1. Given the gaseous reaction between methane and water forming carbon monoxide and hydrogen: CHa(8) + H20(8) + CO(g) + 3H2(g) the system is at equilbrlum Tell in which direction the equllibrium will shift when: a) Temperature is raised b) Pressure is increased c) Pressure is decreased

A chemistry student must write down in her lab notebook the concentration of a solution of potassium chloride. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 1.55 g • She put some solid potassium chloride into the graduated cylinder and weighed it. With the potassium chloride added, the cylinder weighed 31.436 g. • She added water to the graduated cylinder and dissolved the potassium chloride completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 166.4 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits. -1 g.mL x10 × Ś

What area of study in chemistry is concerned with the heat transfers that occur during chemical reactions? b. thermochemistry c. calorimetry a. Stoichiometry The law of conservation of energy states that a. in any chemical or physical change, energy cannot be created or destroyed, only changed in form. b. heat changes occur during chemical and physical changes. c. energy is the capacity to do work or to supply heat d. there are two types of energy, kinetic and potential d. thermodynamics

Sublimation: 670 Pergram A C E D F 8Ocal Solid Gas Liquid G eva Poratia H Condensatia