Rust is an iron oxide and formed by the reaction of iron and oxygen in the presence of moisture. So the answer would be C
Hey there!:
density = mass / volume
1.84 g/mL = 12 g / V
V = 12 / 1.84
V = 6.521 mL
hope this helps!
2NH₃(g) + CO₂(g) → CO(NH₂)₂(s) + H₂O(l)
is the balanced equation for the synthesis of urea.
I would say D, because you need to start with nothing to measure the different sizes as they start to grow. hope this helps!