Mercury has a density of 13.5 g/mL. The density of concrete is 2.3 g/mL. What would happen if you dropped a block of concrete into a pool of mercury?

A solution is prepared by dissolving ammonium sulfate in enough water to make of stock solution. A sample of this stock solution is added to of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.

Write the equation for the fusion of two hydrogen-1 atoms.

For the complete redox reactions given here write the half-reactions and identify

When cream mixes with coffee, is this a chemical or physical change?

The radioisotope cesium-137 has a half-life of 30 years. a sample decayed at the rate of 544 counts per minute in the year 1985. in what year will the decay rate be 17 counts per minute?

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.0 L of water upon warming from 25 ∘C to 50 ∘C.

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure.

When you light a fire place what energy transformation takes place

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB

Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?