Sometimes models are not draw to scale (the exact right size). In the image po above all eras are the same size... but should they be? Which of the
following eras lasted approximately 290 million years
Paleozoic
Mesozoic
Cenozoia
Cambrian

Where are chemicals found at work? a. only in cleaning products b. only in carpets and paint c. in every area of work d. only in food preparation submit

For which one of the following reactions is the value of δh° rxn equal to δh° f for the product? a. 2 h2 (g) + o2 (g) → 2 h2o (l) b. n2 (g) + o2 (g) → 2 no (g) c. 2 h2 (g) + o2 (g) → 2 h2o (g) d. h2o (l) + 1/2 o2 (g) → h2o2 (l) e. none of the above

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide.