Why does an oil-and-vinegar salad dressing have two separate layers?

Ten students stand in a circle and are told to make a transverse wave. What best describes the motion of the students? Each student bumps the shoulder of his or her neighbor.

Samantha bought 450 rolls of toilet paper for her family to use while they are stuck at home. There are 4 people in her family.

What determines the exact temperature of the air

What happens to a substance if it is oxidized during a chemical reaction? What is a reducing agent, and how would you identify it in a chemical reaction?

What is chemistry and how is it different from biology

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.