Answer:
Explanation:
See picture for explanation
C5H4
The subscripts in the molecular formula must equal n times the subscripts in the empirical formula (where n is an integer). Both 10 and 8 are divisible by 2, so the empirical formula is C5H4.
Turning Sugar into Caramel
You turn sugar into caramel by burning sugar. Burning sugar is a chemical change.
92 cm^3
Sodium acetate is NaC2H3O2
Answer: its D
H=mc∆T
H=15×4.18×20
H=1254J
