Homework answers and tutorials

Waiting for answer What is the hydroxide ion concentration in a solution of ##"...
##["OH"^()] = 2.24 * 10^(5)"M"## Your starting point here will be the definition of a solution's ##"pOH"##, which as you know is defined as the negative log base ##10## of the con...
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Waiting for answer How do the definitions of phototrophs and chemotrophs differ...
autotroph and heterotroph refer to whether an organism prepare its own food or get it in prepared form from any other source.. where as phototrophs and chemotrophs mention to the way which an organism take to prepare its food......
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Waiting for answer Why were truebreeding pea plants important for Mendel's ex...
Because their genetic make up is known for sure to be homozygous so the offspring's genotype is known for sure. This means that the phenotype of the offspring can tell which trait is dominant....
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Waiting for answer What is the integral of sin(x) dx from 0 to 2pi?
An alternative way to do this starting from the limit definition is: ##int_(a)^(b) f(x)dx = lim_(n oo) sum_(i=1)^N f(x_i^"*")Deltax## where: ##n## is the number of rectangles used to approximate the integral, i.e. the area between the curve and the xaxis. ##i## is the index of each rectangle...
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Waiting for answer Why is a ladder an inclined plane?
By definition, as listed on Wikipedia: "An inclined plane is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load." This is exactly how we use a ladder. Whether the load is us, or something that we are carrying, we use the l...
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Waiting for answer How do viruses reproduce?
Through the transcription and reverse transcription of RNA Firstly they need to invade other (such as phage) or invade other creatures, then they take the host as raw materials to...
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Waiting for answer How do you graph the inequality ##3x+4y<=12##?
Graph the line of ##(3x+4y=12)## using two arbitrary solutions; then shade in the side of the line containing the point ##(0,0)## ##3x+4y =12## includes all points on the line ##3x+4...
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Waiting for answer Why is law of definite proportions important?
Because it defines that all water molecules are ##H_2O##, for example. The law of definite proportions dictates that a name is always associated with a specific ratio of found in a...
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Waiting for answer When solutions of silver nitrate and potassium chloride are...
Since you've got the first part, I'll just answer the second question, so to speak. So, you've got your balanced chemical equation for this reaction ##AgNO_(3(aq)) + KCl_((aq))  AgCl_((s)) + KNO_(3(aq))## You know that you have a ##"1:1"## between all the species involved. This means that t...
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Waiting for answer What percent of 20 is 4?
20% Very detailed answer. Shows 2 methods and also explains the difference between fraction and ratio Using the shortcut method If I were to be answering this for my self it would l...
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Waiting for answer How do you find the slope of the line whose equation is ##2x...
The of the line is ##1/2##. The equation of a line in is ##y=mx + b##, where ##m## is the slope, ##b## is the yintercept, and ##x## and ##y## are a point on the line. In order to determine the slope from the given equation, do the following: ##2x  4y = 10## (Subtract ##2x## from both sides.)...
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Waiting for answer How do the central and peripheral nervous system work togeth...
The Central Nervous System (CNS) and Peripheral Nervous System (PNS) work together in a multitude of ways. The PNS is ultimately the extension of the CNS. By simple definition, the CNS is located in the spine and in the skull. The PNS in simple definition is everything else. The CNS does the bulk...
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Waiting for answer How do you convert (x3)squared +(y+4)squared =25 to a polar...
##r=2(3 cos theta  4 sin theta )##. Graph is inserted. The conversion formula is ##(x, y)=r(cos theta, sin theta)## So, the polar equation is (r cos theta 3 )^2+(r sin theta + 4...
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Waiting for answer A card is drawn from a standard deck of 52 playing cards. Wh...
##2/13## There are 52 cards in a standard deck: 13 ordinal cards (Ace  10, Jack, Queen, King) and 4 of them  one to each suit (hearts, diamonds, clubs, spades) and so we have ##4xx...
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Waiting for answer What is the SI for a unit of power?
is measured in watts. A watt is the power that it takes to do one joule of in one second. It can be found using the formula ##P = W / t##. (In this formula, W stands for "work.") Large amounts of can be measured in kilowatts (##1 kW = 1 \times 10^3 W##), megawatts (##1 MW = 1 \times 10^6 W##),...
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Waiting for answer What is the difference between an oxymoron and antithesis?
An oxymoron is a phrase that uses two contradictory or opposing terms, while an antithesis is a device that presents two contrasting ideas in a sentence (but not in the same phrase)....
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Waiting for answer How many pints of blood are in a woman's body?
The average woman has nine to ten pints of blood in her body. Per the American Red Cross, the average adult has 10 pints of blood, depending on weight. Men average 10 to 11 pints a...
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Waiting for answer Which is more stable, cis 1ethyl2methylcyclohexane or t...
The more stable of the two will be trans1ethyl2methylcyclohexane , and here's why that would be. I'll compare the two most stable for each molecule. If you want to see why these chairs are the most stable Now, here's the most stable chair conformer for trans1ethyl2methylcyclohexane Notice th...
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Waiting for answer What is the derivative of ##f(theta)=arcsin(sqrt(sin(9theta)...
##(df)/(d theta) = 9/2 * cos(9theta)/(sqrt(sin(9theta)) * sqrt(1  sin(9theta)))## You can differentiate this function by using , provided that you don't know what the derivative of...
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Waiting for answer How small is Earth compared to the largest known star?
Largest known star UY Scuti is 1708 times bigger than SUn.by Radius. Suns radius is 696265 Kilometers. Earth's radius is 6378.KM
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