Which of the following is a metal? *

sulfur

nitrogen

silicon

francium

How many liters of solution can be produced from 2.5 moles of solute if a 2.0 M solution is needed? 5.0 L 4.5 L 1.25 L 1.0 L

Identify the balanced single displacement reaction. CuCl2 + Fe ⟶ 2Cu + FeCI2 PbCl4 + 2Ca (OH) 2 ⟶ 2CaCl2 + Pb (OH) 4 CuCl2 + Fe ⟶ Cu + FeCI2 PbCl4 + 2Ca (OH) 2 ⟶ 2CaCl2 + 4Pb (OH)

Cobalt-60 is a radioactive isotope used to treat cancers of the brain and other tissues. A gamma ray emitted by an atom of this isotope has an energy of 0.700 MeV (million electron volts; 1 eV = 1.602 * 10-19 J).

How would sand get packed down in nature explain

A importância das plantas para os humanos

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?

7. How much energy in KJ is released when 15.0 g of steam at 100.0 degrees Celsius is condensed and then frozen to ice at 0.0 degrees Celsius?