Some wastewater has a bod5 of 150 mg/l at 20 o c. nitrification was inhibited. the reaction rate k at that temperature has been determined to be 0.23 /day. (a) find the ultimate carbonaceous bod. (b) find the reaction rate coefficient at 15 o c. (c) find the bod5 at 15 o c.

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

Ashell can hold a maximum of 32 electrons, what is the value of n?

In the lab, a student fills a dry 50 ml graduated cylinder with 20 ml of water. the mass of the water in the graduated cylinder was 19.795 grams at 25°c. what is the true volume of the water measured in the graduated cylinder? the density of water at 25°c is 0.99707 g/ml.