For the complete combustion of 1.000 mole of methane gas at 298 k and 1 atm pressure, δh° = -890.4 kj/mol. what will be the amount of heat released when 1.97 g of methane is combusted under these conditions?

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.