What is an element? Name three elemants.

Which is the most important value of a graph

Structural formula and type of reaction for each a) 4-nonene and fluorine b) hexane and oxygen gas c) pentanol and butanoic acid d) propane and hydrogen gas

What best explains the type of energy present in the wheels of a moving bus

175 mL of Cl2 gas is held in a flexible vessel at STP. If the vessel is transported to the bottom of the impact basin Hellas Planitia on the surface of Mars where the pressure is 1.

What is the total number of electron pairs that are shared between the two carbon atoms in a molecule of ethyne? (1) 1 (3) 3 (2) 2 (4) 4

A conical, flat-bottomed flask with a narrow neck that can be used for heating, mixing, watching reactions, and swirling, not for measuring

Answer 1. the law of conservation of mass states that mass is neither created nor destroyed in an ordinary chemical reaction. when an iron nail rusts, it seems to get heavier in mass. does the iron nail follow the law of conservation of mass?

Ammonia (NH3) burns in air to form nitrogen dioxide and water. Calculate grams of nitrogen dioxide produced if 4.0 grams of ammonia are consumed

What year did mendeleev organized his periodic table in order of increasing atomic number

What is the volume of 1.9 moles of chlorine gas (Cl2) at standard temperature and pressure (STP) ? 12 L 22.4 L 43 L 81 L