Homework answers and tutorials

What we could find:
49320 results
  • Waiting for answer How many orbitals are there in the third shell (n=3)?

    9 The third shell contains one s-orbital, three p-orbitals, and five d-orbitals. Each orbital holds 2 electrons, so 18 electrons can fall in the third shell, or n=3.

  • Waiting for answer How do you find a tangent line parallel to secant line?

    You can find a tangent line parallel to a secant line using the Mean Value Theorem. The Mean Value Theorem states that if you have a continuous and differentiable function, then ##f'(x) = (f(b) - f(a))/(b - a)## To use this formula, you need a function ##f(x)##. I'll use ##f(x) = -x^3## as an exa...

  • Waiting for answer Why does magnesium hydroxide dissolves in aqueous ammonium c...

    Two words: . Magnesium hydroxide, ##"Mg"("OH")_2##, is considered insoluble in aqueous solution. Magnesium hydroxide has a , ##K_"sp"##, equal to ##1.5 * 10^(-11)##, which means th...

  • Waiting for answer Each exterior angle of a regular polygon measures 20. How ma...

    18 sides The exterior angle of a polygon is the angle outside the interiour angle with the same base. For eg. Consider the following pentagon Since the interior angle and exterior a...

  • Waiting for answer What is the chemical formula for acetone?

    chemical formula for acetone Acetone is also called propanone or propan-2-one using IUPAC nomenclature, containing a carbonyl group which is a -c=o Carbonyl Group It has two Methy...

  • Waiting for answer What pressure would it take to compress 200 L of helium gas...

    ##P_1V_1=P_2V_2##, given constant temperature and given quantity of gas. ##P_2=(P_1V_1)/V_2## ##=## ##(200*Lxx1.00*atm)/(2.00*L)## ##=## ##"A lot of atmospheres"##

  • Waiting for answer Romeo and Juliet Act IV: How does Paris think Juliet feels a...

    He doesn't realize how terribly sad she is, and what she is sad over. He assumes her to be fine about the marriage. "...Which, too much minded by herself alone, May be put from her...

  • Waiting for answer How can the periodic table be used to determine molar mass?

    The molar mass of a substance is the substance's mass divided by its amount. The amount of a substance is usually set at 1 mole and it's the substance's mass needs to be calculated to find out the molar mass. The that compose a substance all have an . The substance's mass is the sum of all of thos...

  • Waiting for answer What are some natural anti-inflammatories, such as foods, he...

    Dietary components can either prevent or trigger inflammation from taking root in our body. The following foods and nutrients have the ability to quell inflammatory responses in the...

  • Waiting for answer How many trophic levels are included in the energy pyramid?

    Four There's producers at the very bottom, then herbivores, small carnivores and large carnivores/omnivores. Humans would be at the very top of the trophic level. The below pictur...

  • Waiting for answer What happens to the area of a kite if you double the length...

    The area of a kite is given by ##A=(pq)/2## Where ##p,q## are the two diagonals of the kite and ##A## is the area of he kite. Let us see what happens with the area in the two conditions. ##(i)## when we double one diagonal. ##(ii)## when we double both the diagonals. ##(i)## Let ##p## and ##q## b...

  • Waiting for answer Is ##NaOH## an acid or base? Is it considered strong or wea...

    NaOH is a strong base. 1. It is a STRONG BASE because it dissociates completely in water to form hydroxide ions. ##NaOH → Na^+ + OH^-## 2. It reacts with acid to give a salt an...

  • Waiting for answer What is the diameter of the earth in km?

    12,756km Earth is the largest terrestrial planet in the solar system. The equatorial diameter is 42 km longer than the polar diameter.

  • Waiting for answer What is pus? Is it just white blood cells?

    Pus is an accumulation of dead white blood cells (leucocytes) and the bacteria destroyed by the ##WBCs## floating in serum. Pus is an accumulation of dead white blood cells (leucoc...

  • Waiting for answer What is the structure of the hemiacetal formed by reaction...

    Butanone is more specifically 2-butanone, due to symmetry and the number of carbons on the main chain. This reaction also requires acid if you are using methanol as-written. Furthermore, it is a hemiketal that forms, since butanone is a ketone , not an aldehyde. This reaction might then keep goi...

  • Waiting for answer What is the decay equation of cesium 137?

    ##""_ 55^137Cs - ""_ 56^137Ba + ""_"-1"^0beta## Cesium-137 has an of 55, so is written as ##""_55^137Cs##. It is also a ##beta##-emitter, which means it undergoes ##beta##-de...

  • Waiting for answer What kind of reaction occurs when you mix aqueous solutions...

    A smelly one ##BaS(aq) + H_2SO_4(aq) rarr BaSO_4(s)darr + H_2S(aq)## This is (i) an acid base reaction, and (ii) a precipitation reaction as barium sulfate is pretty insoluble stuff...

  • Waiting for answer What are lymphocytes and why are they important to immunity?

    Lymphocytes are a type of white blood cell. Lymphocytes are a type of white blood cell that produces antibodies and antitoxins. The antitoxins destroy the toxins produced by bacteria...

  • Waiting for answer What phases of matter are compressible?

    Gases and Liquids are compressible. In a gas, the particles are very far away from each other, so there is a lot of space for the particles to be compressed down in to. This is very helpful when transporting gases in containers. In a liquid, the particles have slightly overcome the forces holding...

  • Waiting for answer If the total revenue function for a hammer is ##R=36x-.01x^2...

    I got ##1800## hammers or ##$32400## We can derive our function and set it equal to zero. This will give us a max or min (in this case I know it is a max) and the corresponding ##x##...

Show on page

Learn more effectively and get better grades!

Do my homework