According to this graph, which statement describes how the amount of iron changes over time in the reaction
fe2o3 + 3h2 → 2fe + 3h2o?
a.
the amount of the product fe increases rapidly at first and then continues to increase slowly.
b.
as time passes there is steady decrease in the amount of fe.
c.
as time passes fe2o3 and fe will reach a dynamic equilibrium.
d.
the amount of the reactant fe2o3 increases rapidly at first and then continues to increase slowly.

Which statement about covalent bonds is true

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?