Concept explainers
Methanol has the molecular formula
Each of four hydrogen atoms contributes ___ valence electron, the carbon atom contributes ___, and the oxygen atom contributes ___, making a total of ___.
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Chapter 1 Solutions
Pushing Electrons
- Match the molecular model with the correct chemical formula: CH3OH, NH3, KCl, H2O.arrow_forward3-77 Ozone, O3, is an unstable blue gas with a characteristic pungent odor. In an ozone molecule, the connectivity of the atoms is OOO and both OO bonds are equivalent. (a) How many valence electrons must be present in an acceptable Lewis structure for an ozone molecule? (b) Write two equivalent resonance contributing structures for ozone. Be certain to show any positive or negative charges that may be present in your contributing structures. By equivalent contributing structures, we mean that each has the same pattern of bonding. (c) Show by the use of curved arrows how the first of your contributing structures may be converted to the second. (d) Based on your contributing structures, predict the OOO bond angle in ozone. (e) Explain why the following is not an acceptable contributing structure for an ozone molecule:arrow_forwardPredict which of the following compounds are ionic and which are covalent, based on the location of their constituent atoms in the periodic table: (a) CI2CO (b) MnO (c) Nd3 (d) CoBr2 (e) K2S (f) CO (g) CaF2 (h) HI (j) CaO (j) IBr (k) CO2arrow_forward
- The model consists of balls and sticks. a. How many holes should be in the ball you select for the N atom? ___________ b. How many holes should be in the ball you select for the H atoms? ____________ c. How many holes should be in the ball you select for the Cl atom? ____________ The electrons in the molecule are paired, and each stick represents a valence electron pair. d. How many sticks do you need? ____________arrow_forwardFor the following pairs of ions, use the principle of electrical neutrality to predict the formula of the binary compound that the ions are most likely to form. Na+andS2e.Cu2+andBr K+andClf.Al3+andI Ba2+andO2g.Al3+andO2 Mg2+andSe2h.Ca2+andN3arrow_forwardAcrylamide, H2C=CHCONH2, is a known neurotoxin and possible carcinogen. It was a shock to all consumers of potato chips and french fries a few years ago when it was found to occur in those products. (a) Sketch the molecular structure of acrylamide and identify all bond angles. (b) Indicate which carbon-carbon bond is the stronger of the two. (c) Is the molecule polar or nonpolar? (d) The amount of acrylamide found in potato chips is 1.7 mg/kg. If a serving of potato chips is 28 g, how many moles of acrylamide are you consuming?arrow_forward
- Consider the following energy changes: E(kJ/mol) Mg(g) Mg+(g) + e 735 Mg+ (g) Mg2+(g) + e 1445 O(g) + e + O (g) 141 O(g) + e O2 (g) 878 Magnesium oxide exists as Mg2+O2 and not as Mg+O. Explain.arrow_forwardWithout actually drawing the Lewis structure, determine how many valence electrons are available for covalent bonding in each of the following molecules. a. SiH4 b. NCl3 c. H2S d. Cl2Oarrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. .. The correct number is: || olo No, it has the right number of valence electrons but doesn't satisfy the octet rule. Ar The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is:| N=N No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: || H - C= N No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0". Explanation Check O 2021…arrow_forward
- ck Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure esc HICICIH : 0: ! 1 Explanation || Q A :Z: L || N The symbols of the problem atoms are:* 10 * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0". @ 2 Check W S O Yes. O No, it has the wrong number of valence electrons. The correct number is: O No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* 0 O Yes. O No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the Ooctet rule. The symbols of the problem atoms are:* 10 OYes. O No, it has the wrong number of valence electrons. The correct number is: Is the proposed Lewis structure reasonable? # 3 No, it has the right number of valence…arrow_forwardBenzene (C6H6) has six equivalent carbon atoms and two resonance structures: H. H-っ Hープ If the C-C single bond length is 1.56 Å and the C=C double bond length is 1.19 Å, what is the observed (average) carbon/carbon bond length in benzene? State your answer in Å (without units). Note: the H- H. c-C" numbers in this question are not the actual bond lengths.arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. H –0 The correct number is:|| No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. ä=ö| The correct number is: || : Cl =0: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: N No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0". :Z : :Z :arrow_forward
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