In past scientist used stars and planets to determine time?

Solids, liquids, and gases can be distinguished by their

Which process would most effectively separate two liquids with different molecular polarities? (1) filtration (3) distillation (2) fermentation (4) conductivity

Give two reasons why a gold ring is not made of 100% gold.

Why is carbon added to iron to make nails?

Explain the steps to determine presence of pb2 + ions

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?