Which two properties are more typical of molecular compounds than of ionic compo
ID: 1021615 • Letter: W
Question
Which two properties are more typical of molecular compounds than of ionic compounds? They are gases or liquids at room temperature. They have high melting points. Solids do not conduct electricity, but liquids do. Atoms share electrons. a. 1 and 4 b. 1 and 3 c. 2 and 3 d. 2 and 4 e. 3 and 4 Calculate the pOH for a solution with [H_30^+] = 3.1 times 10^9 M a. 3.10 b. 10.90 c. 8.51 d. 5.49 e. 3.2 times 10^-6 The half life for a first order reaction is 27 min. How long will it take for 4 half lives to occur? a. 52,000 min b. 108 min c. 81 min d. 260 min e. Not enough information given Based on the following options, select the substance with hydrogen in the + 1 oxidation state. a KH b. CH_4 c. H_2 d. AlH_3 e. SrH_2 Which of the following phase changes is endothermic? a. Sublimation b. Condensation c. Freezing d. Deposition The electron configuration of a Cr^3+ ion is a.[Ar]3d^5. b.[Ar]4s^13d^2. c. [Ar]3d^3 d. [Ar]4s^13d^5. e. [Ar]4s^23d^4. What is the osmotic pressure of a solution that contains 13.7 g of propyl alcohol (C_3H_2OH) in enough water to make 500. mL of solution at 27 degree C? a. 0.0100 atm b. 0.0140 atm c. 0.0370 atm d. 0.456 atm e. 11.2 atmExplanation / Answer
30. Answer:option a
Molecular or covalent Compounds consist of molecules which are formed by covalent bonding i.e electron sharing between elements.
Due to presence of weak forces of attraction between molecules theese are generally liquid or gases
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