2. A first-order reaction is 38. 5% complete in 480 s. A. Calculate the value of the rate constant. B. What is the value of the half-life. C. How long will it take for the reaction to reach 95% completion

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing