Assume the half-life of a radioactive element is 250,000 years. if you start out with 16 grams of this element, how much will be left after 1.5 million years?

Describe one possible economic impact of redox reactions. How might that impact be diminished?

Which of the following concerning second ionization energies is true? A. That of Al is lower than that of Mg because Mg wants to lose the second electron, thus the energy change is greater. B.

Select the correct answer. Which sentence about particles in matter is true? O A. Atoms are present in solids and liquids but not in gases. O B. The particles of matter are in constant motion. OC.

What is a scientific explanation that can be tested?

Hola alguien me dise El numero de la ballena azul es que quierobhacerle bromas si alguien lo sabe digabmelo los espero

What is the molarity of a solution prepared by dissolving 33.4 g of sodium chloride in some water and then diluting the solution to a volume of 300.00 mL?

Think about how pressure relates to volume and how gas behavior would change in different volumes. Which of the following will have the largest positive value for Sº? A) 1 mole of helium gas at 1 atm pressure.

Does a reaction stop once it has reached equilibrium? Explain

8 l of water at 19 ∘c are mixed with 1.1 l of water at 47 ∘c in an insulated container. what is the final temperature of the system? express your answer in ∘c

How is wind deflation different from wind abrasion?