What is the mass of 8.12 x 10^23 molecules of co2

Which phase change at standard temperature and pressure represents sublimation?

How to balance the chemical equation of Al (S) + CuO (S) >Al2O3 (S) + Cu (S)

How many boxes of a would be required to make 30 grams of c

Salivary amylase is an enzyme produced by the salivary glands that breaks down carbohydrates. What will happen to this enzyme as it follows the food into the stomach where the ph drops to 2.5?

What do Potassium and Krypton have in common and what are their differences based on their location on the periodic table? Potassium (K) and Krypton (Kr) on in the same period, so they have the same number of electron shells.

Is human cloning forbidden and why?

What do we beileve is at the center of the milky way A) two stars that have collided together B) a cluster of stars C) A black hole D) A collapsed planet

Why is science important?

5.4x10^3x1.2 x 10^7 in scientific notation

Why dont we use words like prove or does not prove in science