Answer:
Time allowed for incubation, size of the dish, the amount of light, amount of agar, the type of agar…etc
Explanation:
Answer:
combustion of methane gass will take place when the flame is yellow
Low clouds
Stratus clouds are uniform grayish clouds that often cover the sky. Usually no precipitation falls from stratus clouds, but they may drizzle. When a thick fog “lifts,” the resulting clouds are low stratus. Nimbostratus clouds form a dark gray, “wet” looking cloudy layer associated with continuously falling rain or snow. They often produce light to moderate precipitation.
Middle clouds
Clouds with the prefix “alto” are middle-level clouds that have bases at 6,500 to 23,000 feet up. Altocumulus clouds are made of water droplets and appear as gray, puffy masses, sometimes rolled out in parallel waves or bands. These clouds on a warm, humid summer morning often mean thunderstorms by late afternoon. Altostratus clouds, gray or blue-gray, are made up of ice crystals and water droplets. They usually cover the sky. In thinner areas of them, the sun may be dimly visible as a round disk. Altostratus clouds often form ahead of storms that produce continuous precipitation.
High clouds
Cirrus clouds are thin, wispy clouds blown by high winds into long streamers. They are considered “high clouds,” forming at more than 20,000 feet. They usually move across the sky from west to east and generally mean fair to pleasant weather. Cirrostratus, thin, sheetlike clouds that often cover the sky, are so thin the sun and moon can be seen through them. Cirrocumulus clouds appear as small, rounded white puffs. Small ripples in the cirrocumulus sometimes resemble the scales of a fish, creating what is sometimes called a “mackerel sky.”
Vertical clouds
Cumulus clouds are puffy and can look like floating cotton. The base of each is often flat and may be only 330 feet above ground. The top has rounded towers. When the top resembles a cauliflower head, it is called “cumulus congestus.” These grow upward and if they continue to grow vertically can develop into a giant cumulonimbus, a thunderstorm cloud, with dark bases no more than 1,000 feet above ground and extending to more than 39,000 feet. Tremendous energy is released by condensation of water vapor in a cumulonimbus. Lightning, thunder and violent tornadoes are associated with them.
Answer:
what kind of math is this
Explanation:
Answer:
- <em>Number of protons, Z = 14</em>
- <em>Number of neutrons, N = 14</em>
Explanation:
<u>1) About isotopes:</u>
<em>Isotopes</em> are different kind of atoms of the same element. Hence, they have the atomic number (Z), which is the number of <em>protons</em>, the same number of electrons (talking about to neutral atoms, not ions), and different <em>number of neutrons N).</em>
This is, it is the number of neutrons what distinguish different isotopes of an element.
<u>2) About the notation used to distinguish different isotopes:</u>
A superscript and a subscript, both to the left of the chemical symbol of the element, are used to <em>distinguish different isotopes</em>:
A ←------------- This superscript tells the mass number of the isotope
X ←--------- This is the chemical symbol of the element
Z ←-------------- This subscript is the atomic number of isotope
In our case, the notiation for the isotope of silicon is: ²⁸₁₄ Si
So, we have:
- 28 is the mass number (A)
- 14 is the atomic number (Z)
- Si is the chemical symbol.
Now, you can answer the questions of the <em>part A</em>:
- Number of protons: Z = 14
mass number = number of protons + number of neutrons
A = Z + N
⇒ N = A - Z = 28 - 14 = 14
In <u>conclusion</u>:
- Number of protons, Z = 14
- Number of neutrons, N = 14
