What is a claim for why do some things stop while others keep going?

What is formed from a metal and a non-metal

1. Most of the earth's surface is covered with

How many moles are in 40.0g of CO 2

John weighs 115 kg. Sally weighs 115 lb. Who is heavier of the two?

Indicated by formation of a gas, precipitate, release of heat, or a color change

Sodium chloride was dissolved in water to produce a 1.5M solution. Explain what this concentration tells us about the NaCl solution. How might a chemist use this ratio?

A gas is contained in a 5.0-liter container at a pressure of 100 kPa. What size container would be required to contain the gas at a pressure of 50 kPa, assuming the temperature remains constant?

Select the correct answer. What is the chemical name of the covalent compound p4S3 A. tetraphosphate trisulfide B. triphosphate tetrasulfide tetraphosphorus trisulfide D. quadriphosphide trisulfur E. quadriphosphorus trisulfide Reset

A student doing this experiment obtained the data shown in the table above. The value of the constant, k, for this data is

A fuel scientist burnt a piece of coal and a piece of wood to compare the amount of heat given off by each.