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  • Waiting for answer Why isn't a frog a reptile?

    A Frog is an amphibian and amphibians and reptiles belong to different classes for a number of physiologic and developmental reasons. AMPHIBIANS: Cold-blooded Smooth scale-less sk...

  • Waiting for answer Is the word "impact" a countable or uncountable noun?

    The word 'impact' is countable as well as uncountable. Some are countable as well as uncountable depending on their use. One of the example of this kind of nouns is 'impact'. 1) W...

  • Waiting for answer Why is the melting point of Argon so much lower than any of...

    The melting point of argon is much lower than those of period 3 because, being a noble gas, it exists as atoms, rather than molecules, which directly impacts the strength of its . Melting point temperatures are determined by the strength of the and by the characteristics of the structure of the...

  • Waiting for answer A cell that consists of an Ni, NiSO4(aq) half-cell, an Al, A...

    ##(a)## ##2Al_((s))+3Ni_((aq))^(2+)rarr2Al_((aq))^(3+)+3Ni_((s))## ##(b)## ##E_(cell)=+1.38"V"## ##(a)## Arrange the 1/2 cells in order most -ve to most +ve: ##stackrel(color(wh...

  • Waiting for answer How many right angles are in an octagon?

    Typically, ##0## A regular octagon has ##0## right angles—all its vertices are ##135˚##. The angle measurement can be found through the formula ##(180˚(n-2))/n##, where ##n## is th...

  • Waiting for answer How do scientist know how many planets are in the universe?

    There are innumerable galaxies and galaxies consists of innumerable solar systems. So it is logical that there are millions of planets in the universe.

  • Waiting for answer How many constitutional isomers does C3H8O have?

    3 isomers ##C_3H_8O## has three constitutional isomers: 1-propanol: ##CH_3-CH_2-CH_2-OH## 2-propanol: ##CH_3-CH(OH)-CH_3## ethyl-methyl ether: ##CH_3-CH_2-O-CH_3##...

  • Waiting for answer What are sex-linked genes?

    Genes carried by sex chromosomes. There are two different sex chromosomes X and Y . Men usually have a combination of a X and a Y chromosome, whereas women usually have two X chromo...

  • Waiting for answer How would you balance the following equation: aluminum iodid...

    Aluminum has a common oxidation state of ##"3+"##, and that of iodine is ##"1-"##. So, three iodides can bond with one aluminum. You get ##"AlI"_3##. For similar reasons, aluminum chloride is ##"AlCl"_3##. Chlorine and iodine both exist naturally (in their elemental states) as diatomic , so they a...

  • Waiting for answer Is it possible to rearrange PV=nRT into the form y=mx+b?

    Yes, it just depends on which term you want to be y and which you want to be x. If you hold two of the four variables (P, V, n, or T) of the ideal gas equation constant, they can be lumped in with R. For example, if you are looking at the relationship between volume and temperature under constant...

  • Waiting for answer How can I find chiral centers in ring structures?

    Here's one way to do it. Assume that you have to find the chiral centres in 3-aminocyclohexanol. Here are the steps to find the chiral centres. Step 1 : Ignore all atoms that c...

  • Waiting for answer What is latitude?

    Latitude is the distance North or South of the Equator. Latitude is measured in degrees. In the picture below, you can see how the angle measures are derived -- the poles are perpendicular to the equator (0 degrees) and thus the latitude at the poles is 90 degrees. Latitudinal lines are paralle...

  • Waiting for answer What was the Nullification Crisis?

    It was an effort by South Carolina to nullify or void a law passed by the Federal Government. The South hated the tariff, which was a tax on imports. By 1832, the Industrial Revoluti...

  • Waiting for answer What are adjacent angles?

    Two angles that share a vertex and one side are adjacent. Here is an example of adjacent angles:

  • Waiting for answer What is the difference between a polypeptide and a protein?

    Technically, a polypeptide is a string of covalently bonded amino acids which are not folded into any specific structure - whereas a protein is a string of covalently bonded amino acids that has folded into its correct shape.

  • Waiting for answer Let R be the region in the first quadrant bounded by the gra...

    ##int_0^2sqrt(1+e^-x)dx ~~ A_T=2.391## Given ##n=4## trapezoids to use, you can measure the width of each trapezoid needed to estimate the area. Divide the difference of your bounds...

  • Waiting for answer How many white dwarf stars are there in the Milky Way Galaxy...

    No one knows. It is nearly impossible for astronomers to see all the stars in the Milky Way Galaxy simply because we are a part of it. This picture is a best guess of what the Mi...

  • Waiting for answer An arrow is shot at a 30 degree angle with a velocity of 39m...

    (a) ##19.4"m"## (b) ##134.4"m"## (a) Considering the vertical component ot the motion: ##v^2=u^2+2as## This becomes: ##v^2=u^2-2gh## ##:.0=(39sin30)^2-2xx9.8xxh## ##:.0=380-...

  • Waiting for answer How does the function of mrna differ from dna?

    DNA for one does not leave the nucleus. mRNA on the other hand is free in the cytoplasm. DNA functions as the main code for the behaviour of the cell and for the production of all its . While it does not leave the nucleus, mRNA which is free can line up alongside DNA in the nucleus and recreate sec...

  • Waiting for answer How do I us the Limit definition of derivative on ##f(x)=e^...

    The limit definition of the derivative is: ##d/dx f(x) = lim_(h- 0) (f(x+h) - f(x))/h## Now, since our function ##f(x) = e^x##, we will substitute: ##d/dx[e^x] = lim_(h- 0) (e^(x+h) - e^x)/h## At first, it may be unclear as to how we will evaluate this limit. We will first rewrite it a bit,...

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