Concept explainers
Videos
(a)
Interpretation:
The chemical notation
Concept Introduction:
The composition of a chemical compound can be presented in a very precise was with the use of chemical formula. Chemical formula uses chemical symbols of the elements that is present in the compound and numerical subscripts that represent how many number of atoms of each element is present in the compound.
(a)
Answer to Problem 1.75EP
Explanation of Solution
Given chemical notation is
The total number of atoms present in the chemical formula is found by summing up the subscript present in the chemical formula.
Therefore, there are six atoms in the given chemical formula.
(b)
Interpretation:
The chemical notation
Concept Introduction:
The composition of a chemical compound can be presented in a very precise was with the use of chemical formula. Chemical formula uses chemical symbols of the elements that is present in the compound and numerical subscripts that represent how many number of atoms of each element is present in the compound.
(b)
Answer to Problem 1.75EP
Explanation of Solution
Given chemical notation is
The total number of atoms present in the chemical formula is found by summing up the subscript present in the chemical formula.
Therefore, there are five atoms in the given chemical formula.
(c)
Interpretation:
The chemical notation
Concept Introduction:
The composition of a chemical compound can be presented in a very precise was with the use of chemical formula. Chemical formula uses chemical symbols of the elements that is present in the compound and numerical subscripts that represent how many number of atoms of each element is present in the compound.
(c)
Answer to Problem 1.75EP
Explanation of Solution
Given chemical notation is
The total number of atoms present in the chemical formula is found by summing up the subscript present in the chemical formula.
Therefore, there is one atom in the given chemical formula.
(d)
Interpretation:
The chemical notation
Concept Introduction:
The composition of a chemical compound can be presented in a very precise was with the use of chemical formula. Chemical formula uses chemical symbols of the elements that is present in the compound and numerical subscripts that represent how many number of atoms of each element is present in the compound.
(d)
Answer to Problem 1.75EP
Explanation of Solution
Given chemical notation is
The total number of atoms present in the chemical formula is found by summing up the subscript present in the chemical formula.
Therefore, there is two atoms in the given chemical formula.
Want to see more full solutions like this?
Chapter 1 Solutions
Bundle: General, Organic, and Biological Chemistry, 7th + OWLv2 Quick Prep for General Chemistry, 4 terms (24 months) Printed Access Card
- Determine the number of each type of atom in molecules represented by the following formulas: a. sulfur dioxide (SO2) b. butane (C4H10) c. chlorous acid (HClO2) d. boron trifluoride (BF3)arrow_forward2.71 Use the web to determine the amount of low-density polyethylene and high-density polyethylene produced annually in the United States. Which uses predominate in the applications of these two materials?arrow_forwardMa 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?arrow_forward
- You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react gas X with gas Y to make the products, you get the following data (all at the same pressure and temperature): 1. volume gas X + 2 volumes gas Y2 volumes compound I 2. volumes gas X + 1 volume gas Y2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.arrow_forwardYou have a sample of copper (Cu) and a sample of aluminum (Al). You have an equal number of atoms in each sample. Which of the following statements concerning the masses of the samples is true? l type='a'> The mass of the copper sample is more than twice as great as the mass of the aluminum sample. i>The mass of the copper sample is more than the mass of the aluminum sample, but it is not more than twice as great. i>The mass of the aluminum sample is more than twice as great as the mass of the copper sample. i>The mass of the aluminum sample is more than the mass of the copper sample, hut it is not more than twice as great. i>The masses of the samples are equal.arrow_forwardFor each space-filling molecular model, write a chemical formula. Carbon atoms are black, hydrogen atoms are white, oxygen atoms are red, and nitrogen atoms are blue.arrow_forward
- High-density lipoprotein (HDL) cholesterol is the good cholesterol because adequate levels reduce the risk of heart disease and stroke. HDL levels between 40. and 59 mg/dL are typical for a healthy individual. What is this range of HDL cholesterol in units of mol/L? The formula for cholesterol is C27H46O.arrow_forwardWrite the molecular formula and calculate the molar mass for each of the molecules shown here. Which has the largest mass percent of carbon? Of oxygen? (a) ethylene glycol (used in antifreeze) (b) dihydroxyacetone (used in artificial tanning lotions) (c) ascorbic acid, commonly known as vitamin Carrow_forward8. Fill in the following boxes. . HO. heat HO. SOC2 NaN3 1. he t 2. H2C 2 Mel +arrow_forward
- ww TTTTT #1 #2 Use the pictures above to answer questions 12 & 13. 12 Which picture or pictures best show a pure element? A. Picture #1 & Picture #2 B. Picture #1 only 13 Which picture shows a pure compound? #1 & Picture #2 #3 A. B. Picture #1 only C. Picture #3 & Picture #4 D. Picture #4 only C. Picture #3 & Picture #4 D. Picture #4 only #4 14 Which is NOT a characteristic of a solid? A. Fixed shape and fixed volume. B. Atoms or molecules very closely packed together in a regular arrangement. C. The atoms or molecules vibrate at different rates at different temperatures. D. The free surface is a gravity surface, and always horizontal to the Earth's surface. What is a solid substance in which the atoms and molecules are in a repeating 3- 15 dimensional arrangement or bonding pattern throughout? A. Crystalline solids B. Amorphous solids C. Ambidextrous solids D. Marl solids What is a solid substance in which the atoms and molecules are randomly or 16 inconsistently arranged throughout?…arrow_forwardMultiple Choice |1. Ions that are formed from one atom are known as a. polyatomic ions. b. monatomic ions. c. cations. d. anions. 2. A group of atoms united by covalent bonds is a(an) a. cation. b. molecule. c. ionic compound. d. octet. 3. Ionic compounds are always a. electrically neutral. b. made up of atoms that share electrons c. polyatomic cations. d. the same as molecules. 4. To form a bond, atoms share a. neutrons. b. protons. c. inner-shell electrons. d. valence electrons. 5. A positively charged ion attracts a(an) a. neutral jon. b. cation. c. anion. d. proton. 6. Ionic compounds a. have high melting points. b. are brittle. c. are good conductors in their liquid state. d. all of the above. 7. During a chemical reaction, a. new elements are produced. b. atoms are destroyed. c. atoms are rearranged. d. elements are destroyed. |8. An equation is balanced by a. changing subscripts. b. erasing elements as necessary. c. adding coefficients. d. adding elements as necessary. 9. A…arrow_forwardA student writes the chemical formula for the ionic compound calcium hydroxide as CaOH2. A) write the chemical formula for each ion in the compounds Calcium: Hydroxide: B) why is the students chemical formula for the compound calcium hydroxide wrong ?arrow_forward
General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning
World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning
Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Living By Chemistry: First Edition TextbookChemistryISBN:9781559539418Author:Angelica StacyPublisher:MAC HIGHER
Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co