In a classroom, which comparison would a teacher most likely use for describing a mole?

a cup of water and a liter of oil

a dozen eggs and a dozen jellybeans

a jar of jellybeans and a gram of salt crystals

20 marbles in a bag and 10 large ice cubes

Evaporation is a process that requires energy to occur. Evaporation is a (n) reaction.

What is the atomic number for magnesium

In two or more complete sentences explain how to balance the chemical equation and classify its reaction type. __P4+_02 - P203

How many atoms of magnesium are in 1.00 gram?

What is monochromatic light

What is the molarity of a solution that has 548 grams of HCl dissolved in 1.50 l water?

Steve puts some cheddar cheese in a pan on the stove and starts to melt it. After a little while, there is a layer of oil floating on top of the cheese. From the way the cheese melted, Steve knows it is a A Element B Solid C Mixture D Pure Substance.

Which experimental feature of the MALDI-MS technique allows the separation of ions formed after the adduction of tissue molecules? A) Distance travelled by ions depends on the ion charge. B) Velocity of ions depends on the ion mass-to-charge ratio.

Which temperature is required for the cell potential to be the standard cell potential? A) - 273°C B) 100°C C) 25°C D) 0°C

1. the purpose of the aqueous solutions in a galvanic cell is to? a. provide ions to be oxidized and reduced b. provide a path for the free flow of electrons c. maintain charge balance in the cell d. correct any volume changes in the cell 2.