Which of the following represents a chemical change when using bread in a meal? F. Removing the crust of the bread when making a sandwich.

G. Placing the bread in a toaster to make toast and applying butter on it afterwards

H. Cutting the bread in half to make two sandwiches

J. Placing mayonnaise, ketchup, and mustard on the bread before the meat

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

The air in an automobile tire with a volume of 2.60 ft3 is at 70°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ft⋅lbflbm⋅r(1 psia144 lbf/ft2) = 0.3704 psia⋅ft3lbm⋅r the amount of air that must be added to raise the pressure is lbm