Homework answers and tutorials

Waiting for answer How would you define a bond?
##"The modern covalent bond is conceived to be a........"## The modern covalent bond is conceived to be a region of high electron between 2 positively charged nuclei, such that inte...
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Waiting for answer What is a proper adjective?
Proper adjectives are words in their proper form (starts with a capital letter) that describe . Proper adjectives are just like proper . They start with a capitalized letter. Look...
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Waiting for answer How do you calculate ionization energy using Rydberg constan...
##13.6eV## for first ionisation energy of hydrogen. The Rydberg equation for absorption is ##1/lambda = R(1/n_i^2  1/n_f^2)## Where ##lambda## is the wavelength of the absorbed ph...
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Waiting for answer Can the average fixed cost ever be zero?
No. In economics, average fixed cost (AFC) is the fixed costs of production (FC) divided by the quantity (Q) of output produced. Fixed costs are those costs that must be incurred in...
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Waiting for answer How do you find the square root 289?
17 ##sqrt(289)## put square root then put 289 and the answer is 17
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Waiting for answer How do quasars differ from stars?
You can find information on quasars on http://www.space.com/17262quasardefinition.html Which is the site I used to answer your question. In short: A quasar looks like a star when...
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Waiting for answer How does natural selection drive evolution?
Over time, genes spontaneously mutate or change, causing changes in individual organisms. If those changes allow the organism to bear more offspring than others of its' species these then will be passed on. The environment will be what selects these changes. If the environment is benign then very...
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Waiting for answer What is the square root of 20 times the square root of 5?
10. The rule for multiplying square roots is that ##sqrta*sqrtb=sqrt(ab)## It's important to clarify that because it can be confusing if you don't understand that radical multiplicat...
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Waiting for answer What is static equilibrium in chemistry?
Static equilibrium is a type of equilibrium in which the rates of the forward and reverse processes are zero. We are all familiar with , in which the rates of opposing processes are...
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Waiting for answer How do you simplify Square root of 24 + Square root of 54?
##5sqrt(6)## ##sqrt(24) + sqrt(54)## First, factorise both surds: ##sqrt(4 * 6)## + ##sqrt(9 * 6)## Square root any factors that are square numbers and put them in front of th...
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Waiting for answer What is the algebraic expression for N cubed increased by 5?
It is ##n^3 + 5## The hard part of this is translating the English words into algebraic expressions. "n" is a variable. So we start with that: ##n## "cubed" means raising to the po...
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Waiting for answer What is the role of calcium ion in blood clotting?
My answer will only focus on the specific role of calcium ions in clotting. It will not go into the details of the entire clotting cascade. Remember the gamma carboxylated clotting factors contain two carboxyl residues. These carboxyl residues are negatively charged, with each of those carrying a...
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Waiting for answer What are the steps to the Boyle's Law formula "P1 x V1 = P2...
Boyle's law developed by Robert Boyle in 1662, states that if we keep the temperature of a gas constant in a sealed container. Its pressure (P) varies inversely with its volume (V). In other words at any given temperature. If we pressurize a gas its volume will be reduced proportionately to the pres...
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Waiting for answer What is the difference between species diversity and species...
Species diversity is a measurement of species richness and species evenness. Species richness is the number of species. Species richness is the number of species found in a community...
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Waiting for answer What does redundant mean? Can a person be redundant?
Something that can be removed without being missed. They could, but it would be REALLY mean. Basically, the word "redundant" can have many meanings. However, it seems to all correlat...
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Waiting for answer How big is the moon compared to the Earth?
The moon measures 3476 kilometers in diameter, or about onefourth ##(1/4)## the diameter of the earth.
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Waiting for answer What is the ionic compound for FePO4?
The name is iron(III) phosphate. Check this out so you can name it yourself: OK.
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Waiting for answer What is the function of the pituitary gland?
The pituitary gland, generally said "glands", is a twingland that is important in key functions of the body, e.g. metabolism. The pituitary gland (s) is an endocrine gland (i.e. it...
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