Question 1

Which of the following is the correctly balanced equation for the combustion of propane ($$\mathrm{C_3H_8}) in $$oxygen?

Accepted Answer

$$\mathrm{C_3H_8} + 5\mathrm{O_2$} \rightarrow 3\mathrm{CO_2$} + 4\mathrm{H_2O}$$

Question 2

Which of the following is an example of a redox reaction?

Accepted Answer

$$\mathrm{2Na} + \mathrm{Cl_2$} \rightarrow 2\mathrm{NaCl}$$

Question 3

A sample of gas occupies $$4.00\ \mathrm{L} at$$ $$1.00\ \mathrm{atm}$$ and $$300\ \mathrm{K}. $$What will be its volume at $$2.00\ \mathrm{atm}$$ and $$300\ \mathrm{K}$$?

Accepted Answer

$$2.00\ \mathrm{L}$$

Question 4

Which of the following is the correct nuclear symbol for an isotope of carbon with 7 neutrons?

Accepted Answer

$$^{13}_{6}\mathrm{C}$$

Question 5

Which of the following compounds is named correctly?

Accepted Answer

$$\mathrm{Na_2SO_4}$$: sodium sulfate

Question 6

Which of the following elements is NOT diatomic in its natural state?

Accepted Answer

Neon ($$\mathrm{Ne})$$

Question 7

What is the molar mass of $$\mathrm{Ca(OH)_2}$$?

Accepted Answer

$$74.10\ \mathrm{g/mol}$$

Question 8

How many grams of $$\mathrm{NaCl}$$ are in $$2.00$$ moles? ($$\mathrm{Na} = 22.99$$, $$\mathrm{Cl} = 35.45)$$

Accepted Answer

$$116.88\ \mathrm{g}$$

Question 9

Which of the following best describes the geometry of methane ($$\mathrm{CH_4$}$$)?

Accepted Answer

Tetrahedral

Question 10

Which of the following is a correct conversion factor for the balanced equation: $$2\mathrm{H_2$} + \mathrm{O_2$} \rightarrow 2\mathrm{H_2O}$$?

Accepted Answer

$$\dfrac{2\ \mathrm{mol}\ \mathrm{H_2O}}{2\ \mathrm{mol}\ \mathrm{H_2$}}$$

Question 11

Which of the following best describes the bond in $$\mathrm{NaCl}$$?

Accepted Answer

Ionic bond

Question 12

A patient receives $$0.500\ \mathrm{mol} of $$glucose ($$\mathrm{C_6H_{12}O_6$}) $$intravenously. What mass of glucose did the patient receive? ($$\mathrm{C} = 12.01$$, $$\mathrm{H} = 1.01$$, $$\mathrm{O} = 16.00)$$

Accepted Answer

$$90.08\ \mathrm{g}$$

Question 13

Which of the following is the correct formula for aluminum oxide?

Accepted Answer

$$\mathrm{Al_2O_3}$$

Question 14

Which of the following is a single replacement reaction?

Accepted Answer

$$\mathrm{Zn} + 2\mathrm{HCl} \rightarrow \mathrm{$$ZnCl_2$$} + \mathrm{H_2$}$$

Question 15

Which of the following statements about oxidation and reduction is correct?

Accepted Answer

Oxidation is the loss of electrons; reduction is the gain of electrons.

Question 16

A sample of nitrogen gas ($$\mathrm{N_2$}) $$has a pressure of $$760\ \mathrm{mmHg}. $$What is this pressure in atmospheres?

Accepted Answer

$$1.00\ \mathrm{atm}$$

Question 17

Which of the following molecules contains a polar covalent bond?

Accepted Answer

$$\mathrm{H_2O}$$

Question 18

How many moles are in $$36.0\ \mathrm{g} of $$water ($$\mathrm{H_2O}$$)? ($$\mathrm{H} = 1.01$$, $$\mathrm{O} = 16.00)$$

Accepted Answer

$$2.00\ \mathrm{mol}$$

Question 19

Which of the following best describes the geometry of carbon dioxide ($$\mathrm{CO_2$}$$)?

Accepted Answer

Linear

Question 20

A reaction requires $$3.0\ \mathrm{mol} of$$ $$\mathrm{O_2$} to $$completely react with $$6.0\ \mathrm{mol} of$$ $$\mathrm{H_2$}. $$What is the balanced equation for this reaction?

Accepted Answer

$$2\mathrm{H_2$} + \mathrm{O_2$} \rightarrow 2\mathrm{H_2O}$$

CHM 1032 Exam 2 Study Guide: Chemical Reactions, Stoichiometry, Gases, and Bonding

Guida di studio - Domande di pratica

Study guide - Flashcard