Fe2O3 is the limiting reagent in this reaction. Fe2O3 2 Al --> Al2O3 2 Fe 29.1g Fe was produced and the yield of the reaction was 85.9% Find the original mass of Fe2O3 that must have been used?

2positives of biotechnology: 1. plants have become more resistant to viruses and other communicable pests.2. with the of biotechnology, we have been able to produce better tasting fruits as well as vegetables.2 negatives of biotechnology: 1. biotechnology poses a number of environmental threats. genetically modifies crops often infect monarch butterflies and other insect species.2. viruses could combine with crops.

The answer for this question is d. none of these

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts