AgCl is found to be 1.2794 g. The chemical reaction is XCI_2 + 2 AgNO_3 rightarrow 2 AgCI + X(NO_3)_2 Calculate the formula mass of XCI_2. Formula mass XCI_2 = g mol^-1 Calculate the atomic mass of X. Atomic...
A sample of a substance with the empirical formula XCl3 weighs 0.4393 g. When it is dissolved in water and all its chlorine is converted to insoluble AgCl by addition of an excess of silver nitrate, the mass of the resulting AgCl is found to be 1.1926 g. The chemical reaction is XCl3 + 3 AgNO33AgCl + X(NO3)3 (a) Calculate the formula mass of XCl3. Formula mass XCl3 = g mol-1 (b) Calculate the atomic mass of X. Atomic mass...
A sample of a substance with the empirical formula XCl3 weighs 0.5183 g. When it is dissolved in water and all its chlorine is converted to insoluble AgCI by addition of an excess of silver nitrate, the mass of the resulting AgCl is found to he 1.4071 g. The chemical reaction is XCl3 +3 AgNO3 3AgCI + X(NO3)3 (a) Calculate the formula mass of XCl3. Formula mass XCI3- g mol (b) Calculate the atomic mass of X Atomic mass X-...
A 0.0593−mol sample of a nutrient substance, with a formula weight of 114 g/mol, is burned in a bomb calorimeter containing 4.73 × 102 g H2O. Given that the fuel value is 4.80 ×10−1 in nutritional Cal when the temperature of the water is increased by 6.86°C, calculate the fuel value in kJ. Enter your answer in scientific notation. Be sure to answer all parts.
Consider a molecule with the formula C3H1106N13. How many moles of hydrogen atoms are there if you have 7 moles of the molecule? Consider the following generic balanced reaction equation: 5A + 3B 22C If 3.3 moles of A react completely, how many moles of C will be produced? How many grams are the in 40 moles of a compound with a molar mass of 58.2 grams per mole (g/mol)? How many moles are in 176.4 grams of a compound...
is the 6-15 ce is How many moles of specified particles are present in a sample of each of the following substances if each sample weighs 5.00 g? a. CO molecules b. CO, molecules ce is c. B,H,, molecules CUI at is the formula mass of a compound whose molar 6-17 What is the formu 6-25 mass is 44.01 g? I the Mole Concept (Section 6-4) Chemical Formulas a 6-21 How many moles in 2.00-mole sa compounds? any moles of...
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...
molar mass of CoCl2: 6 H2O = 237.99 g/mol : 1 mole of Cola: 6H2O = 237.93 g : 0.160 g = (0.160*!) mole of CoCl2CH2O 237.93) = 0.000672 mole 0.672 momol coola Co2+ + aci . conc. of Co2+ = 0.642 mmol conc. of C1 = 2X0672. = 1.344 01001 We were unable to transcribe this imageDATA SHEET 11.1 Baron Bobinen Done 10/2419 Data Analysis and Calculations PART B Preparing the Solutions and Cuvettes Mass of Cocl, 64,0:0.160 Determine...
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...