Write a chemical formula for the compound containing one carbon atom for every four bromine atoms.

A steak is cooked on the grill. this is an example of a: a. physical change. b. chemical change.

Based on the kinetic theory, which statement is true? A. Matter consists of only large molecules. B. Matter is made up of only charged particles. C. The particles of matter have zero kinetic energy and potential energy. D.

In laboratory, your TA makes a statement about the toxicity of the fumes of a reaction. What does the term toxicity mean? A. The sum of adverse effects resulting from exposure to a material, normally by the mouth, skin, or respiratory tract. B.

What is the enthalpy for reaction 1 reversed? reaction 1 reversed: co2→co + 12o2 express your answer numerically in kilojoules per mole?

What is the molar mass of 81.50 g of gas exerting a pressure of 1.75 ATM on the walls of a pressure or 1.27 ATM on the walls of 4.92 L container of 307 k?

7. A 2.0 L container had 0.40 mol of He (g) and 0.60 mol of Ar (g) at 25°C. Which gas has a greater average kinetic energy? Which gas is traveling at a higher average speed? If Ar has an average speed of 431 m/s, what is the average speed of He?

Which of the following will allow more solute to be dissolved in a solvent? Choose all that apply. * Adding more solute Cooling the solution Agitating the solution Adding heat Using larger crystals

Calculate the average bond order for a p-o bond (such as the one shown in blue) in a phosphate ion.

Match the vocabulary terms to their definitions. 1. standard metric unit of length mass 2. a proposed explanation for a scientific problem hypothesis 3. standard unit of volume liter 4. the curved top surface of a liquid column control 5.

The speed at which any planet moves through space is constantly changing. In a perfectly circular orbit, the orbital radius of the planet would be constant and therefore so would be its observed angular velocity.