Vol.250 before its to much pressure
A-14
Explanation:
Mass number (MN) = Proton number + Neutron number
MN=7+7
MN=14
The right answer for the question that is being asked and shown above is that: "C) carbon monoxide and carbon dioxide" hydrocarbons burn completely in an excess of oxygen, the products are <span>C) carbon monoxide and carbon dioxide</span>
CaSO4 - to find the molar mass, you add the element's mass number.
40.08 + 32.06 + (16x4)
= 136.14
The first step of the scientific method would be Observations.