4.Explain why an empirical formula can represent many different molecules.5.Explain why 1 mol of carbon dioxide contains 6.022 x 1023 molecules and not 6.022 x 10²³ atoms.6.Estradiol is the main estrogen compound that is found in humans. Its molar mass is 272.38 g/mol. Thepercentage composition of estradiol is 79.4% carbon, 11.7% oxygen, and 8.9% hydrogen. Determinewhether its molecular formula is the same as its empirical formula. If not, what is each formula?7.Using the laboratory data table below, calculate the number of water molecules (X) in a hydrate of bariumchloride, BaCl₂ X H₂O.Mass of clean, dry test tube18.42 g20.75 gMass of test tube and hydrated barium chlorideMass of test tube and contents after heating20.41 g

Moles are the bigger unit which is then converted to molecules and then to atoms

4. Explain why an empirical formula can represent many different molecules. 5. Explain why 1 mol of carbon dioxide contains 6.022 x 1023 molecules and not 6.022 x 1023 atoms. Estradiol is the main estrogen compound that is found in humans. Its molar mass is 272 38 g/mol. The

4. Explain why an empirical formula can represent many different molecules. 5. Explain why 1 mol of carbon dioxide contains 6.022 x 1023 molecules and not 6.022 x 1023 atoms. Estradiol is the main estrogen compound that is found in humans. Its molar mass is 272 38 g/mol. The

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter8: Chemical Composition

Section: Chapter Questions

Problem 96AP: A compound was analyzed and found to contain the following percentages of elements by mass: carbon,...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

4.
Explain why an empirical formula can represent many different molecules.
5.
Explain why 1 mol of carbon dioxide contains 6.022 x 1023 molecules and not 6.022 x 10²³ atoms.
6.
Estradiol is the main estrogen compound that is found in humans. Its molar mass is 272.38 g/mol. The
percentage composition of estradiol is 79.4% carbon, 11.7% oxygen, and 8.9% hydrogen. Determine
whether its molecular formula is the same as its empirical formula. If not, what is each formula?
7.
Using the laboratory data table below, calculate the number of water molecules (X) in a hydrate of barium
chloride, BaCl₂ X H₂O.
Mass of clean, dry test tube
18.42 g
20.75 g
Mass of test tube and hydrated barium chloride
Mass of test tube and contents after heating
20.41 g

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