Spinning sugar into cotton candy is a chemical change.

A sample of oxygen gas has a volume of 36.7 L at 145 kPa and 65. ̊C. What volume will the sample have at STP?

Janet wanted to see how much cooler the temperature was at night compared to during the day. What to should she use?

What is the most appropriate unit of astronomical distance to represent the distance between an earth an orbiting space station and neptune?

Explain why oil is called a fossil fuel.

A considerable amount of heat is required for the decomposition of aluminum oxide. 2 al2o3 (s) â 4 al (s) + 3 o2 (g) Î'h = 3352 kj (a) what is the heat change for the formation of 1 mol of aluminum oxide from its elements?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container

What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N?

What is the lowest layer of the atmosphere and what is its highest altitude?

An atom that has 84 protons and 86 neutrons undergoes a reaction. At the end of the reaction, it has 82 protons and 84 neutrons. What happened to the atom?

A compound of material formed by a chemical is known as?