Which one of the following molecular formulas is also an empirical formula?

Which compound has the empirical formula with the greatest mass? А. C,H6 В. C4H10 С. C3H10 D. C6H6

A. Calculate the molar mass of each substance. 1. NaCl 2. O2 3. О 4. C6H12O6 5. (NHA)3PO4 6. Ag

4. One mole of CO, (9) molecules contains 6.02 x 10ª CO2 9) molecules. a. true b. false 5. Which of the following samples contains the same number of atoms as 40.00 g of Ne a. 4.00 g of He b. 24.00 g of Mg. c. 40.00 g of C () d. 80.00 g of Ar a 6. When 75 mL of 0.15-mol/L HCI is diluted with distilled water to a final volume of 150 mL, the concentration of HCI is reduced to a. 0.12 mol/L b. 0.10 mol/L c. 0.050 mol/L d. 0.075 mol/L What mass of copper is consumed when 15.0 g of nitric oxide, NO g, is produced according to the following balanced equation? 7. 3 Cu p + 8 HNO, (a9) → 3 Cu(NO,).(ag) + 4 H,O, + 2 NO ) a. 15.0 g b. 22.5 g c. 47.6 g d. 192 g 8. For a neutral solution, which of the following statements is true? a. The concentration of hydrogen ions, [H'], equals 1 x 10* mol/L. b. The pH of a neutral solution is 7.0. c. The concentration of hydrogen ions, [H°], equals the concentration of hydroxide ions, (OH]. d. all of the above 9. A titration is a lab procedure that involves…

Which mass of the molecular elements below would just contain Avogadro’s number of molecules? a. 76 g F2 b. 71 g Cl2 c. 61 g Br2 d. 61 g I2

3. Write the appropriate chemical formulas for compounds with the following ratios of elements. 1 mole calcium: 1 mole carbon: 3 moles oxygen a. b. 1 molecule iron: 3 molecules chlorine 1 mole copper: I mole sulfur: 4 moles oxygen с.

3. Elements B and N form a binary compound BNy When 12 grams of this compound was made from its elements, it consumed 7 grams of elemental nitrogen. A) Find the empirical formula of the compound: The mass of N atoms in the 12 g sample of the compound is g The number of moles of N atoms in the 12 g sample of the compound is mol The mass ofB atoms in the 12 g sample of the compound is g The number of moles of B atoms in the 12 g sample of the compound is mol The empirical formula is: B) Given the molar mass of the compound is 74.46 g/mol, find its chemical formula: Name the compound:

Which of the following compounds have the same empirical formula? .H2O and H2O2 . N2O4 and NO2 .CO and CO2 .CH4 and C2H6

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