What is a substance that has mass and volume

Two flasks of equal volume have been joined by a narrow tube of negligible volume. initially both flasks are at 300K containing 0.60 mol of O2 gas at 0.5 atm pressure. One of the flasks is then placed in a thermostat at 600K.

Which statement is true about the particles of a solid when the solid changes into a liquid? 1) They stop vibrating. 2) Their kinetic energy increases. 3) They move closer to each other. 4) The attractive force between them increases.

Which statement is true? A. Species with similar evolutionary histories are not classified together. B. Species with different evolutionary histories are classified more closely together. C.

Which compound is an exception to the octet rule? H2O HCl CCl4 ClF3

How are coals and ores mined

Why is it important for us to study outer space?

What is the correct noble gas configuration of chlorine

A flask of fixed volume contains 1.00 mole of gaseous carbon dioxide and 88.0 g of solid carbon dioxide. the original pressure and temperature in the flask is 1.00 atm and 300. k. all of the solid carbon dioxide sublimes.

Oxygen is in group 16 of the periodic table. An oxygen ion (O2-) has a charge of - 2. Which of the following would be most likely to combine with an oxygen ion to form a new compound?

How and why - Why does ice float on water