The density formula is mass divided by the volume. The mass in this case is 19 grams and the volume 25 ml.
The density is 0,76 g/ml.
Oxygen is the 2nd most electronegative element. When you examine a periodic table, you will find that (excluding the noble gases) the electronegativity values tend to increase as you go to the right and up. The reverse statement is that the values tend to decrease going down and to the left.
Answer:
B. 26.00 g Fe
Atomic mass of Fe (Iron) is 55.845g
It is topsoil, subsoil, and parent material
