Do You Know
Questions & Answers on General Knowledge.
What is pH and why is it so important to my garden pond and spa?
pH is a measure of the concentration of dissolved hydrogen ions in water. When a hydrogen atom loses an electron and becomes a hydrogen ion—a proton—it can dissolve nicely in water. Actually, this proton sticks itself to the oxygen atom of a water molecule, producing a hydronium ion (H3O+) that is then carried around by shells of water molecules. The higher the concentration of hydrogen (or hydronium) ions in water, the lower the water's pH. More specifically, pH is negative the log (base 10) of the molar hydrogen ion concentration. That means that water with a pH of 6 has ten times as many hydrogen ions per liter as water with a pH of 7. Pure water naturally contains some hydrogen ions, formed by water molecules that have spontaneously dissociated into hydrogen ions (H+) and hydroxide ions (OH-). Pure water has enough of these hydrogen ions in it to give it a pH of 7. But if you dissolve acidic materials in the water, materials that tend to produce hydrogen ions, the pH of the water will drop. If you dissolve basic materials in the water, materials that tend to bind with hydrogen ions and reduce their concentration, the pH of the water will rise. Water with too many or too few hydrogen ions tends to be chemically aggressive and we do best in water that has a pH near 7.
For how many years can the male reproductive system produce sperm?
Has a robot been invented to help with housework?
What is the life cycle of a mosquito?
How does a surface know how hard it must push upward on an object to support that object?
Will light going in two directions in the same space create destructive interference?
At what temperature does paper burn?
Does the air pressure of a basketball and the hardness of the floor surface have an effect on the height of the bounce?
Why do crocodilians have eyes on top of their heads?
When an electron hits a neon atom, does it transfer its energy to the atom and lose its own forever?
Can the electric current be taken out of the metal where the charge will not carry?
Why doesn't glass have electrons to carry heat. What is glass made of?
How can an insulator carry a charge if it cannot conduct electricity? How can one charge an insulator? Can an insulator be charged by induction?
During the American War of Independence, which country contributed the most soldiers to fight alongside the British?
Why do social insects have such large families?
Why does the Sun look like a red disc during sunrise and sunset?
How many rings do Jupiter and Uranus have?
Why are dung beetles so called?
What are sungrazers?
When was the first post office in the United States established and how did the system grow?
Why do funeral processions move so slowly?
Is there any equipment that can track people in a large, dense forest?
Can I eat an insect?
Why do the earth's oceans appear blue to an observer on the moon?
What is bonsai?
What is a citizen?
What to Eat in Manipur
Tallest Dams In The World
Mountains in India
Rules to play Caber Toss
Benefits of Victoria Plum
The Victoria plum are known to be an effectivenatural laxative. This can be either good or bad