What is the purpose of a hypothesis?

a.
it specifies the procedure for a scientific experiment.

b.
it is a prediction of whether an experiment will give useful results.

c.
it tells other scientists what kind of research they should be doing.

d.
it is a possible answer with an explanation for a scientific question.

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above