Question 2 15 pts
How much energy is required to change 75 grams of copper at 35 degrees Celsius
to liquid copper at 1200 degrees C?
(melting point = 1085 degrees C, boiling point = 2570 degrees C)
Round to a whole number (5 significant figures).
There is a temperature change AND a phase change. You will need to use both
formulas.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

i don't know people like to fight everywhere rip.

what is the question here. i think you messed up.