Question 1

A sample of 0.250 mol of hydrogen reacts with 0.125 mol of oxygen to form water. What is the limiting reactant and how many grams of water are produced? Use $$2H_2(g) + O_2$(g) \rightarrow 2H_2O(l).$$

Accepted Answer

Limiting reactant: $$O_2$$; Water produced: $$4.50 g$$

Question 2

Which of the following is an example of an intensive property?

Accepted Answer

Density

Question 3

Which of the following best describes the group of elements shaded in the periodic table below (transition metals block)?

Accepted Answer

Metals

Question 4

A compound has a molecular mass of $$18 g/$$mol. The empirical formula was determined to be $$CH_2O. $$What is the molecular formula of the compound?

Accepted Answer

$$CH_2O$$

Question 5

Which of the following is the correct electron configuration for the ground state of iodine ($$I$$)?

Accepted Answer

$$[Kr] 4d$$^{10}$$ 5s^2$ 5p^5$

Question 6

Which of the following molecules contains the most easily broken carbon-carbon bond?

Accepted Answer

$$CH_2$$=$$CH_2$$

Question 7

Which of the following is the correct formula for titanium dioxide?

Accepted Answer

$$TiO_2$$

Question 8

A sample of $$C_6H_{12}O_6$ with a mass of 52.0$ g would occupy a volume of 0.029$ L. What is the density of glucose in g/mL$?

Accepted Answer

$$1.8$$ $$g/mL$$

Question 9

Which of the following is the correct net ionic equation for the reaction in water of $$CaCl_2$$ and $$Na_2CO_3$$?

Accepted Answer

$$Ca^{2+}(aq$$) + $$CO_3$$^{2-}(aq) \rightarrow $$CaCO_3(s$$)$$

Question 10

Which of the following is the correct oxidation state for chromium in $$Cr_2O_7$$^{2-}$$?

Accepted Answer

$$+6$$

Question 11

Which of the following molecules is polar?

Accepted Answer

$$CH_3Cl$$

Question 12

Which of the following is the correct Lewis structure for $$OCl_2$$?

Accepted Answer

O with two single bonds to Cl, and two lone pairs on O, each Cl with three lone pairs

Question 13

Which of the following is the correct electron configuration for the ground state of Ge ($$Z=32$$)?

Accepted Answer

$$[Ar] 3d$$^{10}$$ 4s^2$ 4p^2$

Question 14

Which of the following molecules would have the lowest boiling point?

Accepted Answer

$$CH_4$$

Question 15

Which of the following is the correct formula for carbon disulfide?

Accepted Answer

$$CS_2$$

Question 16

Which of the following is the correct name for $$Al_2O_3$$?

Accepted Answer

Aluminum oxide

Question 17

Which of the following is the correct molecular geometry for $$SF_4$$?

Accepted Answer

See-saw

Question 18

Which of the following is the correct hybridization for the central atom in $$CH_4$$?

Accepted Answer

$$sp^3$$

Question 19

Which of the following is the correct net ionic equation for the reaction between $$AgNO_3$$ and $$NaCl in $$aqueous solution?

Accepted Answer

$$Ag^+(aq) + Cl^-(aq) \rightarrow AgCl(s)$$

Question 20

Which of the following is the correct oxidation state for nitrogen in $$NO_3$$^-$$?

Accepted Answer

$$+5$$

General Chemistry I: Comprehensive Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard