May 22, 2018 · Well, this is for chromatography... When we perform basic paper chromatography on substances, we can see what the substances are composed of, and each substance will travel up to only a certain distance on the paper. This is known as its "Rf" value, and is given by: "Rf"="distance traveled by solute"/"distance traveled by solvent" From here, we can know if a …

May 15, 2018 · Heteroskedasticity (meaning "unlike variance") is the circumstance where the variance of the response variable changes, depending on the value of the input variable. If there is evidence of heteroskedasticity in the model, then for areas where residual variance is low, #x# will do a better job of predicting #y# than for areas where residual ...

Dec 31, 2015 · The “Sum of Squares” is a mathematical way to minimize the average overall deviation of a set of points from a mean value. The term is derived from the equation used to optimize or minimize the average overall deviation of a set of points from a mean value, which is usually a regression line or curve in statistics. Using the square of the difference between …

Jan 31, 2016 · (3, 5) The x-coordinate of the vertex of a parabola is given by -b/(2a). Remember that parabolas in standard form are ax^2+bx+c. With this in mind, we can see that, for our parabola, a = 1, b = -6, and c = 14. To find the x-coordinate of the vertex, we just plug in the value of a and b into -b/(2a): Vertex = -(-6)/(2(1)) = 6/2 = 3 Now that we have the x, we plug it into …

Oct 18, 2016 · This is a kind of complicated question. A degenerate state is a state in which the energy is the same as other states. A degeneracy is the number of states that have that same energy, and is described as 2l+1. So, the difference is that degeneracy describes how many states, and a degenerate state is specifically which ones count. Any ns orbital is the same …

Oct 7, 2017 · Some examples from simple to complex... A reciprocal is a multiplicative inverse. The reciprocal of a number is a number which when multiplied by the original number gives the result 1. If n is a whole number, then its reciprocal is written 1/n. For example, the reciprocal of 7 is 1/7. If p/q is a fraction, then its reciprocal is q/p. For example, the reciprocal of 3/4 is 4/3. If …

Jun 8, 2018 · Let f(x) be a real function of real variable defined in the domain I sub RR. Let x_0 in I be a point of accumulation for I. The function f(x) is continuous in x_0 if: lim_(x->x_0) f(x) = f(x_0) that is if the limit of f(x) as x approaches x_0 equals the value of the function in x_0. This means that as x gets closer and closer to x_0, then f(x) gets closer and closer to f(x_0), so that the ...

Feb 19, 2018 · It is the result of luck, but also due to some adaptions... What it basically means is that evolution generally cannot be predicted and will not be 100% caused by previous events. It also states that evolution is a random process (well only in the first part), especially in the genetic information of the organism. Some mutations and base changes might occur for whatever …

Sep 11, 2016 · What is the value of #sin -45^@#? How do you find the trigonometric functions of values that are greater than #360^@#? How do you use the reference angles to find #sin210cos330-tan 135#?

Jul 25, 2018 · The f-block is the largest block on the periodic table. They are the inner transition elements. The f-block consists of two periods of 14 elements. There are 14 elements because the f-sublevels are being filled and an f-sublevel can contain a maximum of 14 electrons in its 7 orbitals. These elements are in periods 6 and 7 between lanthanium (""_57"La") and hafnium …