In a heat engine, if 500 J of heat enters the system, and the piston does 300 J of work, what is the final internal (thermal) energy of the system if the initial energy is 1,500 J?

800 J

1,300 J

200 J

1,700 J

During the combustion of 5.000 g of octane, C8H18, 239.5 kcal is released. Write a balanced equation for the combustion reaction. Express your answer as a chemical equation with whole number coefficients. Include phases.

The three common states of matter are solid, liquid, and gas. how are they the same? how are they different?

What charge would be formed by lithium? A) - 1 B) - 3 C) + 1 D) + 3

What particles did Rutherford discover

When liquid is poured through a filter

Is Ba (NO3) 2 covalent or ionic

An alcohol contains only C, H, and O. When a 1.50mg sample of the alcohol is burned completely in oxygen, 3.30mg of CO2 and 1.80mg of H20 are formed. What is the empirical formula for the alcohol?

Using the field meter, does the field strength increase or decrease as you move away from the bar magnet?

Complete each of the definitions with the appropriate phrase. Precision means that measurements are close to Accuracy means that measurements are close to Anawer Bank each other an accepted value |individual several

Acetylene is hydrogenated to form ethane. the feed to the reactor contains 1.4 mol h2/mol c2h2. (find properties of the reactants/products in appendix of book) a.