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

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.

gas

explanation:

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