Concept explainers
(a)
Interpretation:
The molecular weight of the given molecule in
Concept introduction:
The total number of protons and neutron which are present in an atom is collectively known as
Answer to Problem 2.30E
The molecular weight of the given molecule, nitrogen dioxide in
Explanation of Solution
The given molecule is nitrogen dioxide,
According to the periodic table, the atomic weight of one nitrogen atom is
Substitute the value of atomic weight of one nitrogen atom and oxygen atom in the above expression.
Thus, the molecular weight of the given molecule, nitrogen dioxide in
The molecular weight of the given molecule, nitrogen dioxide in
(b)
Interpretation:
The molecular weight of the given molecule in
Concept introduction:
The total number of protons and neutron which are present in an atom is collectively known as atomic mass of that atom. The total number of protons present in the nucleus of an atom is known as atomic number of that atom.
Answer to Problem 2.30E
The molecular weight of the given molecule, ammonia in
Explanation of Solution
The given molecule is ammonia,
According to the periodic table, the atomic weight of one nitrogen atom is
Substitute the value of atomic weights of nitrogen and hydrogen atoms in the above expression.
Thus, the molecular weight of the given molecule, ammonia in
The molecular weight of the given molecule, ammonia in
(c)
Interpretation:
The molecular weight of the given molecule in
Concept introduction:
The total number of protons and neutron which are present in an atom is collectively known as atomic mass of that atom. The total number of protons present in the nucleus of an atom is known as atomic number of that atom.
Answer to Problem 2.30E
The molecular weight of the given molecule, glucose in
Explanation of Solution
The given molecule is glucose,
According to the periodic table, the atomic weight of one hydrogen atom is
Substitute the value of atomic weights of hydrogen, oxygen and carbon atoms in the above expression.
Thus, the molecular weight of the given molecule, glucose in
The molecular weight of the given molecule, glucose in
(d)
Interpretation:
The molecular weight of the given molecule in
Concept introduction:
The total number of protons and neutron which are present in an atom is collectively known as atomic mass of that atom. The total number of protons present in the nucleus of an atom is known as atomic number of that atom.
Answer to Problem 2.30E
The molecular weight of the given molecule, ozone in
Explanation of Solution
The given molecule is ozone,
According to the periodic table, the atomic weight of one oxygen atom is
Substitute the value of atomic weight of one oxygen atom in the above expression.
Thus, the molecular weight of the given molecule, ozone in
The molecular weight of the given molecule, ozone in
(e)
Interpretation:
The molecular weight of the given molecule in
Concept introduction:
The total number of protons and neutron which are present in an atom is collectively known as atomic mass of that atom. The total number of protons present in the nucleus of an atom is known as atomic number of that atom.
Answer to Problem 2.30E
The molecular weight of the given molecule, ethylene glycol in
Explanation of Solution
The given molecule is ethylene glycol,
According to the periodic table, the atomic weight of one hydrogen atom is
Substitute the value of atomic weights of hydrogen, oxygen and carbon atoms in the above expression.
Thus, the molecular weight of the given molecule, ethylene glycol in
The molecular weight of the given molecule, ethylene glycol in
Want to see more full solutions like this?
Chapter 2 Solutions
Chemistry for Today: General, Organic, and Biochemistry
- An element X bas five major isotopes, which are listed below along with their abundances. What is the element? Isotope Percent Natural Abundance Mass (u) 46x 8.00% 45.95232 47x 7.30% 46.951764 48x 73.80% 47.947947 49x 5.50% 48.947841 50x 5.40% 49.944792arrow_forwardWhat number of molecules (or formula units) are present in 1.00 g of each of the compounds in Exercise 52?arrow_forward3.118 Consider common sugars such as glucose (C6H12O6) and sucrose (C12H22O11). What type of chemical bonding would you expect to find in these chemicals?arrow_forward
- What number of atoms of nitrogen are present in 1.00 g of each of the compounds in Exercise 51?arrow_forwardow many molecules of water are there in a 10.0-g sample of water? How many hydrogen atoms are there in this sample?arrow_forward8. Which of the following has a greater mass? A. 2.0 atoms of lead B. 5.1 x 1023 mole lithium Write the letter of your choice and support your answer with computations. No solution, no credit. 9. Stannous fluoride (SnF₂) is often added to toothpaste as an ingredient to prevent tooth decay. What is the mass of fluorine (in grams) in 24.6 g of the compound?arrow_forward
- An unknown compound E20, is 30.45% by mass of E. E is a nonmetal. Which of the following statements about E204 are TRUE? I. E,O4 is a covalent compound II. Any sample of E204 has the same percent composition by mass III. When the element E reacts with a metal it gains electrons IV. Element E is nitrogen Select one: O a. I and II O b.I and II O c. II O d. IV O e. All the statements are TRUEarrow_forward5. One carrot contains 0.75 mg of Vitamin A (C20H300) a) How many moles of Vitamin A is this? b) How many hydrogen atoms are in 0.75 mg of Vitamin A? c) What mass of hydrogen is in 0.75 mg of Vitamin A?arrow_forwardA 3.17 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 4.34 x 1022 N2O molecules. a. How many nitrogen atoms are in this sample? atoms b. How many nitrogen atoms are in 1.50 g of nitrous oxide? atomsarrow_forward
- 6. Which statement is NOT true regarding the molecule CSH3O6? a. One mole of CsH&O6 contains 6.02 x 1023 particles. b. One mole of CSH&O6 is equal to 164 g of CsH&O6. c. The molar mass of CSH8O6 is equal to one mole of CsHaO6. d. 84 g of CsHaO6 contains 6.02 x 1023 molecules.arrow_forwardCalculate the molecular mass for each of the following molecules: Ex: CO2 Element Molar Mass #Ihave Total (periodic table)x %3D C. 12 g x 1 = 12g 16 g 2 D 32 g Total 44 g 1. N2O2 2. LizS 3. NH OH 4. Al(CN)3 5. Sra(PO4)2arrow_forwardDetermine the number of moles of phosphorus in 7.722 g of Zn3(PO4)2. [Mr (Zn3(PO4)2) = 386.1 g mol–1] a. 2 mol b. 386.1 g mol–1 c. 4.000 × 10–2 mol d. 2.000 × 10–2 molarrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning