Answer:
The biodiversity of an area is literally the number of species, both plant and animal, inhabiting the environment being examined. When a species is no longer found in a region, it is locally extinct.
Explanation:
The compound formed is the quaternary ammonium salt N,N,N-trimethyl-1-phenylmethanaminium iodide.
Quaternary ammonium salts are formed when methyl iodide reacts with an amine. The quaternary ammonium salt is an ionic substance which often has a high melting point. Remember that the melting point of a substance can be used to identify the substance.
In this case, a student reacted 40 drops of an unknown amine with 20 drops of iodomethane in 2 ml of a suitable solvent mixture. after 15 minutes of reaction, a white precipitate formed. the precipitate was isolated and its melting point was recorded to be 178 °c. This precipitate must be N,N,N-trimethyl-1-phenylmethanaminium iodide (Benzyltrimethylammonium iodide) because it is a quaternary ammonium salt whose melting point is 178 °c.
Learn more: brainly.com/question/5325004
The three patters are clumped, random, and uniform
Question: Given the balanced equation representing a reaction:
2H2 + O2 ==>2H2O
What is the total mass of water formed when 8 grams of hydrogen reacts completely with 64 grams of oxygen?
(1) 18 g (3) 56 g
(2) 36 g (4) 72 g
Answer:
"72 gram" is the total mass of water formed when 8 grams of hydrogen reacts completely with 64 grams of oxygen
Explanation:
We will do stoichiometry in this kind of problem:
![8g of H_2O\times(\frac{1molO_2}{2.0g H_2})(\frac{2 mol H_2O}{2mol H_2})(\frac{18g H_2O}{1molH_2O}) = 72g H_2O](https://tex.z-dn.net/?f=8g%20of%20H_2O%5Ctimes%28%5Cfrac%7B1molO_2%7D%7B2.0g%20H_2%7D%29%28%5Cfrac%7B2%20mol%20H_2O%7D%7B2mol%20H_2%7D%29%28%5Cfrac%7B18g%20H_2O%7D%7B1molH_2O%7D%29%20%3D%2072g%20H_2O)
![64 g O_2 \times (\frac{1molO_2}{32g O_2})(\frac{2 mol H_2O}{1mol O_2})(\frac{16gH_2O}{1 mol H_2O}) = 72g H_2O](https://tex.z-dn.net/?f=64%20g%20O_2%20%5Ctimes%20%28%5Cfrac%7B1molO_2%7D%7B32g%20O_2%7D%29%28%5Cfrac%7B2%20mol%20H_2O%7D%7B1mol%20O_2%7D%29%28%5Cfrac%7B16gH_2O%7D%7B1%20mol%20H_2O%7D%29%20%3D%2072g%20H_2O)
Therefore, the total mass of water formed is 72 g.
Gas is the correct answer state mass unknown