It's proteins, (i took the the test and got an A) good luck hope this helps!!!
Physical properties include: appearance, texture, color, boiling point, melting point, ect.
supports the structures of the face and forms a cavity for the brain and protects the brain from harm
I got you
The molecular formula for the combustion of butane in oxygen is:
2 C4H10 + 13 O2 ---> 8 CO2 + 10 H20
<span>You take the mass of carbon dioxide, 56.8g, divide by its molar mass, 44.01g/mol, to produce the moles of carbon dioxide. This is multiplied by the molar ratio of butane/CO2, (2/8) = 1/4, which gives the moles of butane required to produce the carbon dioxide. Multiply the number of moles of butane by its molar mass, 58.12g/mol, to produce the mass of butane. Mass of butane = 18.8g</span>
Magnesium :
<span>[Ne] 3s²</span>
Answer A
hope this helps!