18.2 g of a basic solution was mixed with 31.1 g of an acidic solution in a calorimeter with a calorimeter constant of 76.8 J K–1 with all substances initially at 27.8 °C. The resulting solution was observed to be at a temperature of 54.2 °C and have a heat capacity of 4.59 J g–1 K–1.
Determine q for the mixing process.

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

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.

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.