The use of lead paint in houses was banned in 1978 due to the health hazards associated with lead, specifically that high levels of lead exposure is dangerous to humans. Which branch of chemistry would study this?
O environmental chemistry
O agricultural chemistry
O biochemistry
O both environmental chemistry and biochemistry

The answer is nitrogen-containing bases

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).