Which impurity can bioaccumulate in aquatic systems?

A. Mercury

B. Sulfur

C. Carbon Dioxide

D. Methane

Dry chemical hand warmers utilize the oxidation of iron to form iron oxide according to the following reaction: 4Fe (s) + 3O2 (g) →2Fe2O3 (s) Standard thermodynamic quantities for selected substances at 25 ∘C Reactant or product ΔH∘f (kJ/mol) Fe (s)

The dissolving of a solid in a liquid occurs at the surface of the acid. True False

If 500.0 ml of 0.10 m ca2 + is mixed with 500.0 ml of 0.10 m so42-, what mass of calcium sulfate will precipitate? ksp for caso4 is 2.40*10-5. express your answer to three significant figures and include the appropriate units.

What is an evenly distributed, uniform mixture called? O A. A compound B. A homogeneous mixture C. An ionic solid O D. A heterogeneous mixture

What is the salt produced when sodium hydroxide (NaOH) reacts with sulfuric acid (H2SO4) ?

Consider the formation of glucose from carbon dioxide and water, that is the reaction of the photosynthesis process:

Is the animal farm poor true or false

Which list correctly shows carbohydrates in size from smallest to largest?

Metallic behavior is generally associated with elements with partially filled p orbitals. elements with unpaired electrons. elements with small atomic radii. elements with very negative electron affinities. elements with low ionization energies.

Does cos have a dipole moment? choose the answer that best explains the reason for your choice.