Which impurity can bioaccumulate in aquatic systems?

a. mercury
b. sulfur
c. carbon dioxide
d. methane

Will mark brainliest 26. which of these statements are true? (3 points) a. gases are compressible b. gases fill their containers completely c. the pressure of a gas is independent of the temperature d. gases have mass e. gases exert pressure f. the pressure of a gas is dependent on the volume g. gas pressure results from the collisions between gas particles h. gases have a definite volume and shape

Which compounds have the empirical formula ch2o? a.c2h4o2 b.c3h6o3 c.ch2o2 d.c5h10o5 e.c6h12o6

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.