The combustion of pentane, c5h12, occurs via the reaction
c5h12(g)+8o2(g)_5co2(g)+6h2o(g)
with heat of formation values given by the following table:
substance _h_f
(kj/mol)
c5h12(g) _35.1
co2(g) _393.5
h2o(g) _241.8

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.

In salt water solution,the salt is the blank

What type of matter is made of only one kind of atom