What term best describes the rate of radioactive decay for a particular radioactive element?

A. fast

B. slow

C. variable

D. constant

Explain and give a specific example of physical evidence that indicates that Earth's continents have moved over time.

What is the hydronium h3o + concentration of a solution with a pH pf 3

Which substances dissolves in pure water and produces a solution that is a good conductor of electricity? 1) CaCl2 2) C6H12O6 3) N2 4) O2

In a laboratory experiment, John uses a mesh to separate soil particles from water. Which technique of separation is he using? A. chromatography B. distillation C. filtration D. condensation

Which of the following is a testable hypothesis? A) The Harry Potter books are better than the Nancy Drew books. B) More 10-year-olds prefer riding bikes to playing video games, but more 13-year-olds prefer video games.

Anyone wanna talk dirty with me

Ludwig Boltzmann developed a model that relates entropy to: Select the correct answer below: a. the spontaneous heat flow accompanying a process to the temperature at which the process takes place b.

Calculate the work associated with the compression of a gas from 121.0 l to 80.0 l at a constant pressure of 16.7 atm. a. 685 l atm b. - 685 l atm c. 2.46 l atm d. - 2.46 l atm e. 101 l atm

How do find the volume of 60.0g of ether if the density is. 70g/mL?

Did the test solution react with the supernatant from the test tube that had the largest amount of precipitate? what can you infer about the molar ratio of this reaction?