(a)
Interpretation:
The chemical formula of each of the following is to be written. In parts a, the black spheres represent carbon atoms; the red, oxygen atoms; and the white, hydrogen atoms.
Concept introduction:
The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the
Answer to Problem 1PE
The chemical formula of the compound is C2H6O
Explanation of Solution
The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,
Number of carbon atoms = 2
Number of hydrogen atoms = 6
Number of oxygen atom = 1
Thus, the molecular formula is C2H6O
Thus, the chemical formula of compound (a) is written.
(b)
Interpretation:
The chemical formula of each of the following is to be written. In parts b, the black spheres represent carbon atoms; the red, oxygen atoms; and the white, hydrogen atoms.
Concept introduction:
The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.
Answer to Problem 1PE
The chemical formula of the compound is C2H6O
Explanation of Solution
The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,
Number of carbon atoms = 2
Number of hydrogen atoms = 6
Number of oxygen atom = 1
Thus, the molecular formula is C2H6O
Thus, the chemical formula of compound (b) is written.
(c)
Interpretation:
The chemical formula of each of the following is to be written. In parts c, the black spheres represent carbon atoms; the red, oxygen atoms; and the white, hydrogen atoms.
Concept introduction:
The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.
Answer to Problem 1PE
The chemical formula of the compound is CH2O
Explanation of Solution
The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,
Number of carbon atoms = 1
Number of hydrogen atoms = 2
Number of oxygen atom = 1
Thus, the molecular formula is CH2O
Thus, the chemical formula of compound (c) is written.
(d)
Interpretation:
The chemical formula of each of the following is to be written. In parts d, the black spheres represent carbon atoms; the red, oxygen atoms; and the white, hydrogen atoms.
Concept introduction:
The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.
Answer to Problem 1PE
The chemical formula of the compound is C3H6O
Explanation of Solution
The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,
Number of carbon atoms = 3
Number of hydrogen atoms = 6
Number of oxygen atom = 1
Thus, the molecular formula is C3H6O
Thus, the chemical formula of compound (d) is written.
(e)
Interpretation:
The chemical formula of each of the following is to be written. In parts e, the compound made up of molecules with one nitrogen atom and three hydrogen atoms
Concept introduction:
The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.
Answer to Problem 1PE
The chemical formula of the compound is NH3
Explanation of Solution
The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,
Number of nitrogen atom = 1
Number of hydrogen atoms = 3
Thus, the molecular formula is NH3
Thus, the chemical formula of compound (e) is written.
(f)
Interpretation:
The chemical formula of each of the following is to be written. In parts f, the compound made up of a crystal with two particles coming from aluminium atoms for every three particles coming from oxygen atoms.
Concept introduction:
The particles possessing by chemical compounds are usually represented by chemical formulas. Besides, the chemical formula of a substance is having the symbols of element using which the chemical compound is made. Generally, in a chemical formula, the subscript number after a symbol denotes the number of atoms of the element in the formula unit of the substance. If the compound is having only one atom of an element of interest, the subscript is omitted.
Answer to Problem 1PE
The chemical formula of the compound is Al2O3
Explanation of Solution
The chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. In the above example, the black spheres represent carbon atoms; the red, oxygen atoms; and the white represents hydrogen atoms. From the diagram, we come to know that,
Number of aluminium atoms = 2
Number of oxygen atoms = 3
Thus, the molecular formula is Al2O3
Thus, the chemical formula of compound (f) is written.
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Chapter 6 Solutions
Introductory Chemistry: An Active Learning Approach
- 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.arrow_forwardThe 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.arrow_forwardTwo elements, R and Q, combine to form two binary compounds. In the first compound, 14.0 g of R combines with 3.00 g of Q. In the second compound, 7.00 g of R combines with 4.50 g of Q. Show that these data are in accord with the law of multiple proportions. If the formula of the second compound is RQ, what is the formula of the first compound?arrow_forward
- Samples of compound X, Y, and Z are analyzed, with results shown here. Compound Description Mass of Carbon Mass of Hydrogen X clear, colorless, liquid with strong odor 1.776 g 0.148 g Y clear, colorless, liquid with strong odor 1.974 g 0.329 g Z clear, colorless, liquid with strong odor 7.812 g 0.651 g Do these data provide example(s) of the law of definite proportions, the law of multiple proportions, neither, or both? What do these data tell you about compounds X, Y, and Z?arrow_forwardThese questions concern the work of J. J. Thomson: From Thomson’s work, which particles do you think he would feel are most important in the formation of compounds (chemical changes) and why? Of the remaining two subatomic particles, which do you place second in importance for forming compounds and why? Come up with three models that explain Thomson’s findings and evaluate them. To be complete you should include Thomson’s findings.arrow_forwardWhich 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.arrow_forward
- A cube of sodium has length 1.25 in. How many atoms are in that cube? (Note: dNa=0.968g/cm3.)arrow_forwardA cube of sodium has length 1.25 in. How many atoms are in that cube? (Note: dNa=0.968 g/cm3.)arrow_forwardChlorine has two isotopes, Cl-35 and Cl-37. Their abundances are 75.53% and 24.47%, respectively. Assume that the only hydrogen isotope present is H-1. (a) How many different HCI molecules are possible? (b) What is the sum of the mass numbers of the two atoms in each molecule? (c) Sketch the mass spectrum for HCI if all the positive ions are obtained by removing a single electron from an HCI molecule.arrow_forward
- 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?arrow_forwardEach of the following statements is true, but Dalton might have had trouble explaining some of them with his atomic theory. Give explanations for the following statements. a. The space-filling models for ethyl alcohol and dimethyl ether are shown below. These two compounds have die same composition by mass (52% carbon, 13% hydrogen, and 35% oxygen), yet the two have different melting points, boiling points, and solubilities in water. b. Burning wood leaves an ash that is only a small fraction of the mass of the original wood. c. Atoms can be broken down into smaller particles. d. One sample of lithium hydride is 87.4% lithium by mass, while another sample of lithium hydride Ls 74.9% lithium by mass. However, the two samples have the same chemical properties.arrow_forwardClick on the site (http://openstaxcollege.org/l/16PhetAtomMass) and select the Mix Isotopes tab, hide the Percent Composition and Average Atomic Mass boxes, and then select the element boron. Write the symbols of the isotopes of boron that are shown as naturally occurring in significant amounts. Predict the relative amounts (percentages) of these boron isotopes found in nature. Explain the reasoning behind your choice. Add isotopes to the black box to make a mixture that matches your prediction in (b). You may drag isotopes from their bins or click on More and then move the sliders to the appropriate amounts. Reveal the Percent Composition and Average Atomic Mass boxes. How well does your mixture match with your prediction? If necessary, adjust the isotope amounts to match your prediction. Select Nature’s mix of isotopes and compare it to your prediction. How well does your prediction compare with the naturally occurring mixture? Explain. If necessary, adjust your amounts to make them match Nature’s amounts as closely as possible. 21. Repeat Exercise 2.20 using an element that has three naturally occurring isotopes.arrow_forward
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