Homework answers and tutorials

Waiting for answer How do you find an equation of the tangent line to the curve...
Try this: Graphically:
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Waiting for answer Approximately how many Americans died during the Vietnam War...
58,315 https://en.wikipedia.org/wiki/Vietnam_War_casualties American Armed Forces personnel The number of Americans that died can be fair accurately determined since they were membe...
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Waiting for answer How do you convert 355 kJ to cal?
##"1 calorie"## ##=## ##4.184*J## And thus ##355*kJ## ##=## ##355xx10^3*Jxx1/(4.184*J*cal^1)## ##~=## ##8500*cal##
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Waiting for answer During a lunar eclipse, what color is the moon?
During a total lunar eclipse the Moon typically turns ##\color(red){"red"}##. That's because the "shadow" of the Earth is not completely dark. Our atmosphere acts like a weak lens t...
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Waiting for answer What substance is produced by the ceruminous glands?
Ear wax (when mixed with sweat and dead skin cells) Ceruminous glands produce a substance that when mixed with sweat and dead skin cells, becomes cerumen, which is otherwise known as...
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Waiting for answer What are some of Cinderella's character traits?
I am going to illustrate this question with the typical fairytale story of Cinderella. Please note that this is not the Disney version. So, obviously, one of the traits most well kno...
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Waiting for answer What is the net ionic equation that represents a neutralizat...
##2H^+ (aq) +2OH^####(aq)  2H_2O (l)## First step is to predict the products side of the reaction and then balance the equation . Take note of solubility rules when predicting pro...
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Waiting for answer Is calcium oxide (CaO) an ionic compound or covalently bonde...
It is an ionic compound. An ionic bond is between a metal and nonmetal , while a covalent bond is between two or more nonmetals. Calcium, a metal element, is bonded to the nonmeta...
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Waiting for answer How do you solve for y: ##2x – 3y = 6##?
##2x6/3 = y## Move ##3y## to the right side and ##6## to the left side. then ##6## will become ##6## and ##3y## will be ##+3y.## ##2x6=3y## Then put ##3## below ##2x6## ##(2x6)/3 = y## in order to get the value of ##y## Simplify further: ##y=2/3x 2##
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Waiting for answer How do you find the derivative of ##cotx##?
##dy/dx = csc^2x## ##y = cotx## ##y = 1/tanx## ##y = 1/(sinx/cosx)## ##y = cosx/sinx## Letting ##y= (g(x))/(h(x))##, we have that ##g(x) = cosx## and ##h(x) = sinx##. ##y' = (...
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Waiting for answer Is the fuel efficiency (in miles per gallon) of an automobil...
Continuous an easy way to check if your data is discrete of continuous is to ask yourself, will my result be a ##RR## number? if so, then your data will most likely be continuous, as you could end up with ##oo## many different results. which in this case, you could go ##3.4657## miles per gallon....
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Waiting for answer Density =gm/cc So , what is the meaning of cc??
cc is cubic centimeters, "cc" should not be used. "##cm^3##" is the correct way of writing. And "gm" is also wrong. It shoul be only "g".
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Waiting for answer How does a positive ion form?
By giving away an electron. I'm assuming you are talking about . on the leftmost part of of elements have one extra electron to the . This is why they want to give an electron aw...
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Waiting for answer What is the oxidation number for all elements of ClO2?
Cl = +3 and O = 2 ##ClO_2^()## is a polyatomic ion with a charge of 1 The charge of chlorine is: +3 The charge of each oxygen is: 2 So how do you figure this out? Oxygen alway...
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Waiting for answer You are standing 40 meters from the base of the tree that is...
The tree is about 16.28 meters tall. First, we draw a diagram to represent the problem. To convert the angle measurement from minutes to a decimal, divide the minutes by 60, and add that to the degrees. That's our new angle measurement. ##50/60= 0.833+20= 20.833## To find the angle the tree makes...
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Waiting for answer The pH of 0.1 M HClO2 was measured to be 1.2, what is the va...
Based on these values the pka = 0.967 Like many chemistry problems, the first thing to do is to write a chemical formula: ##HClO_2+H_2O  ClO_2^() + H_3O^+## Then we can write an...
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Waiting for answer What is the role of RNA polymerase in protein synthesis?
RNA polymerase enzymes are essential to life and are found in all organisms and many . In chemical terms, RNAP is a nucleotidyl transferase that polymerizes ribonucleotides at the 3' end of an RNA transcript. RNAP can initiate transcription at specific DNA sequences known as promoters. It then produ...
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Waiting for answer How many grams of solute are present in 50 mL of 0.360 M sod...
There are 1.05g of present. Let's start off with the equation for : We are given the molarity and the volume of solution. The only issue is that the volume is given in mL instead...
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Waiting for answer In Bohr's model of the atom, where are the electrons and pro...
Electrons were in orbits around the nucleus, which contained protons and neutrons. For more information on Bohr's Model,
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Waiting for answer What is the difference between Carbon 12, 13, and 14?
The difference is the number of neutrons. Carbon 12, 13 and 14 are carbon isotopes, meaning that they have additional neutrons: Carbon 12 has exactly 6 protons and 6 neutrons ( he...
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