Calculate the minimum volume of oxygen gas, at room temperature and pressure(r. t.p). required to completely burn 56g of methane gas. Give your answer to two significant figures. (1 mole of any gas occupies 24 dm³ at r. t.p, Ar:C=12,H=1) BALANCED EQUATION FOR THE BURNING OF METHANE GAS.

CH₄+2O₂→CO₂+2H₂O

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.