Answers created by random name 208

• Back to user's profile
• Gena is working on her math project. She has trimmed the sides of a square cardboard by 7 decimeters. The area of the cardboard then has decreased by 81 square decimeters. What was the original length of a side of the cardboard?
  
• How can there be 7 moles of reactants and just 5 moles of product?