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Chapter 2: Q29E (page 128)

Write the molecular and empirical formulas of the following compounds:\(\begin{aligned}{}a)O = C = O\\b)H - C \equiv C - H\end{aligned}\)

c)

(d)

Short Answer

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a) Molecular formula: CO2

Empirical formula: CO2

b) Molecular formula: C2H2

Empirical formula: CH

c) Molecular formula: C2H4

Empirical formula: CH2

d) Molecular formula: H2SO4

Empirical formula: H2SO4

Step by step solution

01

Determine the definition of molecular formula

A molecular formula is a representation of a molecule that uses chemical symbols to indicate the type of atoms. It is also used as abbreviations for the names of compounds. Molecular formula of the given compounds will be

a) Molecular formula: CO2

b) Molecular formula: C2H2

c) Molecular formula: C2H4

d) Molecular formula: H2SO4

02

Determine the definition of empirical formula

Empirical formula indicates the types of atoms present and the simplest whole-number ratio of the number of atoms (or ions) in the compound. Empirical formula of the given compounds will be

a) Empirical formula: CO2

b) Empirical formula: CH

c) Empirical formula: CH2

d) Empirical formula: H2SO4

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Most popular questions from this chapter

Predict and test the behavior of α particles fired at a “plum pudding” model atom.

(a) Predict the paths taken by α particles that are fired at atoms with a Thomson’s plum pudding model structure. Explain why you expect the α particles to take these paths.

(b) If α particles of higher energy than those in (a) are fired at plum pudding atoms, predict how their paths will differ from the lower-energy α particle paths. Explain your reasoning.

(c) Now test your predictions from (a) and (b). Open the Rutherford Scattering simulation (http://openstaxcollege.org/l/16PhetScatter) and select the “Plum Pudding Atom” tab. Set “Alpha Particles Energy” to “min,” and select “show traces.” Click on the gun to start firing α particles. Does this match your prediction from (a)? If not, explain why the actual path would be that shown in the simulation. Hit the pause button, or “Reset All.” Set “Alpha Particles Energy” to “max,” and start firing α particles. Does this match your prediction from (b)? If not, explain the effect of increased energy on the actual paths as shown in the simulation.

Give the number of protons, electrons, and neutrons in neutral atoms of each of the following isotopes:\(\begin{aligned}{}\left( a \right){\rm{ }}{}_3^7Li{\rm{ }}\\\left( b \right){\rm{ }}{}_{52}^{125}Te{\rm{ }}\\\left( c \right){\rm{ }}{}_{47}^{109}Ag{\rm{ }}\\\left( d \right){\rm{ }}{}_7^{15}N{\rm{ }}\\\left( e \right){\rm{ }}{}_{15}^{31}P\end{aligned}\)

Write the empirical formula for the following compounds:

Determine the empirical formulas for the following compounds.

a. acetic acid, C2H4O2

b. citric acid, C6H8O7

c. hydrazine, N2H4

d. nicotine, C10H14N2

e. butane, C4H10

For each of the following compounds, state whether it is ionic or covalent, and if it is ionic, write the symbols for the ions involved:

  1. \(KCl{O_4}\)
  2. \(Mg{\left( {{C_2}{H_3}{O_2}} \right)_2}\)
  3. \({H_2}S\)
  4. \(A{g_2}S\)
  5. \({N_2}C{l_4}\)
  6. \(Co{\left( {N{O_3}} \right)_2}\)
See all solutions

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