Homework answers and tutorials

Waiting for answer How do you graph ##r=2+4sintheta## on a graphing utility?
I use www.desmos.com/calculator. You just type the equation. All that I did was type in ##r = 2 + 4sin(theta)## and it plotted this graph:
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Waiting for answer Why can't Sp3 hybrid orbitals can form pi bonds?
A single bond consists of a ##sigma## bond, which is defined as the headon overlap between two compatible orbitals. Because hybrid orbitals are made to match the symmetry of the incoming (i.e. notyetbonded) atom's atomic orbital for the sake of being able to bond at all (which is usually if...
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Waiting for answer What's 1.4 as a fraction?
##7/5 = 1 2/5## Recall.... A decimal is a way of showing fractions which have their denominators as powers of 10. The 1st decimal place shows "tenths" ie ##1/10## The 2nd decimal...
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Waiting for answer What is the distance between Saturn and the sun?
1.433 billion km or 30.1 AU The average distance of Saturn from is 1.433 billion km or 30.1 AU where 1 AU is the average distance of the Earth from the Sun. At aphelion, Saturn is...
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Waiting for answer Is a turtle really a turtle without its shell?
Technically yes but it would probably be dead. A shell is a defence mechanism for the turtle, it protects its body from predators and just general accidents. Although if a turtle is...
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Waiting for answer For an Xlinked recessive trait, 9% of the females in the po...
##42%## ##P^2=9## ##P=sqrt9## ##P=0.03## Applying the HardyWeinberg equation ##P+Q=1## Giving values ##0.03+Q=1 ## ##Q=10.03## ##Q=0.07## For heterozygotes, we have...
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Waiting for answer What is the subordinate clause of the following sentence? is...
The adjectival subordinate clause in this sentence is "that tried charging at us." A subordinate clause is a dependent clause, that is, not a complete sentence, but still provides ex...
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Waiting for answer How do you do flip chair conformations?
There is no substitute for a model. When you flip a chair conformer of a 6membered ring, each equatorial substituent becomes axial, and each axial substituent becomes equatorial. T...
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Waiting for answer How would you explain an ethyl group?
Its an alkyl derivative of ethane. Alkanes have the formula ##C_n H_(2n+2)## where in n is the number of carbon atoms. Alkanes have their carbons saturated with hydrogens and ha...
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Waiting for answer How do you solve ##Log 2 + log(4x – 1) = 3##?
##x = 5/8## You used Logarithm of a product (based on the symbol you used which is addition). ##log2 + log(4x1) = 3## ##log 2(4x1) = 3## ##log (8x2) = 3## ##8x2 = 3## ##8x = 3+2...
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Waiting for answer What is a mosaic, and where were mosaics found in the Byzant...
Mosaic is the form of figurative art that immediately followed the graffiti. Mosaic is a form of art where the image to be represented is materialised by the assembly of tiny colour...
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Waiting for answer I need some English help please. What is simple subject and...
see below simple subject: workmen simple predicate: repaired simple subject: class simple predicate: laughed simple subject: day simple predicate: ended simple su...
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Waiting for answer How do you find the slope of the tangent to the curve ##y^3x...
Use and the ##3y^2dy/dxx+y^3+2ydy/dxx^2+y^2 2x=0 ## Do some rewriting ##3xy^2dy/dx+2x^2ydy/dx+y^3+2xy^2=0## Factor and move terms without a ##dy/dx ## factor to right side ##dy/dx(3xy^2+2x^2y)=y^32xy^2## now divide both sides by ##3xy^2+2x^2y ## and factor where you can ##dy/dx=(y^2(y+2...
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Waiting for answer What is geology?
Geology is the study of the structure of the earth's crust and its layers
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Waiting for answer What is Pangea?
Pangaea was the supercontinent that existed during the late Paleozoic roughly 300 million years ago. It was surrounded by a superocean called Panthalassa. The break up of the occurred supercontinent occurred after about 100 million years as the Americas split away from Europe and Africa. Indi...
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Waiting for answer 2B5H9(l)+ 12 O2(g)= 5B2O3(s) + 9H2O(l) Calculate the kilojou...
The enthalpy of reaction is 69.58 kJ per gram of ##"B"_5"H"_9##. We have the following information. ##ΔH_"rxn"^° = ΣΔH_"f"^°("p")  ΣΔH_f^°("r")##, where ##"p"## = products and...
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Waiting for answer What is the difference between who and whom?
"Whom" is not always used when it should be. Who and Whom are Relative Pronouns , and pronouns have cases  different versions, depending on how they are used. " Who " is the...
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Waiting for answer What is an example of a song that has antimetabole in it?
More of a jingle, "I am stuck on bandaid, because bandaid's stuck on me." Bandaid commercial. Let me know if this helps.
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Waiting for answer The density of mercury metal is 13.6 g/mL. What is the mass...
##color(purple)("The mercury metal has a mass of 48.3g."## To calculate the mass of the object, we have to use the following formula:  will have units of ##g/(mL)## when dealing w...
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Waiting for answer What does the frontal lobe of the brain do?
it is the brake of the brain it controls our emotion and acts as a brake for our actions to do socially acceptable acts.. Alcohol depress this lobe and make person talkative , courag...
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