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  • Waiting for answer Given the right trapezoid calculate angle ##theta## and the...

    ##/_theta = arctan((sqrt(3)-1)/2)~~0.350879411 rad## ##S_(EAD) = 2## From right triangle ##Delta ABE##, knowing hypotenuse ##AE=4## and cathetus ##AB=2## we can find another cathetu...

  • Waiting for answer How do you convert 45°C to Fahrenheit?

    Recall the formula to convert this. ##\mathbf(T_C = 5/9(T_F - 32))## Of course, ##T_C## is the temperature in ##""^@ "C"##, and ##T_F## is the temperature in ##""^@ "F"##. Let's test this to make sure. I know that ##100^@ "C" = 212^@ "F"## is the boiling point of water, so let's see if that wor...

  • Waiting for answer How many moons does Saturn have? Which is the largest?

    62 known moons. Titan is the largest. There are 62 known satellites of the planet Saturn, the largest being Titan . Titan is the second largest moon in the solar system, surpassed...

  • Waiting for answer What is the difference between aryl and alkyl phenyl?

    I'm assuming you mean "alkyl phenyl" vs. "aryl", rather than "aryl phenyl" vs. "alkyl phenyl", because "aryl phenyl" seems redundant. I interpret "alkyl phenyl" as the one on the left here: An example of an alkyl phenyl you might see often in class is a benzyl group, like in benzyl bromide (brom...

  • Waiting for answer Two complementary angles have measures of ##2x+5°## and ##3...

    ##43^@" and " 47^@## Complementary angles are ##color(blue)"2 angles whose sum is 90 degrees"## Hence ##2x + 5## and ##3x - 10## , sum to ##90##. ##rArr2x+5+3x-10=90larr" equation...

  • Waiting for answer What is ionization; in relation to acids?

    Consider the ionization of hydrochloric acid: ##HCl(aq) + H_2O(l) rightleftharpoons H_3O^(+) + Cl^-## The charge separation that the acid undergoes upon protonolysis, i.e. its donat...

  • Waiting for answer What is the derivative of ##y=sec^2(2x)##?

    The function ##y = sec^2(2x)## can be rewritten as ##y = sec(2x)^2## or ##y = g(x)^2## which should clue us in as a good candidate for the power rule. The power rule: ##dy/dx = n* g(x)^(n-1) * d/dx(g(x))## where ##g(x) = sec(2x)## and ##n=2## in our example. Plugging these values into the power...

  • Waiting for answer A 50.0 mL sample of phosphoric acid, H3PO4, is titrated with...

    ##0.066"mol/l"## ##H_3PO_(4(aq))+3NaOH_((aq))rarrNa_3PO_(4(aq))+3H_2O_((l))## No. moles ##NaOH=cxxv=0.250xx0.0425=0.01## From the equation we can see that the no. moles of phosphor...

  • Waiting for answer In the sentence, "I'm cleaning my room," Cleaning is the ver...

    "I" because it is "I" that is cleaning. In this question, we have: "I'm cleaning my room" I'll now substitute in the parts of speech for each word: "Subject, Verb, Posessive Adjec...

  • Waiting for answer How do you calculate formal charge from an equation?

    The formal charge of any atom in a molecule can be calculated by the following equation: ##FC = V - N - B/2## where V is the number of of the neutral atom in isolation (in its ground state); N is the number of non- on this atom in the molecule; and B is the total number of electrons shared...

  • Waiting for answer In racemic mixture, why are both enantiomers of compound pre...

    Because that is what we mean by ##"racemate"##. By definition, a racemic mixture, a racemate, contains equal quantities of left handed and right handed . Stereoselective syntheses a...

  • Waiting for answer What is the leading theory on how the moon formed? Are there...

    The leading theory for the formation is the "Giant Impact Hypothesis", which posits a Mars-sized planet collided with the early Earth, throwing material into orbit which became the moon....

  • Waiting for answer Where does cellular respiration occur in the mitochondria?

    Cellular respiration occurs in the double-membrane organelle called the mitochondria. The folds in the inner membrane are called cristae. There are three processes in cellular respir...

  • Waiting for answer What is a radical of 136?

    See explanation... The first kind of radical you meet is a square root, written: ##sqrt(136)## This is the positive irrational number (##~~11.6619##) which when squared (i.e. mul...

  • Waiting for answer Is ethylamine a Bronsted-Lowry base?

    Yes, ethylamine, ##CH_3CH_2NH_2##, can act as a because of the lone pair of electrons present on the nitrogen atom. For example, when it reacts with water, ethylamine will accept a proton, ##H^(+)##, from water and form the ethylammonium ion. ##CH_3CH_2NH_(2(aq)) + H_2O_((l)) rightleftharpoons...

  • Waiting for answer What are the three main steps of facilitated diffusion?

    Molecule bonds to carrier protein The carrier protein changes shape shielding the molecule to the interior of the membrane The molecule is release to the other side of the membrane...

  • Waiting for answer What is a rain shadow?

    A rain shadow desert is the result of the rain shadow effect. This occurs when a mountain range lies between an area that has very wet air like a coast line and an area of very dry air like a desert. When the warm wet air moves from the ocean towards over the mountains it cools and the water in th...

  • Waiting for answer Why is only one hydrogen atom acidic in acetic acid, but all...

    That happens because of the structure of the two molecules, i.e. the atoms to which those acidic hydrogens are bonded to. Take acetic acid, for example. Its looks like this The acidic hydrogen in acetic acid is the one bonded to the pxygen atom. Because oxygen is a very atom, the bond is forms...

  • Waiting for answer How does seafloor spreading occur?

    At the Mid Oceanic Ridges the two lithospheric plates move away from each other resulting in the spreading of . The Sea Floor Spreading was put forth by Harry Hess . The hypothesis...

  • Waiting for answer Structurally, how does a polysaccharide differ from a polype...

    Polysaccharides are , long chains of monosaccharides, made of carbon, hydrogen, and oxygen, often in a 1:2:1 ratio. Polypeptides are , long chains of amino acids, made of carbon, hydrogen, oxygen, nitrogen, and a variety of other element, not in a particular ratio. Polysaccharides include starch a...

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