What type of decay does Am-241 undergo to become Np-237? a. Alpha decay

c. Positron emission

b. Beta decay

d. Electron capture

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as