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:
Therefore, the total mass of water formed is 72 g.
I would say that it sounds like you are an alchemist as during the 1500's at least they tried to turn base metals like Pb or lead into Au or gold. While this is not possible, their experiments gave rise to the science and techniques of metallurgy and assaying as confirmed by the great first mine geologist, Georgius Agricola in the 1500's,
Answer:
A detergent consists of an ionic head and a hydrophobic tail.
Explanation:
Cleaning involves the use of a detergent and water. Every detergent possesses a hydrophillic head which is capable of interacting effectively with water thereby helping the detergent to dissolve in water.
It also has a hydrophobic tail, projecting above the water surface, which dissolves the grease. An aggregation of these heads and tails forms large microscopic detergent particles called miscelles. The miscelle is responsible for the cleansing action of the detergent.