An element is in group 2, period 3. How many valence electro

Broup 2, period 3. How many valence electrons does this element?

The only large land mass (es) not part of a sovereign state is/are

What is the property of a substance for ml

Nitric acid, which is among the top 15 chemicals produced in the United States, was first prepared over 1200 years ago by heating naturally occurring sodium nitrate (called saltpeter) with sulfuric acid and collecting the vapors produced.

5. Which of the following characteristics in a chemical reaction indicates that a precipitate has formed? a. The product changes c. The product becomes a color only liquid b. A gas is produced d. A solid is produced

Which of these experimental designs could lead to bias? A) Two mice are given the choice between Swiss and American cheese. B) Phil and Bart race down the street to determine who is the fastest.

Balance the following chemical equation: / text{CH}_ 4 + CH 4 + start text, C, H, end text, start subscript, 4, end subscript, plus / text{O}_ 2 / rightarrow 2 →start text, O, end text, start subscript, 2, end subscript, right arrow / text{CO}_2 +

How did the invention of the spectroscope in 1859 change the science of chemistry

Will zinc and sodium carbonate react?

What fraction of carbon 14 remains in an animal frozen in a glacier 18000 years ago?

How do you convert the number of molecules of a substance to the number of moles? a. add Avogardo's number b. subtract Avogardo's number c. multiply Avogardo's number d. devide Avogardo's number