How much heat is necessary to melt 56.72 grams of substance y from solid phase at 15 degrees celsius to liquid at the same temperature? melting point of substance y = 15 degrees celsius; δhvaporization = 2.83 j/mol; δhfusion = 5.51 j/mol; mwsubstance y = 14.77 g/mol.

i think the correct option is the second option.

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation:

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of