Sb2S3(s) + 3 Fe(s) -> 2 Sb(s) + 3 FeS(s) How many moles of Sb2S3 are needed to react with an excess amount of iron to produce 9.40 moles of antimony? 

Which change to the system wood cause the freely-moving piston to lower?

During an experiment, ice and water were placed in a perfectly insulated thermos flask at 0 °c. describe this system when it phase reaches equilibrium.

Which of the following statements is true about both nuclear fusion and nuclear fission? they occur in the sun. heavy atoms are split. two light nuclei combine. some mass changes into energy.