Propane burns completely in oxygen as shown. C3H3(g) + 502(g) --> 3C02(g) + 4H2O(l)
100 cm^3 of propane was mixed with 600 cm^3 of oxygen and the mixture was ignited.
What is the total volume, in cm^3, of the gas mixture at the end of the reaction?
All gas volumes were measured at room temperature and pressure.
A 300
B 400
C 700
D 800

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid