Homework answers and tutorials

Waiting for answer If enough of a monoprotic acid is dissolved in water to prod...
##K_a = 5.3 * 10^(11)## The idea here is that you need to use the of the solution to determine the concentration of hydronium ions, ##"H"_3"O"^(+)##, that is required in order for...
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Waiting for answer What is the derivative of ##e^(lnx)##?
This is a classic problem in calculus, one that appears to require an exponential derivative but instead can be made incredibly easy using simple algebra and then differentiation. In Algebra II, we learn that because ##e^x## and ##lnx## are inverses, ##e^lna=a## (the e and natural log offset each o...
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Waiting for answer Why are sedimentary rocks the only rock type to contain foss...
Well, as you know there are three types of rock. There are , and . Let's think about all of them and why some can contain , but the other can't. But first of all what is a fossil? Fossils are organic products which are preserved in the Earth's crust. This means that the fossil is usually formed on...
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Waiting for answer Why is nuclear fission considered nonrenewable energy?
Nuclear fission is considered to be nonrenewable energy because it involves uranium, a nonrenewable resource, being mined and extracted from its ore. We will run out of it just as we will run out of coal, gas and oil. Uranium235, the primary fuel for nuclear power, has an abundance of 0.7% perc...
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Waiting for answer What is buoyancy?
Buoyancy is the upward force acting on an object. For example if you see cork floating on water. Now why does cork floats on water? It floats on water because the density of cork i...
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Waiting for answer How many stars have been observed in our solar system?
Sun is the only star in our solar system. Rest are planets, satellites, comets, asteroids, meteors etc. If you misunderstand mliky way for solar system the answer is 200 billion star...
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Waiting for answer What are two types of nitrogenous bases found in nucleic aci...
The two types are pyrimidines and purines. Pyrimidine bases are the basic forms of all 4 bases. Thymine and Cytosine and Uracil are built by just a pyrimidine ring, whereas guanine a...
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Waiting for answer Why can nerve impulses travel only in one direction?
Because of the chemical nature of impulse and the axondendrite structure. Because of the chemical nature of impulse and the axondendrite structure.http://www.biologymad.com/nervous...
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Waiting for answer How do I graph the quadratic equation ##y=(x5)^2## by plott...
you need first to try and find the value for both x and y hence initially you set ##y=0## then solve for ##x##. lets try to expand the equation first by opening the bracket. ##y=(x5)^2## ##Y=X^210X+25## SET ##Y=##0 SOLVE FOR ##X##. ##0=(X5)(X5)## ##X5=0## ##X=5## ANS. for the x intercep...
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Waiting for answer What is the difference between categorical (qualitative) dat...
Actually there are three main types of data. Qualitative or categorical data have no logical order, and can't be translated into a numerical value. Eye colour is an example, because 'brown' is not higher or lower than 'blue'. Quantitative or numerical data are numbers, and that way they 'impose'...
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Waiting for answer What is the chemical nomenclature for CH3Cl?
The chemical nomenclature for ##"CH"_3"Cl"## is chloromethane. Chloromethane, also known as methyl chloride or monochloromethane, is a colorless gas which melts at 97.4 °C, and boils at 23.8 °C. It is extremely flammable, and there are also concerns about the toxicity of the gas; for this reaso...
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Waiting for answer How do you find domain and range of a quadratic function?
For all quadratic functions, the domain is always ##RR## (double R). In interval notation, we write: ##(\infty,\infty)##. This means that any real number can be used as an input value. If the quadratic has a positive lead coefficient, like y = ##3x^2 4##, that 3 tells us that the parabola (gr...
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Waiting for answer How do you simplify square Root of 72 Minus Square Root of 1...
## = color(green)(3sqrt2## The square root of ##72## minus square root of ##18## can be expressed as ##sqrt72 sqrt18## Now, ##sqrt72 = sqrt(3^2 * 2^2 *2) = 6sqrt2## ##sqrt18 = sqr...
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Waiting for answer What is a triglyceride made of?
One glycerol molecule and 3 fatty acid molecules. Glycerol is a colorless, odorless and viscous liquid. It's IUPAC name is propan1,2,3triol. A fatty acid is a long chain of ca...
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Waiting for answer What is rotational motion?
Rotational motion is motion which follows a curved path. This is in stark contrast with linear motion, which follows straight paths. Linear motion is generally one's first introduction into the physics of motion. There are many parallels to be made between the two. Linear motion is primarily conce...
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Waiting for answer What are contractions that repel food down the gastrointesti...
it is known "peristalsis" some contraction followed by relaxation make food down
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Waiting for answer Which one is grammatically correct: Having a dinner or havin...
Having a dinner is grammatically correct.
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Waiting for answer The common unit of heat is the Btu, British thermal unit....
Pounds, degrees Fahrenheit. A British thermal unit , or Btu , is defined as the amount of heat needed to raise the temperature of ##"1 lb"## of water by ##1^@"F"##. This means tha...
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Waiting for answer What is 1 1/3 as a decimal?
##1 1/3 = 1.bar3 " or " 1.dot3## Often rounded to ##1.333## ##1/3## is a fraction that cannot be equally divided, so the number goes on and on, it recurs. ##1 1/3 = 1.333##. . . (...
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Waiting for answer What is the ionic bond formation of lithium chloride?
An ionic bond is found between a metal and a nonmetal, or a cation and anion. The metal (cation) always gives electrons away, and the nonmetal (anion) always gains electrons. So in the bond for lithium chloride, the lithium ion gives away one electron (giving it a 1+ oxidation number) and the ch...
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