Calculate the concentration of sodium ions made by diluting 45.0 mL of a 0.748 M solution of sodium sulfide to a total volume of 250.0 mL

How does the amount of freshwater on Earth compare to the amount of saltwater on Earth?

What earth sphere extends from earth's core to earth surface?

Methane and sulfur react to produce carbon disulfide (CS2), a liquid often used in the production of cellophane. CH4 (g) + S8 (s) CS2 (l) + H2S (g) (a) Balance the equation. (Use the lowest possible coefficients.

Putting a straw in a glass of water can often make the straw look broken, even though it is in perfect condition. Which of the following best explains why this happens? A. The light creates heat in the water causing the straw to look different. B.

Which of these groups of elements show the least electronegativity? inner-transition elements A. halogens B. alkali metals C. transition elements D. alkaline earth metals

How many minutes are in 33.6 days

Select the equations that are correctly balanced. a. H2O + 2O2 → H2O2 b. Fe2O3 + 3H2 → 2Fe + 3H2O c. Al + 3Br2 → AlBr3 d. CaCO3 → CaO + CO2

Identify the reactants and products of 3ba (c2h2o2) 2 (aq) + 2na3po4 (aq) = ba3 (po4) 2 (s) + 6nac2h2o2 (aq)

How many moles of copper are needed to react with sulfur to produce 0.25 moles of copper sulfide

How is friction a good thing and a bad thing?