Answer:
3.33%
Step-by-step explanation:
9.90/300=0.033
Combine like terms to get -4x^2-2x
Whats the question?
Sorry but can't answer if theres no question
<h3>
Answer: C) nonmetal</h3>
This element has 8 protons, so element is oxygen. I recommend looking at the periodic table of elements. At standard temperature and pressure (STP), oxygen is a gas, so that puts it in the nonmetal category.
Side note: Metalloids are a collection of elements where they share properties of metals and nonmetals (in a way they're on the fence).
