The half life for the decay of radium is 1620 years what is the rate constant

I need the answers for the element builder gizmo by explore learning

Is [h3o + ] = 1.0 * 10-7 m true of acidic, basic, or neutral solutions at 25◦c?

How would you present weight change if Earth had twice the mass that it does

What are written to the right of the arrow in a chemical reaction

If a catalyst is used in a reaction, a. the energy of activation increases. b. different reaction products are obtained. c. the reaction rate increases. d. the reaction rate does not change

Which of the following statements is true? A. Particles of a solid have a very orderly, three dimensional arrangement and do not move B. Particles of a liquid change shape and volume C.

How does hess's law use intermediate reactions to calculate the enthalpy of a desired reaction?

Which atomic particle dtermines the chemical behaviour of an atom?

If you could travel to the Sun and back, about how far would you travel? A. 1 AU B. 2 AU C. 5 AU D. 10 AU

A scientist is conducting a descriptive experiment where she is monitoring sea level along coastal towns in California. What is a major benefit of this experiment? The relationship shows cause and effect. It is repeatable.