3. How much of the Earth's mass is in the core?

An ice cube is dropped into a glass of milk at 20°C. Which statement explains the transfer of kinetic energy (KE) ? A) Because milk has higher KE than ice, KE is transferred from the milk to the molecules of ice.

an element has atomic numer 10 and an atomic mass of 20. how many neutrons are in the atom of this element

Which of the statements was not a part of Dalton's original atomic theory? a. Atoms of the same element have the same size, mass, and structure. b. Atoms cannot be created or destroyed in a chemical reaction. c.

A piece of metal with a mass of 125 g is placed into a graduated cylinder that contains 25.00 ml of water, raising the water level to 56.00 ml. What is the density of the metal?

Select all that apply. Which of the following are characteristics of bases. contain hydroxide ion or produce it in a solution taste bitter feel slippery produce hydronium ion in a solution

Which of the following is true about the relationship between the energy gap (∆E) between the spin states for a 1H nucleus and the strength of the external magnetic field?

Why does a neutral solution have a of 7.0? In a neutral solution, the [H3O+]=1*10^-7 at 25∘C. pH=-log[1*10^-7]=7.0. In a neutral solution, the [H3O+]=1*10^7 at 25∘C. pH=log[1*10^7]=7.0. In a neutral solution, the [H3O+]=1*10^14 at 25∘C. pH=0.

Which type of bond would most likely be found in HBr

Which halogen is most likely to react? a. Br (bromine) b. F (fluorine) c. I (iodine) d. Cl (chlorine)

In the formula for water (H2O) what does the subscript 2 indicate?