Answer:
5 g / ml
Explanation:
Convert the values given to g and ml
12.5 kg = 12500 g
2.5 L = 2500 ml
12500 g / 2500 ml = 5 g/ml
40'0'
X is smaller than |-40|
Answer: Yes! you're all good. Alkali metals in group 1 are the most metallic :)
