C3h8 + 5o2 -> 3co2 + 4h2o
according to this equation, which ratio of oxygen to propane is correct?

1- 5 grams o2 / 1 gram c3h8
2- 5 moles o2 / 1 mole c3h8
3- 10 grams o2 / 11 grams c3h8
4- 10 moles o2 / 11 moles c3h8

In the reading, yao chen-yuan describes traveling to deliver a message. why was he willing to risk danger to travelto tientsin? he wanted to the boxers with their cause

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?