Homework answers and tutorials

Waiting for answer What is an antigenantibody reaction?
Antigen antibody reaction is a specific chemical interaction, between antibodies produced by B cells of the WBC's and antigen, during an immune reaction. It is a fundamental reactio...
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Waiting for answer What limits does the Twentysecond Amendment of the Constitu...
No person can be elected as president more than twice. Each term is 4 years long and can be renewed only once.
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Waiting for answer What is the limit as x approaches infinity of ##arctan(x)##?
Let us figure this out from our knowledge about ##tanx##. We know: as ##x to pi/2"^##, ##tanx to +infty## Since ##arctan x## is the inverse function of ##tanx##, ##pi/2 x pi/2##, we can swapping the relationship above to obtain: as ##x to +infty##, ##arctanx to pi/2"^## Hence, ##lim_{...
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Waiting for answer How do you find the derivative of ##y=arcsin(1/x)##?
First, recall the identity ##d/dx[arcsinalpha] = 1/(sqrt(1  x^2))##. If this identity doesn't look familiar then I may recommend viewing a few videos from as they present a couple identities like this, and explain why they are true. Differentiating ##arcsin (1/x)## is just a matter of using the...
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Waiting for answer How do metalloids bond?
metals bond among their atoms not with other metals. we know that every element is made up of atoms of similar . the bond among the atoms of element is called metallic bond . metal...
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Waiting for answer How do you find a power series representation for ##ln(5x)...
We can start from the power series that you were taught during the semester: ##1/(1u) = sum_(n=0)^(N) u^n = 1 + u + u^2 + u^3 + ...## Now, let's work from ##ln(5x)## to get to ##1/(1u)##. ##d/(dx)[ln(5x)] = 1/(5x) = 1/5*1/(1x/5)## Thus, with ##u = x/5##, we had just taken the derivat...
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Waiting for answer What does the ABC stand for in standard form Ax+By=C?
##Ax+By+C## is a generalized form (in fact the standard generalized form) for a linear equation where ##A, B, and C## are placeholders for constants (the ##x## and ##y## are variables). The generalized form, ##Ax+By+C##, includes equations such as ##color(white)("XXXXX")####7x+3y=98## ##color(white...
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Waiting for answer What did some Northern states do to oppose the Fugitive Slav...
Northern States were so angered by the Fugitive Slave Law, They passed special laws nullifying the law, participated in civil disobedience and helped slaves escape to Canada. Many se...
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Waiting for answer What does pi 8 mean?
the most likely meaning is ##pi xx 8## or ##pi*8## or ##8 pi## pi is the English (and other) spelling for the Greek letter ##pi## ##pi##, of course, is the ratio of the Circumferenc...
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Waiting for answer Why did Africans engage in slave trade? Did they have a choi...
Many Africans were captured and sold by other Africans. The Africans that captured them would sell them to the Europeans, who would in turn bring them to the Americas to work on plantations and do other menial work. The Africans who complicity engaged in slave trading themselves did so because they...
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Waiting for answer AgNO3 (3 is a subscript) + NaCl > NaNO3 (3is a subscri...
You would see ##"12.7"## grams of silver chloride and ##"7.51 g"## of sodium nitrate formed after this reaction takes place. So, you're basically dealing with a which leads to the formation of a white precipitate, silver chloride. The balanced chemical equation for this reaction looks like this...
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Waiting for answer How does a mitochondria relate to photosynthesis?
The mitochondrion converts the formed by into ##"CO"_2## and ##"H"_2"O"##, with the energy going into the formation of ##"ATP"##. Photosynthesis is food production using the ener...
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Waiting for answer How did Franklin D. Roosevelt's New Deal coalition affect Af...
For the first time ever, most Blacks voted Democratic. In the years leading up to , The Democratic Party was the party of Southern planters and the Republicans were the party of Nort...
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Waiting for answer Suppose a 375mL sample of neon gas at 78°C is cooled to 22°...
We can find the effect of temperature on the Volume using the equation. ##V_1 ## / ##T_1## = ##V_2## / ##T_2## ##V_1## = 375 mL , ##T_1## = 273 + 78 = 351 K ##V_2## = ? , ##T_2##= 273 + 22 = 295 K 375 mL / 351 K = ##V_2## / 295K 375 mL x 295 K / 351 K = ##V_2## ##V_2## = 110625 L K/...
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Waiting for answer Is CO2 polar or nonpolar?
It's nonpolar. The C=O bond actually has dipole moment. However, since there are two of them O=C=O which are symmetrical, they cancel each other out.
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Waiting for answer How can we convert minutes into seconds?
Since there are 60 seconds in a minute: Number of minutes x 60 s/min = number of seconds Example: Convert 75.6 minutes to seconds. 75.6 min x 60 s/min = 4,536 s
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Waiting for answer How do you find a unit vector that has the same direction as...
Divide each term by the magnitude of the vector to get: ##color(white)("XXX")##unit vector: ##color(green)(5/sqrt(106)i+9/sqrt(106)j)## Using the Pythagorean Theorem: ##color(white)...
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Waiting for answer Please balance the following equation?? MnO4 + I = MnO...
The best way to do this is by using the halfreaction method. No matter what redox equation you need balanced, know that if you use the halfreaction method, though it may be a bit more work than other ways, it will always give you the right answer (that is, as long as you do it right). First we w...
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Waiting for answer How do you write the prime factorization of 100?
## 2 xx 2 xx 5 xx 5 ## or ## 2^2 xx 5^5## 100 can be factored into ## 10 xx 10## or ##10^2## The exponent 2 indicated that there are two factors of 10 However 10 is not a prim...
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Waiting for answer What was the outcome of the Gadsden Purchase?
The Gadsden Purchase provided a route for the Southern Pacific Railroad. After the Mexican War, the southern border of the United States did not assume its current configuration. Wha...
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