Homework answers and tutorials

Waiting for answer What are metal activity series?
An activity series is a list of substances ranked in order of relative reactivity. For example, magnesium metal can displace hydrogen ions from solution. So magnesium is more reactive than hydrogen: Mg(s) + 2H⁺(aq) → H₂(g) + Mg²⁺(aq) Zinc metal can also displace hydrogen ions from solution: Zn(...
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Waiting for answer How does the muscular system function?
The function of the muscles includes the Following: the muscles provide shape of the body, it serves as protection for your internal organs and nerves, it provides support on the bo...
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Waiting for answer What is the secant of 270 degrees?
Undefined On the unit circle, the xcoordinate is the cosine (cos) of the degrees. 270º has the coordinates of (0,1) but you are asked to find the secant (sec). sec=##1/cos(º)##. an...
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Waiting for answer On a mountaintop, it is observed that water boils at 90°C, n...
Because the boiling point reduces with DECREASING ambient pressure. By definition, the boiling point of a liquid, any liquid, is the temperature at which the vapour pressure of the...
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Waiting for answer Why is luster important for mineral identification?
Its one of many diagnostic tests in and particularly good for identifying metallic minerals which tend to have a shiny metallic luster. The luster of a mineral is the way that it r...
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Waiting for answer Enlightenment thinkers influenced America's Founders. What d...
John Locke believed in natural law. that people had God given rights to life, liberty and property. John Locke unlike the French Enlightenment thinkers was not antagonist toward bel...
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Waiting for answer What were the problems with the theory of continental drift?
One main reason: The idea that something so great as a continent could move around as easily as a toy in the bathtub was preposterous. The problem was that they could not find the so...
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Waiting for answer What is a solvent?
A solution is composed of a being dissolved in a . If you make Kool Aid. The powder of Kool Aid crystals are the solute. The water is the solvent and the delicious Kool Aid is the solution. The solution is created when the particles of the Kool Aid crystals diffuse throughout the water. The sp...
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Waiting for answer How do you use anaphora in a sentence?
When Bill pulled himself out of the swamp, his hair was full of slime; his ears were full of slime; his eyes were full of slime; and other parts of his anatomy he didn't want to think about were full of slime....
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Waiting for answer What is the average deviation of ##1.76, 2.28, 1.90##?
mean deviation ##=0.2## Compute mean ##barx## ##barx=(1.76+2.28+1.90)/3=1.98## Mean deviation ##=(sum abs(xbarx))/n## Mean deviation ##=(abs(1.761.98)+abs(2.281.98)+abs(1.901....
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Waiting for answer One year on Mercury is equal to 87.97 Earth days. One year o...
Sorry it is a bit long but I wished to explain about ambiguities in the question and the derivation of units/equations. The actual calculations are short! With assumptions I get ## ~~ 0.69color(white)(.) "Earth years"##...
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Waiting for answer What is the area and circumference of of circle with diamete...
The area of circle is ##314.16## square inches and circumference is ##62.832## inches. Area of a circle with radius ##r## is given by ##pir^2## and circumference is given by ##2pir...
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Waiting for answer What is the definition of the Inverse Sine Function?
The Inverse Sine Function is denoted by, ##arc sin ## or, ##sin^1## and is defined by, ##arc sin x=theta, x in [1,1] iff sin theta=x, theta in [pi/2,pi/2]## The Inverse Sine F...
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Waiting for answer What are spinal nerves?
Spinal nerves come off the spinal cord. There are thirtyone pairs of spinal nerves are connected to the spinal cord. They have no special names but are numbered by level of vertebral column at which they emerge from the spinal cavity. There are: Eight cervical nerve pairs (C1 through C8) Twelv...
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Waiting for answer In order to open the clam it catches, a seagull will drop th...
##2.3s## (2sf), Assuming dropped from rest vertically with no air resistance. Assuming that we are treating the clam as falling vertically from rest with no air resistance, the follo...
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Waiting for answer Can Newton's Law of Cooling be used to find an initial tempe...
Yes, if you know the room temperature and the temperature of the cooling object at two known times ##t_{2} t_{1} 0## after the initial time ##t_{0}=0##. I will do this in the general...
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Waiting for answer What is the relationship between passive and active transpor...
use ATP to pump the nutrient against/up the concentration gradient. Transport occurs from a low concentration of solute to high concentration of solute. Requires cellular energy. And Passive transport is Movement of molecules DOWN the concentration gradient. It goes from high to low concentration,...
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Waiting for answer How did Mansa Musa, Sonni Ali, and Askia Muhammad change the...
Mansa Musa, Sonni Ali, and Askia Muhammad were all very effective leaders, and led their respective civilizations into golden ages. Mansa Musa Mansa Musa was arguably the greatest M...
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Waiting for answer How do you find the square root of 17?
##sqrt(17)## is not simplifiable and is irrational. We can calculate rational approximations like: ##sqrt(17) ~~ 268/65 ~~ 4.1231## Since ##17## is prime, it has no square factor...
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