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Oxygen is best described as a _____.

What is the electron configuration for Scandium 2+ ion (Sc2+)?

What is the formula unit mass of ammonium sulfate (NH4)2SO4?

This is a ball-and-stick model representation of a molecule of acetone. What is the chemical formula for this molecule? C[number1]H[number2]O

Elements such as boron, silicon, and arsenic, are examples of:

One isotope makes up 97% of all calcium atoms.  Which one?

Which of these is considered a cultural stressor to plant systems?

You have measured an area of land consisting of the following shapes: a square with a length of 12 feet and a height of 12 feet a rectangle with a length of 20 feet and a height of 18 feet a triangle with a base of 12 feet and a height of 18 feet. The herbicide you plan to use requires 1 pint per 1,000 square feet. How much product, in quarts, will you need to treat the area?

Oxygen-18 has _____ protons, _____, neutrons, and _____ electrons.

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