Which is the correct chemical equation for the following statement? “Sodium reacts with oxygen in a 2 to 1 ratio to produce sodium oxide.”

4Na + 2O2 → 2Na2O + O2

Na2O → 2 Na + O2

Na2 + O2 → 2 NaO

Na2O + O2 → 2 Na

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.

What is the gold assay