Homework answers and tutorials

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  • Waiting for answer How many cups are in 20 quarts?

    ##80 " cups" = 20 " quarts"## Handy relations to memorize: ##8 " ounces" = 1 " cup"## ##2 " cups" = 1 " pint"## ##2 " pints" = 1 " quart"## ##4 " quarts" = 1 " gallon"## If you r...

  • Waiting for answer the spectroscopic notation (also called spdf notation) elec...

    Ni is number ##28## on (Atomic number is ## 28##) spdf ##Ni : ## ##1s^2## ##2s^2## ##2p^6## ##3s^2## ##3p^6## ##3d^8## ##4s^2## To check the total of all powers: ##2+2+6+2+6+8+2 = 28## The power of the subshell(s, p, d, f) gives the number of electrons on each subshell. maximum values for s...

  • Waiting for answer Why doesn't helium have a third ionization energy?

    Simply put, because it does not have three electrons. is a measure of how much energy is needed to remove 1 mole of electrons from 1 mole of atoms in the gaseous state. Simply pu...

  • Waiting for answer What is uniformitarianism?

    Uniformitarianism is the assumption that the natural processes which have occurred in the geological past apply to this day, as well as the future. Uniformitarianism is the concept...

  • Waiting for answer 5 grams of Methane (CH3OH) react with 10 grams of oxygen (O2...

    NOTE: ##CH_3OH## is methanol and ##CH_4## is methane. I will solve for both since both undergo combustion reaction. So, 1) ##5## ##g## of ##CH_3OH##. The molecular mass of ##CH_3OH## is ##12+3+16+1=32## ##g## ##mol^-1## So, the moles of ##CH_3OH## are ##5/32=0.15625 ## ##mol## ##10## ##g## of ##...

  • Waiting for answer How do I work with log base e on a calculator?

    ##log_e = ln## Just use the ##ln## button it called the natural log and is written differently, If you are using a calculator you use ##ln## when the base of a ##log## is ##e##. Another example is, when the base of a log is 10 , ##log_10## in math we just write ##log##, and it is known that the ba...

  • Waiting for answer How can I difference between substitution and elimination re...

    Substitution is a reaction in which an atom or a group of atoms is replaced by another atom or group of atoms. In a general substitution reaction, Y replaces Z on a carbon atom. Substitution reactions involve ##sigma## bonds: one ##sigma## bond breaks and another forms at the same carbon atom. T...

  • Waiting for answer Is dialogue often used to provide direct, indirect, intrinsi...

    Indirect characterization. indirect characterization is characterization that is implied through clues, using dialogue, actions, appearances, words, effect on others, and thoughts. D...

  • Waiting for answer What is the square root of x^12?

    ##x^6## ##sqrt(x^12)= (x^12 )^(1/2)= x^6## Law of Exponent ( ##x^m )^(n")## = ##x^(mn)## So, ##12(1/2) = 6## Note: Index of a radical is written as a denominator when express...

  • Waiting for answer Define the term specific heat capacity of a substance and gi...

    capacity is the amount of required to raise the temperature of 1 g of a substance by 1 °Celsius. The units for it are ##J"/"g °C##.

  • Waiting for answer Can a point of inflection be undefined?

    See the explanation section below. A point of inflection is a point on the graph at which the concavity of the graph changes. If a function is undefined at some value of ##x##, ther...

  • Waiting for answer What is the Solomon Asch conformity experiment?

    Read below: He calls in a group for an experiment, but in reality there's only one subject in the group - everyone else knows what is going on, and is part of it. The group is show...

  • Waiting for answer How many disaccharides of d-glucopyranose are possible?

    There are 19 possible disaccharides of D-glucopyranose. D-glucopyranose exists in both α and β forms. The glycosidic bond can be formed between the anomeric hydroxyl group on one glucose unit and any hydroxyl group on the other glucose unit. The possible linkages are: α-Glucose + α-Glucose α...

  • Waiting for answer How do you calculate the total number of protons and electro...

    You need to figure out how many protons and electrons come from each atom in the polyatomic ion. Then you need to add or subtract the appropriate number of electrons to give the charge of the ion....

  • Waiting for answer How did the Vietnam War start?

    It started on November 1, 1955 for the Vietnamese . It would be six years before the U.S. put (non-advisory) troops there. In short, the U.S. intervention in Vietnam was inspired by...

  • Waiting for answer Density HCl 1.19 g/cm^3 Mass Percent of Solute 38 what is t...

    is defined as the mass of the , which in your case is ##"HCl"##, divided by the total mass of the solution and multiplied by 100. The easiest way to approach such solution problems is by picking a convenient sample of the solution to base the calculations on. In this case, let's pick a ##"1-L"##...

  • Waiting for answer Why is the pH of stomach acid necessary?

    Because some enzymes and hormones work in a lower . The principal reason is because some enzymes and hormones work in a lower pH, because their function depends depends in a quaterna...

  • Waiting for answer What is the dipole moment for azulene?

    The dipole moment of azulene is ##color(blue)("1.08 D")## or ##color(blue)(3.60×10^(-30) "C·m")##. In the various resonance structures for azulene, the most stable contributors put...

  • Waiting for answer What is the difference between chord length and arc length?

    A chord is a straight line joining two points. (Usually of a circle, but I suppose that use can be and has been generalized.) Chord length is, therefore, the straight line distance...

  • Waiting for answer How do you spell semicolon? Should it be hyphenated?

    It is spelled "semicolon". It can spelled either way, although most spell it without a hyphen.

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