5) How many grams of C6H6 are present in 12.70 moles of C6H6?

991.997

Explanation:

no of moles=given mass/molar mass ----1mass of benzene=78.11moles=12.7applying equation 112.7=mass/78.11mass of =991.997hope this helps you

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.