scandium. if you look up the number of electrons thats the periodic number and it gives you the answer
Answer:
D. 18.7 grams
Explanation:
The coefficients are the key.
Create a proportion with them, and the molar mass, and then solve for x:

a) cross out 11mL from list 1, 2 mL from list 2, and 998 cm3 from list 3.
b) circle 200 mL from list 1, 801 mL from list 2, and 1 L from list 3.
The answer is Vestigal. It is a type of anatomical structure that no longer serves any function. Over time they are no longer needed in the body. Apart from the wisdom tooth, another example would be the tail bone which has no use for humans.