The universe is made up of (lol)

A. millions of stars

B. Hundreds of stars

C. thousands of stars

D. billions of stars

Which component is affected when a catalyst is added to a chemical reaction? A.) the amount of substrate B.) the activation energy C.) the amount of product D.) the concentration of reactants

Why should there be a connection between an element's electron configuration and its location of the periodic table?

Which description of salt is a chemical property?

How many grams of NaCl are in 0.7L of a 3M solution?

How many valence electrons are in Al^3+?

Why are atoms always neutral

Question: Ron is a healthcare worker who needs to lift a heavy patient. Which kind of safety issue does this scenario relate to? A infection B. ergonomics C. human resources D. orientation

Which of the following is the best example of chemical weathering? (A) limestone rocks dissolving in water (B) plant roots growing through concrete and splitting it (C) waves carrying sand away from a beach (D) a large rock splitting into pieces

Is heat of fusion an extensive or intensive property? Why?

How many moles of oxygen gas are produced from the decomposition of six moles of potassium