Name three elements that have been added to the periodic table since mendeleev's time

Name three of the most sensitive parts of your body (Appropriate parts. Ex: finger, wrist, shoulder, etc.)

A molecular biologist measures the mass of cofactor a in an average yeast cell. the mass is 41.5 pg. what is the total mass in micrograms of cofactor a in a yeast colony containing 105 cells? write your answer as a decimal.

In the reaction, 2h2 o2 - - > 2h2o, how many hydrogen molecules are needed to produce two water molecules? a. 1b. 2c. 3d. 4

As a ship is unloaded, why does it rise higher in the water? The buoyancy of the ship and its cargo decreases. The mass of the ship and its cargo increases. The density of the ship and its cargo increases.

Indications of a chemical change include light, heat, and gas production.

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?

1. Why does CH30 evaporate faster than water?

How does concentration affect our daily lives in science?

How many nitrogen atoms are in 2.79 mo. of NH3

What is the chemical formula for polysaccharide?