d = √((x1 - x2)2 + (y1 - y2)2)
( -2 , 5 ) ( 12 , -1 )
↑ ↑ ↑ ↑
x1 y1 x2 y2
d = √((-2 - 12)2 + (5 - (-1))2) = √((-14)2 + 62) = √(196 + 36) = √232 = 2√58 ≈ 15.23
The heat of fusion for water is the amount of energy needed for water to :
c.melt
I am very sure that the answer is C. Hope it’s right :)
Answer:
Bromine
Explanation:
They are in the same collumn and elements share the most properties with those in their family
If we look at the periodic table, we see that phosphorous has an atomic mass of 30.97. Therefore, it has a molar mass of 30.97 g/mol. The answer is B.