Glass is a notorious source of metal ion contamination. three glass bottles were crushed and sieved to collect 1 mm pieces. to see how much al3+ could be extracted, 222 ml of a 0.05 m solution of the metal-binding compound edta was stirred with 0.50 g of the 1 mm glass particles in a polyethylene flask. the al content of the solution after 2 months was 5.2 μm. the total al content of the glass, measured after completely dissolving some glass in 48 wt% hf with microwave heating, was 0.80 wt%. what fraction of the al was extracted from the glass by edta? (enter your answer to 5 decimal places.)

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

if i am correct, your answer choices are:

a. the temperature remains constant

b. the temperature increases at a constant rate

c. heat flows at a constant rate into the system

d. heat flows at a constant rate out of the system

e. no heat flows into or out of the system

if so, then the answer is e. no heat flows into or out of the system.