Which of the following is not a physical change? A. glass breaking
B. iron rusting
C. ice melting
D. sugar dissolving

0.66y = 0.9x + 0.48 if y has a value of 108.45 what is the value of x?

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound

Apound is approximately 0.45 kilogram. a persons weighs 87 kilograms. what is the persons’s weight, in pounds, when expressed to the correct number of significant figures