A certain element consists of two stable isotopes, one with mass 10.0129 with an abundance of 19.78%, and the second with mass 11.00931 and an abundance of 80.22%. What is the element

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

What must happen before a body cell can begin mitotic cell division

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3