30 Which radioisotopes have the same decay mode and have half-lives greater than 1 hour?

(1) Au-198 and N-16 (3) 1-131 and P-32

(2) Ca-37 and Fe-53 (4) Tc-99 and U-233

A pharmacy technician measures the mass of a pill. The mass of one pill is 300 mg . What is the mass in kilograms of 100 pills? Write your answer as a decimal.

What role in photosynthesis does chlorophyll play

The electric force between two charged objects is 0.24 newtons. If the distance between them is increased by a factor of 4, what will be the new force? A. 0.015 newtons B. 0.03 newtons C. 0.06 newtons D. 0.12 newtons E. 0.36 newtons

What might be some consequences of having fewer water resources per person?

322 l of hydrogen occupies volume of 197 l at stp. what was the initial pressure exerted on the hydrogen constant

A critical biotic factor in Yellowstone National Park is A) geographic isolation B) high elevation C) high temperature in the summer D) population of wolves E) proximity to water

If energy can neither be created nor destroyed in a chemical reaction, what can happen to the energy

Effect of ph on conformation of aplha helix

How can we tell when something is polar or non-polar in an Inter-molecular Force?

A reaction is most likely to occur when reactant particles collide with