The answer is 27.92g . working is shown in the picture above.
Its C
a catalyst speeds up a reaction by offering the reaction an alternative reaction pathway with a lower activation energy
hope that helps
Is there an attachment because it depends on the element.
Answer: Farmers were paid to practice soil-conserving techniques like crop rotation and terracing
Explanation:
read about it here: https://www.pbs.org/wgbh/americanexperience/features/dust-bowl-surviving-dust-bowl/