Which of the following is an anion?

A. O^2-

C. Al^3+

D. H

How many energy levels does sulfur have? A. 2 B. 3 C. 4 D. 14

What is the chemical formula for the first carbohydrate molecule shown?

Vinegar is a solution of acetic acid (the solute) in water (the solvent) with a solution density of 1010 g/L. If vinegar is 0.80 M acetic acid, what is the % by mass concentration of acetic acid in vinegar?

Maya wants to describe the climate in Naples fl, where she lives. Which sentence about climate is true?

The strand of gray hair discovered at the end of "A Rose for Emily" signifies that

A farmer has concerns about the nitrogen levels in her soils. What can she do to ensure that the nitrogen bacteria are replenished in the soil? Question 6 options: Clear cut the area surrounding the field.

The changing of gas to liquid

A very simple assumption for the specific heat of a crystalline solid is that each vibrational mode of the solid acts independently and is fully excited and thus cv=3NAkB=24.9 kJ / (kmol⋅K). This is called the law of Dulong and Petit.

How many elements are found in the following chemical equation? K + Cl → KCl A. 1 B. 2 C. 3 D. 0

How many liters of 0.85 M HCl solution would react completely with 3.5 moles Ca (OH) 2?