What pH must organisms maintain

A 40.0 milligram sample of 33p decays to 10.0 milligrams in 50.0 days. What is the half life of 33p?

What are crystalline solids? A. Solids with heterogeneous organization B. Solids with a repeating atomic pattern O C. Solids with a random atomic structure D. Solids that break apart in jagged pieces

What is the mass of 4 moles of C2H6O?

What conversion factor will change moles CO2 to grams CO2? moles H2O to molecules H2O

Below are the steps of the engineering process (not necessarily in order) : 1) Know the background 2) Do the work 3) Make a plan 4) Identify a need 5) Evaluate and redesign 6) Test the results What is the correct order for these steps? APEX

Which examples demonstrate responses to stimuli? Check all that apply. A. A Venus flytrap closes on a fly. B. Large amounts of bacteria are present in a soil sample. C. A plant grows toward the sunlight. D. A rabbit has both white and black fur. E.

Aluminum carbonate (s) - aluminum oxide (s) - carbon dioxide (g)

Which physical state of matter has the most kinetic energy? A. plasma B. gas C. liquid D. solid

Dioxin, produced as a by-product of various industrial chemical processes, is suspected of contributing to the development of cancer and birth defects in animals and humans.

How do you find the - Atomic number Atomic Mass protons electrons neutrons group period of an element?