Chemists commonly use a rule of thumb that an increase of 10 K …
网页2017年1月28日 — The Arrhenius equation will tell us that the activation energy in this case must be 52.4 kJ/mol. The Arrhenius equation says that the dependence of the rate constant k on temperature reads k=Ae^(-(E_a)/(RT)) For the sake of this problem, let us say that k_1 is the initial value of the constant at a temperature T_1, and k_2 is the value at temperature T_2 To double the reaction rate, we must ...
What is the 10% rule used in an energy pyramid? - Socratic
网页2016年2月12日 — The 10% rule refers to the amount of energy available to the next trophic level. When energy moves between trophic levels , 10% of the energy is made available for the next level. (The exception is the transition from the sun to producers, in which case only 1% of the energy is retained.) When a consumer eats a plant, it gains energy from the plant. That energy is used for growth, reproduction ...
What is the probability that their average is greater than 93?
网页2018年3月3日 — IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What is the probability of a score greater than 110?
Polarity of Bonds - Chemistry - Socratic
网页Water is a polar solvent: the O end has a partial negative (δ−) charge, and the H ends have δ+ charges. When you put the salt in water, the δ+ ends of the water molecules surround the Cl− ions from the NaCl, and the δ− ends of the water surround the Na+ ions of the NaCl. The ions become solvated (hydrated). This is an energy-releasing ...
Why can nerve impulses travel only in one direction? - Socratic
网页2016年3月27日 — The best generic answer from a 2008 post follows (with my own edits for clarity): A Nerve electrical impulse only travels in one direction. There are several reasons nerve impulses only travel in one direction. The most important is synaptic transport. In order for a "nerve impulse" to pass from cell to cell, it must cross synaptic junctions.
What percent error is too high? - Socratic
网页2014年3月21日 — The acceptability of a percent error depends on the application. > In some cases, the measurement may be so difficult that a 10 % error or even higher may be acceptable.
Why are amino acids chiral? + Example - Socratic
网页2014年10月28日 — A rule of thumb for determining the D/L isomeric form of an amino acid is the "CORN" rule. You arrange the groups CO OH, R, N, and H so that the H atom is pointing away from you. If the arrangement of the CO→ R →N groups is counterclockwise, it is the L form. All amino acids found in proteins have the L-configuration.
Mixtures - Chemistry - Socratic
网页Explanation: Compounds are essentially the amalgamation of different elements in which the separation of said elements would be difficult. Additionally, when compounds occur, energy can be given off or absorbed, unlike mixtures. Mixtures are essentially an amalgamation of different elements in which no chemical reaction occurred.
Indeterminate Forms and de L'hospital's Rule - Socratic
网页L'hopital's rule is used primarily for finding the limit as x → a of a function of the form f (x) g(x), when the limits of f and g at a are such that f (a) g(a) results in an indeterminate form, such as 0 0 or ∞ ∞. In such cases, one can take the limit of the derivatives of those functions as x → a. Thus, one would calculate lim x→a f ...
What is the integral of #cos^6(x)#? - Socratic
网页2014年12月19日 — Explanation: This will be a long answer. So what you want to find is: ∫cos6(x)dx. There's a rule of thumb that you can remember: whenever you need to integrate an even power of the cosine function, you need to use the identity: cos2(x) = 1 +cos(2x) 2. First we split up the cosines: ∫cos2(x) ⋅ cos2(x) ⋅ cos2(x)dx.