Find the molecular and empirical formula of the given compounds 1. Acetylene, a gas used in welding torches, has two carbon atoms and two hydrogen atoms in a molecule.2. Glucose, the sugar in the blood, has six carbon atoms, twelve hydrogen atoms and six oxygen atoms.3. Naphthalene, the compound found in mothballs has 10 carbon atoms and eight hydrogen atoms.4. Benzene, a carbon compound that is used in polymers such as plastic, has six carbon atoms and six hydrogenatoms in a molecule.5. Ethylene, a plant hormone used in industries to ripen fruit, has two carbon atoms and four hydrogen atoms.

1) Acetylene Molecular formula - C2H2

Answered: 1. Acetylene, a gas used in welding…

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter6: Chemical Nomenclature

Section: Chapter Questions

Problem 1PE

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Sketch a magnified view (showing atoms/molecules) of each of the following and explain: a. a heterogeneous mixture of two different compounds b. a homogeneous mixture of an element and a compound
Ma huang, an extract from the ephedra species of plants, contains ephedrine. The Chinese have used this herb for more than 5000 years to treat asthma. More recently, ephedrine has been used in diet pills that can be purchased over the counter in herbal medicine shops. However, very serious concerns have been raised regarding these pills following reports that their use led to serious heart problems. (a) A molecular model of ephedrine is drawn below. From this determine the molecular formula for ephedrine and calculate its molar mass. (b) What is the weight percent of carbon in ephedrine? (c) Calculate the amount (moles) of ephedrine in a 0.125 g sample. (d) How many molecules of ephedrine are there in 0.125 g? How many C atoms?
Which of the following is true about an individual atom? Explain. a. An individual atom should be considered to be a solid. b.An individual atom should be considered to be a liquid. c. An individual atom should be considered to be a gas. d. The state of the atom depends on which element it is. e. An individual atom cannot be considered to be a solid, liquid, or gas. Justify your choice, and for choices you did not pick, explain what is wrong with them.
Carbohydrates, a class of compounds containing the elements carbon, hydrogen, and oxygen, were originally thought to contain one water (H2O) molecule for each carbon atom present. The carbohydrate glucose contains six carbon atoms. Write a general formula showing the relative numbers of each type of atom present in glucose.
A small crystal of CaCl2 that weighs 0.12 g contains 6.5 1020 formula units of CaCl2. What is the total number of ions (cations and anions) that make up this crystal?
Write the chemical formula of each of the following: a The compound made up of a crystal with one particle coming from a nickel atom for every two particles coming from chlorine atoms. b The compound made up of a crystal with two particles coming from silver atoms for every one particle coming from an oxygen atom. c The compound made up of molecules with six carbon atoms, 12 hydrogen atoms, and six oxygen atoms. d The compound made up of molecules with two hydrogen atoms, one sulfur atom, and four oxygen atoms.
The formula of water is If-O. Which of the following is indicated by this formula? Explain your answer. a. The mass of hydrogen is twice that of oxygen in each molecule. b. There are two hydrogen atoms and one oxygen atom per water molecule. c. The mass of oxygen is twice that of hydrogen in each molecule. d. There are two oxygen atoms and one hydrogen atom per water molecule.
Reference Section 5-2 to find the atomic masses of 12C and 13C, the relative abundance of 12C and 13C in natural carbon, and the average mass (in u) of a carbon atom. If you had a sample of natural carbon containing exactly 10,000 atoms, determine the number of 12C and 13C atoms present. What would be the average mass (in u) and the total mass (in u) of the carbon atoms in this 10,000-atom sample? If you had a sample of natural carbon containing 6.0221 1023 atoms, determine the number of 12C and 13C atoms present What would be the average mass (in u) and the total mass (in u) of this 6.0221 1023 atom sample? Given that 1 g = 6.0221 1023 u, what is the total mass of I mole of natural carbon in units of grams?

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