(a)
Interpretation: The authenticity of the given statement is to be determined.
Concept introduction: The alkali metals occur in the combined state and occur in the minerals in the earth’s crust.
The melting point of gallium is
Reaction of calcium with water is,
Reaction of aluminum trichloride with water is,
Lithium reacts in the presence of oxygen as,
To determine: The authenticity of the statement, “Phosphoric acid is a stronger acid than nitric acid.”
(b)
Interpretation: The authenticity of the given statement is to be determined.
Concept introduction: The alkali metals occur in the combined state and occur in the minerals in the earth’s crust.
The melting point of gallium is
Reaction of calcium with water is,
Reaction of aluminum trichloride with water is,
Lithium reacts in the presence of oxygen as,
To determine: The authenticity of the statement, “The noble gas with the lowest boiling point is helium.”
(c)
Interpretation: The authenticity of the given statement is to be determined.
Concept introduction: The alkali metals occur in the combined state and occur in the minerals in the earth’s crust.
The melting point of gallium is
Reaction of calcium with water is,
Reaction of aluminum trichloride with water is,
Lithium reacts in the presence of oxygen as,
To determine: The authenticity of the statement, “Sulfur is found as the free element in the earth’s crust.”
(d)
Interpretation: The authenticity of the given statement is to be determined.
Concept introduction: The alkali metals occur in the combined state and occur in the minerals in the earth’s crust.
The melting point of gallium is
Reaction of calcium with water is,
Reaction of aluminum trichloride with water is,
Lithium reacts in the presence of oxygen as,
To determine: The authenticity of the statement, “One of the atoms in Teflon is fluorine.”
(e)
Interpretation: The authenticity of the given statement is to be determined.
Concept introduction: The alkali metals occur in the combined state and occur in the minerals in the earth’s crust.
The melting point of gallium is
Reaction of calcium with water is,
Reaction of aluminum trichloride with water is,
Lithium reacts in the presence of oxygen as,
To determine: The authenticity of the statement, “The
Want to see the full answer?
Check out a sample textbook solutionChapter 19 Solutions
Chemistry: An Atoms First Approach
- The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of sodium azide, which produces large volumes of nitrogen gas. 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid sodium azide (NaN3) into solid sodium and gaseous dinitrogen. 1 2. Suppose 64.0 L of dinitrogen gas are produced by this reaction, at a temperature of 16.0 °C and pressure of exactly 1 atm. Calculate the mass of sodium azide that must have reacted. Be sure your answer has the correct number of significant digits. 08 0-0 00arrow_forwardThe airbags that protect people in car crashes are inflated by the extremely rapid decomposition of sodium azide, which produces large volumes of nitrogen gas. 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid sodium azide (NaN3) into solid sodium and gaseous dinitrogen. 0 2. Suppose 25.0 L of dinitrogen gas are produced by this reaction, at a temperature of 15.0 °C and pressure of exactly 1 atm. Calculate the mass of sodium azide that must have reacted. Round your answer to 3 significant digits. ローロ 010 X 00 09 3arrow_forwardComplete and balance the following direct union equations. please answer all a. K + Br2 → b. Mg + O2 → c. H 2 + Br2 → d. Na + I2 → e. CaO + SO2 →arrow_forward
- What is the valence electron configuration for Group 4A elements? Group 4A contains two of the most important elements on earth. What are they, and why are they so important? How does metallic character change as one goes down Group 4A? Why is the chemistry of carbon dominated by bonds, whereas that of silicon is dominated by bonds? What are the two allotropes of carbon?arrow_forwardBriefly explain (in one or two sentences) the following observations: a. TIH is stable but TIH3 is not. b. SiF4 reacts with water but CF4 does not. c. HCl can be formed from H₂ and Cl₂ but HI cannot be synthesized from H₂ and I2. SiH4 rapidly reacts with water to produce H₂ and SiO2, in a manner very similar to the reaction between SiCl4 and H₂O. a. Write balanced equation for the reaction between SiH4 and H₂O that produces SiO2 and H₂. b. Is this a redox or acid-base reaction? c. Draw a clear mechanism of the first step in the reaction showing clear structures of reactants, intermediates and the products.arrow_forwardWhich statement regarding oxides is true? Correct the false statements. A. CaO is an acidic oxide because Ca2+ acts as an acid when CaO reacts with H2.B. CO2 is an acidic oxide because CO2 ionizes in H2O and O2– acts as a Lewis acid.C. MgO is a basic oxide because Mg2+ can act as a Lewis base.D. Amphoteric oxides behave as acidic oxides in the presence of H3O+.E. None of the above statements are true about oxides.arrow_forward
- What is the 'electron group geometry' for the carbon in phosgene (Cl2C=O)? Select one: a. octahedral b. trigonal planar c. linear d. trigonal bipyramidal e. tetrahedralarrow_forwardWhat is the molecular structure for each of the following molecules or ions? a. OCl2 b. ClO4- c. ICl5 d. PF6arrow_forwardWhich of the following statements is incorrect? a. Metals react with oxygen in the air to metal oxide. b. Metal oxides form acids with water. c. Metals react with halides to form salts. d. Active metals release hydrogen from acids.arrow_forward
- 23. Molybdenum has a BCC crystal structure, an atomic radius of 0.1363 nm, and an atomic weight of 95.94 g/mol. The theoretical density.is O11.21 g/cm3 O 12.21 g/cm3 O 13.21 g/cm3 O 10.21 g/cm3arrow_forwardThe compound NF3 is quite stable, but NCl3 is very unstable (NCl3 was first synthesized in 1811 by P. L. Dulong, who lost three fingers and an eye studying its properties). The compounds NBr3 and NI3 are unknown, although the explosive compound NI3 NH3 is known. Account for the instability of these halides of nitrogen.arrow_forward
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStaxChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning