What is the upper limit of z for an element to be a naturally occurring radioisotope

I think it's 88?

Which is a characteristic of a strong base? It turns pink phenolphthalein colorless. It turns blue litmus paper red. It releases H + ions into a solution. It removes H + ions from solution.

Which one of Newton's Laws fits this statement: More mass means more force needed to accelerate? Newton's First Law Newton's Second Law Newton's Third Law Answer

Give two examples of diffusion process in plants and animals.

Which best describes what occurs when an object takes in a wave as the wave hits it? transmission absorption reflection refraction

Nuclei of U-238 atoms are (1) stable and spontaneously absorb alpha particles (2) stable and spontaneously emit alpha particles (3) unstable and spontaneously absorb alpha particles (4) unstable and spontaneously emit alpha particles

Describe a way that people might be able to solve each envioronmental problem listed below. coal mining can harm habitats and cause pollution.

A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the volume of the gas at 100. degrees C?

Jack wants to know if it takes longer for warm water to freeze into ice cubes than cold water, so he performed the following experiment. Jack placed 50 mL of water in the refrigerator and allowed it to cool to a temperature of 4°C.

How to calculate average concentration

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.