Awooden boat discovered just south of the great pyramid in egypt has a carbon-14> carbon-12 ratio that is 72.5% of that found in living organisms. how old is the boat

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils