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How can I make a phosphorous atom model?

Phosphorous has 15 protons, 15 electrons and 16 neutrons, so balls are needed in three different colors to represent these elements. Suitable materials include ping pong balls, foam balls or other round parts. The balls representing the protons and neutrons should be glued together to form a single nucleus that will sit at the center of the atom. Glue two balls representing electrons on the innermost ring, eight balls on the next ring and then five on the right side of the outermost ring.\n\nUse any type of glue or a hot glue gun to glue the parts together and then take care to glue the entire..

Why do seeds need to be dispersed?

If a parent plant, which may produce tens of thousands of seeds each year, simply dropped its seeds directly below it, the resulting seedlings would have very little chance for survival. In addition to blocking most of the sunlight, parent plants have extensive and established root systems that would work to prevent the seedlings from obtaining enough water and nutrients from the soil. If too many of the seedlings establish themselves directly under the parent plant, the parent may also suffer from being unable to obtain enough water.\nWhen homeowners or gardeners plant seeds, they must be car..

What are the products of HNO3 + Ba(OH)2?

The reactants HNO3 and BA(OH)2 stand for nitric acid and barium hydroxide, respectively. The products of their reaction are water, represented as H2O, and the compound barium nitrate. The balanced reaction uses stoichiometric coefficients, which are the numbers preceding each chemical formula, to ensure that the same amount of matter is found both before and after the reaction. Accordingly, both sides of the equation contain four atoms of hydrogen, two atoms of nitrogen, one atom of barium and eight atoms of oxygen.

What does a tapir eat?

Tapirs are herbivores that primarily live in forests and grasslands. They are mostly nocturnal, and they search for food using their trunks. However, some tapirs are more active during the day than others, such as the Andes mountain tapir. Tapirs are also flexible enough to grab food that is seemingly out of reach. They feed each morning and evening, at which point they traverse through worn paths walked by other tapirs. Tapirs follow these trails to find water spots and other feeding areas.\nTapirs also use their noses to search for fallen fruit, and they use their trunks to strip leaves from..

What are some examples of blue things?

Blue crabs have blue pinchers, and humans value them highly for their succulent, sweet meat. They grow along the eastern coast of North and South America from Nova Scotia to Uruguay. Their shells are brown, and the female blue crab has red accents on its claws. Blue crabs eat practically anything that gets in the reach of their large pinchers, including fish, mussels, snails, carrion and smaller blue crabs. The shells of male blue crabs grow to 9 inches in width.\nHumans perceive the sky as blue due to the scattering of sunlight. Light travels in waves, and the molecules of air in the atmosphe..

How do you separate mixtures?

Identify the nature of the mixtureIdentify the nature of the substances in the mixture you wish to separate. If your mixture contains insoluble particles such as dirt in a liquid such as water, filtration must be used to separate the two.Gather the equipmentFor filtration, you need a container with a hole in the bottom, filtration material such as charcoal, gravel or sand and a larger container to catch the liquid that remains from the filtration process.Line the container with filtration materialLayer the bottom of the container with a hole with your filtration material of choice. Charcoal, s..

What is an angle formed by opposite rays called?

The straight angle is the only type of angle formed by two opposite rays. All other angles formed by two rays are less than 180 degrees. Acute angles are between zero and 90 degrees. A right angle, with one ray perpendicular to another, is 90 degrees. Obtuse angles are between 90 and 180 degrees.

What does Freon gas smell like?

Freon is the trade name for a number of different gases with similar chemical formulas and characteristics. They are registered by the Du Pont chemical company and sold as refrigerants. Freon 22 and Freon 23 are the sole remaining chemicals under the Freon name that are still on the market, but Freon 22 is being phased out because of its environmental effects. Both gases have similar, ether-like odors.

How does Benedict's solution detect sugars?

The test only reacts with reducing sugars such as fructose and glucose, but is unable to react with sucrose found in table sugar. It is used in the food industry to test for sugars as well as test for glucose in the urine of suspected diabetes suffers. The solution is blue at first, which indicates no sugars. Once it reacts with a reducing sugar, the color will change to green, yellow, orange, red or brown, with brown indicating a high level of sugars.

What is a simple replication transcription translation?

Lacking a nuclear membrane results in certain advantages for bacteria in comparison to eukaryotes. Gene expression is inherently faster, and bacteria can dispense with RNA processing. Messenger RNA can be translated into protein even as downstream regions of a particular gene are still being transcribed.\nDNA replication in prokaryotes is also simpler than in eukaryotes. Prokaryotic genomes are far smaller than their eukaryotic counterparts. Also, bacterial chromosomes tend to be circular rather than linear. Starting at a single origin of replication, a bacterium like E. coli replicates its DN..

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