72 grams of carbon combines with 6 grams of Hydrogen to form a compound. write its empirical formula.

The pressure in a fluid is affected by which characteristics of that fluid

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space