How do you tell if a reaction is endothermic or exothermic using only the written formula

Under constant temperature, the volume occupied by a gas varies inversely to the pressure applied. If the gas occupies a volume of 24 cubic inches under a pressure of 5 pounds per square inch, find the volume when the gas is subjected to a pressure

1. Write the molecular equation, ionic equation, and net ionic equation for the reaction between calcium chloride and ammonium phosphate.

Which of the following could result from a substance that undergoes a physical change? a) Its chemical composition is altered. b) It has an irreversible change. c) It forms a new substance. d) Its shape is altered.

What do scientists use to measure the volume of a substance?

If 0.492 moles of a substance weighs 56.2 g, what is the molar mass of the substance in units of g/mol?

State one major difference between having a nitrogen atom in a ring structure and having an oxygen atom in that structure

Can dowels be chopsticks, since both of them are wood?

Which electron configuration represents the electrons in an atom of Ga in an excited state?

Why are there so many volcanoes in and around japan

A liquid fuel mixture contains 30.35% hexane (c6h14), 15.85% heptane (c7h16), and the rest octane (c8h18). what maximum mass of carbon dioxide is produced