C + O2 - -> CO2 + 60kJ

is the reaction exothermic or

endothermic?

What's the difference between homogeneous and heterogeneous mixtures?

How do I balance this equation? Cr2O3 (s) + C (s) →Cr (s) + CO (g)

At what temperature is a neon a: 1) Solid 2) Liquid 3) Gas

An electrician cuts a 10-meter-long copper wire having a density of 8.9 g/cm3 into 10 equal parts. What is the density of each small part? One-tenth of 8.9 g/cm3 since density is an intensive property One-tenth of 8.

Where would you look for igneous rocks? Why?

What is it called when copper can be stretched into s thin wire?

What river basin provide river water to charolette and gastoia?

8. Calculate the molar mass of an alkane with the mole- cular formula C H18.

What is DNA? What information does it carry? Where is DNA located?

5. Differences in which property allow the separation of a sample of sand and seawater by filtration? A) concentration of ions B) volume of sample C) mass of sample D) particle size