20. Sodium cyclamate, CaH NHS0,Na, was usedat one time as an artificial sweetner
ID: 636120 • Letter: 2
Question
20. Sodium cyclamate, CaH NHS0,Na, was usedat one time as an artificial sweetner. If CH,NHSOMa has a molecular mass of 201.2 g/mol. how many moles of sodium cyclamate are contained in a 25.6 g sample? a. 0.127 mol b. 0.193 mo e. 5180 mol C. 0.245 mol d. 7.90 mol 21. A sample of fructose, a fruit sugar, CHo, that contains 24g of carbon also containg of cxygen. e. 968 a. 24g b. 32 d. 64g 22. Which of the following has the greatest mass? Ah HF molecule 20.0 g of HF 10.0 mol of Ha 1.0 mol of Fa e. 2.0 mol of H:O a. C. d. b. Jr, + _o, ??No, . JtO The balanced equation shows that 1.00 mole of NH3 requires _mole(s) of O: a. 0.57 b. 1.25 C. 1,33 d. 1.75 e. 2.67 24. Identify the ratio of coefficients of CO and HO, when ethane gas (CM) undergoes complete combustion e. 3:1 c. 3:2 d. 1:3 b. 2:3 25. How many grams of axysen are required to burn 4.4 grams of CH? a. 8.0 b. 12 C. 16 d. 32 e. 64 26. Of the following, the only empirical formula is a. NF ?.HK4 e. HNF 27, A compound consists of the following elements by weight percent: Carbon 40.0%, oxygen 53.X Hydrogen 67% The ratio of carton to oyto the emprical formulas d. 2:1:2 28. Analysis of a compound ylelds the following percent composition by weight: 17.55% Na, 39.70% Cr. 42.75% O. what is the simplest formula of this compound? a. Na CrO. C. Nacro, d. NaCr O e. NaCnO b. NaCr 0Explanation / Answer
20)
Answer
a) 0.127mol
no of moles = mass/ molar mass
no of moles of Sodium cyclamate = 25.6g/201.2g/mol = 0.127
21)
b) 32g
conversion factor of C to O in fructose = 6×16g/mol/6×12.01g/mol = 1.3322
22)
d) 1.0 mole of F2
23)
d) 1.75 mol
24)
b) 2:3
2C2H6 + 7O2 - - - - - > 4CO2 + 6H2O
25)
c) 16g
27)
c) 1:1:2
28)
e) Na2Cr2O3
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