Homework answers and tutorials

Waiting for answer What is the structural and functional unit of the kidney?
Nephrons are the structural and functional units of kidneys.
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Waiting for answer What is a cresol? and what are the different types of cresol...
It's a common name for a methylphenol or hydroxytoluene, take your pick. There are only three cresols: ocresol, mcresol, and pcresol, due to the symmetric nature of benzene. Their densities are similar. They each have a hydroxyl group and a methyl group. These are ortho, meta, and para isomers...
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Waiting for answer How do you solve for y: ##2x + y = 8## , ##2x  y = 8##?
You can solve this by Elimination Method . Elimination Method: Add this two equation together to eliminate ##y## ##2x+cancely = 8 ## ##2x cancely = 8)## ##4x= 16## ##color(blue)(x= 4)## Substitute ##x## in any of the equation say, ##2x+y = 8## ##2(4)+y = 8## ##8 + y =8## transposing 8 on the...
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Waiting for answer Is the term "buffered aspirin" used correctly?
At least in the chemical sense, the term "buffered aspirin" is used incorrectly. Aspirin is a weak acid. In aqueous solution, it ionizes according to the equation HA + H₂O ⇌ H₃O⁺ + A⁻ The stomach contents are highly acidic, with a between 1.5 and 3.5. This pushes the position of equilibrium to...
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Waiting for answer Dogs have 78 chromosomes in their diploid cells. How many ch...
There are ##39## chromosomes in their haploid cells. During I, the ##78## chromosomes in a diploid cell line up at the equator of the cell. Note that the chromosomes have already re...
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Waiting for answer How do you find the vertex and intercepts for ##y = (x5)^2...
(5,2) , (0,27) , no xintercepts The standard vertex form of a quadratic function is ##color(red)(bar(ul(color(white)(a/a)color(black)( y =a (x  h)^2 + k)color(white)(a/a))))##...
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Waiting for answer A 1000watt microwave oven takes 60 seconds to heat a bowl o...
The microwave uses ##6000 J## of energy. Where ##P## = Power, ##t## = time, and ##W## = work ... ##P = 1000## watts ##t = 60## seconds The formula for Power is given by: ##P = W/t## Therefore: 1000 Watts = ##W/60## So ... ##W=1000(60) =6000 W## (or J=Joules) From this, we can say that a mic...
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Waiting for answer If lemonade costs $0.52 per pint, what is the cost per cup?
$0.26 per cup The “units” will be $/cup. The math will be conversion of pints to cups. There are 2 cups in a pint (you can look that up or Google it). So our conversion ratio val...
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Waiting for answer What is aphasia?
A language disorder that affects a person's ability to communicate. In short , it is inability of a person to pronounce words properly die to damage in Brocas motor speech are of temporal lobe of fore brain.
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Waiting for answer Is parathormone an anterior pituitary hormone?
Parathormone is secreted by parathyroid glands. These glands are present on the dorsal side of thyroid gland.
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Waiting for answer Why is amide protonated on oxygen rather then in nitrogen ??
Consider structures, ##RC(=O)NH(R)## versus ##RC(O^)=N^+HR## The second structure is the amide equivalent of an enolate anion. Evidently, more electron is concentrated on the ox...
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Waiting for answer Why do your ears ''pop'' as you drive up a mountain?
Your ears "pop" as you drive up a mountain because the decreases as the altitude increases. Your middle ear (behind the eardrum) is connected to the inside of your throat by your E...
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Waiting for answer At the Holiday Valley Ski Resort, skis cost $16 to rent and...
There were ##18## skiers and ##10## snowborders. Assume, there were ##X## skis and ##Y## snowboards rented. Since there were ##28## people who rented equipment, we have the first equ...
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Waiting for answer What is an asteroid? Where are most located?
When our star Sun was young, small countless planetesimals orbiting coalesced, conjoined and aggregated to form bigger planetoids, larger midget planets and very large planets.. Smaller starfish like rocky planetoids are called asteroids Most of the known asteroids are orbiting the Sun, in...
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Waiting for answer Novocaine, which is used by dentists as local anaesthetic, i...
##(["B"])/(["BH"^(+)]) = 0.0281## There are two ways in which you can approach this problem, one using the base dissociation constant and the solution's ##pOH##, and the other one us...
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Waiting for answer What are the characteristics of life?
RINGER. To remember the charactristics of life, scientists use a word "RINGER". If a thing has all the properties mentioned in "RINGER" than the thing is considered as living. Me and...
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Waiting for answer What is the standard form of the equation of a circle with c...
Equation of circle is ##x^2+y^2+6x6y+14=0## and ##y=1## is tangent at ##(3,1)## The equation of a circle with center ##(3,3)## with radius ##r## is ##(x+3)^2+(y3)^2=r^2## or ##...
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Waiting for answer What are the factors of 23? Is 23 prime or composite?
##23## has only 2 factors  it is prime. A prime number can be defined as: "A natural number which has only 2 factors  itself and 1". 23 has only 2 factors:##" "23 = 1 xx23## T...
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Waiting for answer What are the differences between cilia and pili?
main difference is in the function pili are special extension of bacterial cell which are made for conjugation in bacterial cell, whereas cilia do not perform this function. cilia a...
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Waiting for answer What does the weak force do?
The weak force mediates radioactive decay. The weak W bosons mediate the conversion of a proton into a neutron or vice versa. A neutron consists of an up quark and two down quarks. A...
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