A student wants to examine a substance without altering its composition. Which of the following describes a property of the substance that the student should examine

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?