If you started with 1.4 mol of oxygen in the following balanced equation, how many molecules of oxygen gas would this be? 4 Fe + 3 O2 --> 2 Fe2O3

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.