Which of the following substances act as a catalyst in the body?
a)carbohydrates
b)nuclear acids
c)lipids
d)enzymes

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

Once similarity and one difference between a mixture of elements and a mixture of compounds