Ascorbic acid (vitamin c) contains c, h, and o. in one combustion analysis, 5.24 g of ascorbic acid yields 7.86 g co2 and 2.14 g h2o. calculate the empirical formula and molecular formula of ascorbic acid given that its molar mass is about 176 g/mol. add subscripts to complete the formulas.

The answer to your question is:

Empirical formula: C₁ H₁.₃O₁  

Molecular formula:   C₆H₈O₆

Explanation:

Ascorbic acid (C, H, and O)

5.24 g of ascorbic acid

7.86 g of CO2

2.14 g of H2O

Empirical formula = ?

Molecular formula = ?

Molecular mass = 176 g/mol

MW CO2 = 44 g

MW H2O = 18 g

                              44 g of CO2  12 g of C

                             7.86 g of CO2   x

                              x = (7.86 x 12) / 44

                              x = 2.14 g of Carbon

                             18 g of water  2 g of H

                             2.14 g of water   x

                             x = (2.14 x 2) / 18

                             x = 0.24 g of H

Mass of Oxygen = 5.24 - 2.14 - 0.24

Mass of Oxygen = 2.86 g of Oxygen

Moles

                         12 g of C  1  mol

                         2.14 g       x

                         x = 2.14 / 12

                         x = 0.18 moles of Carbon

                        1 g of H 1 mol

                        0.24 g  x

                        x = 0.24 / 1

                        x = 0.24 moles of H

                        16 g of O 1 mol

                        2.86 g      x

                        x = 2.86/ 16

                        x = 0.18 moles of oxygen

Divide by the lowest number of moles

Carbon = 0.18/ 0.18  = 1

Hydrogen = 0.24/0.18 = 1.3

Oxygen = 0.18/0.18 = 1

Oxygen = 0.18 / 0.18

                                       C₁ H₁.₃O₁                                          

Molecular formula

C = 12; H = 1.3 ; O = 16     MW = 29.6

Molar mass/ MW                 176/ 29.6  = 6

                                      C₆H₈O₆

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.