Answer:
produced from magma
Explanation:
it is formed when the rock cools from being magma or lava
Divide 1.25/3.93 and then multiply by 100 to get the percent. This equals 31.81%
That would be correct as stated.
Answer:
20.0/1 x 1mole/58.44=0.34
(Atomic mass of salt)
Been a minute since I've done this, but this is how I remember doing it, soo..hope this helps!