A Subatomic particle that has negative charge is called an

A certain substance X decomposes. It is found that 50% of X remains after 100 minutes. How much X remains after 200 minutes if the reaction order with respect to X is a) zero order b) first order c) second order

How is the modern periodic table arranged? a. by atomic weight, with chemical families or groups in columns and periods in rows. b. by atomic weight, with chemical families or groups in rows. c.

What source provides most of the energy consumed in the United States?

Of the elements pt v li and kr which is a nonmetal

Is it correct to say that only one observable change accompanies a chemical change?

A gas in a rigid container is heated so that it's kelvin temperature doubles. What happens to its pressure

Common cause of biological contamination

Whcih kind if material would best accomplish this task

List at least two chemical reactions that resulted in a yellow, orange, or red precipitate. For these reactions, list the possible chemical name of the precipitate.

You place air in a sealed can at stp. ypu triple its absolute temperture (K) while leaveing the volume constant. what happenes to the pressure