Chemistry concepts and calculations
117302 questions • Page 1954 / 2347
What does Schmidt mean when he says that “The goal is not so much better enginee
What does Schmidt mean when he says that “The goal is not so much better engineering decisions, but rather better engineering decision makers. a)” He means that moral decisions ar…
What does VSEPR model mean? A) Very Specific Electron and Proton Repair model B)
What does VSEPR model mean? A) Very Specific Electron and Proton Repair model B) Variable Selective of Electron and PRotons C) Valence Shell for Every Proton D) Very Selective Ele…
What does \"OD\" mean in the following chemistry problem answer? Question: If yo
What does "OD" mean in the following chemistry problem answer? Question: If your curvette had been dirty, how would this have affected the value of ksp? Answer: the more dirt on t…
What does a Lewis structure NOT show? a. nonbonding electrons b. three-dimension
What does a Lewis structure NOT show? a. nonbonding electrons b. three-dimensional molecular shape c. charges (when applicable) d. bonding of atoms e. bonding arrangement of atoms…
What does a Lewis structure NOT show? a. nonbonding electrons b. three-dimension
What does a Lewis structure NOT show? a. nonbonding electrons b. three-dimensional molecular shape c. charges applicable) d. bonding electrons of atoms e. bonding arrangement Whic…
What does a positive value of q tell us about the temperature change of a sample
What does a positive value of q tell us about the temperature change of a sample of water? And is this process endothermic or exothermic? Heat is being released by the water so th…
What does boiling do to the toothpaste?Suggest another way aside from boiling? W
What does boiling do to the toothpaste?Suggest another way aside from boiling? What is role of fluoride in the toothpaste? Describe the chemistry of a fluoridated enamel versus a …
What does it mean for a chemical reaction to be at equilibrium? In part 2 of thi
What does it mean for a chemical reaction to be at equilibrium? In part 2 of this experiment, you used the indicator methyl orange. Why was this indicator chosen instead of phenol…
What does it mean if a member is declared private? A. It is not available to any
What does it mean if a member is declared private? A. It is not available to any other classes at all B. It is available to subclasses of the current class, but nothing else C. It…
What does it mean to describe a reaction as \"reversible\"? When writing an equa
What does it mean to describe a reaction as "reversible"? When writing an equation, how is a reversible reaction distinguished from a nonreversible reaction? If a reaction is reve…
What does it mean when it asks to update this class (Class Person) so it can be
What does it mean when it asks to update this class (Class Person) so it can be serialized? import java.io.Serializable; public class Person{ private String firstName; private …
What does the \"2\" in Sn2 refer to? A. The rate of the reaction depends upon th
What does the "2" in Sn2 refer to? A. The rate of the reaction depends upon the concentration of two reactants. B. The reaction produces two products that are related as diastereo…
What does the angular momentum quantum number determine in a hydrogen atom? What
What does the angular momentum quantum number determine in a hydrogen atom? What does the angular momentum quantum number determine in a hydrogen atom? Part B What does the angula…
What does the appearance of the H3O indicate about the strength of the acid? Put
What does the appearance of the H3O indicate about the strength of the acid? Put the statements under the correct heading. What does the appearance of the H3O* indicate about the …
What does the color or shading of a lobe in an orbital drawing represent? The el
What does the color or shading of a lobe in an orbital drawing represent? The electron density in that lobe of the orbital when the orbital is occupied. select one of the above. T…
What does the first law of thermodynamics state? a) Energy in the universe Is co
What does the first law of thermodynamics state? a) Energy in the universe Is constant. b) In a spontaneous process, the entropy of the universe increases. c)The entropy of a syst…
What does the super keyword represents and where can it be used? Give an example
What does the super keyword represents and where can it be used? Give an example of a superclass and subclass. Be sure to make all the instances variables of the super class priva…
What does the symbol Mg2+ represent? A magnesium atom that has acquired twoelect
What does the symbol Mg2+ represent? A magnesium atom that has acquired twoelectrons. A magnesium atom with twoprotons. A magnesium atom with twoelectrons. …
What does the term S_n 1 mean? Substitution, S_n 1 mean? Elimination, unimolecul
What does the term S_n 1 mean? Substitution, S_n 1 mean? Elimination, unimolecular Both a and b D. None of above In the reaction below, what type of reaction occurred? E2 E1 S_n2 …
What does the term \"endpoint\" mean in this experiment, specifically what obser
What does the term "endpoint" mean in this experiment, specifically what observable changes, if any, occur and what are the chemical relationships at the endpoint for the followin…
What does the term \"immiscible\" mean? A. insoluble B. soluble C. flammable D.
What does the term "immiscible" mean? A. insoluble B. soluble C. flammable D. vaporizable What is the process of adding brine to a two-phase mixture called? A. extraction B. salti…
What does the term amphoteric mean? Which Brønsted-Lowry acid is not considered
What does the term amphoteric mean? Which Brønsted-Lowry acid is not considered to be a strong acid in water? D) HCl Which of the following acids is the STRONGEST? The acid is fol…
What does the term volatile mean? If the instructor tells you that a chemical is
What does the term volatile mean? If the instructor tells you that a chemical is volatile and harmful, where is the best place to work with it? Why? Should excess chemicals that y…
What does the term volatile mean? If the instructor tells you that a chemical is
What does the term volatile mean? If the instructor tells you that a chemical is volatile and harmful, where is the best place to work with it? Why? Should excess chemicals that y…
What does the term “genetically modified” mean, in terms of crop plants? An iden
What does the term “genetically modified” mean, in terms of crop plants? An identified gene from one plant is inserted into another. One gene in a plant is changed, and then the p…
What does this pseudocode do? a. Describe it in general (use one sentence only)
What does this pseudocode do? a. Describe it in general (use one sentence only) b. Describe it step-by-step for each line (just write next to it line by line) c. Convert this pseu…
What each test reveals about an unknown halide ion? Suggest another test which w
What each test reveals about an unknown halide ion? Suggest another test which would confirm that identity. 1.Addition of Cl2 and CH2Cl2 to an aqueous solution of an unknown halid…
What each test reveals about an unknown halide ion? Suggest another test which w
What each test reveals about an unknown halide ion? Suggest another test which would confirm that identity. 1.Addition of Cl2 and CH2Cl2 to an aqueous solution of an unknown halid…
What effect does a reduction in atmospheric pressure have on the boiling point o
What effect does a reduction in atmospheric pressure have on the boiling point of a liquid? Why is it dangerous to heat a liquid in an apparatus that is not vented to the atmosphe…
What effect does a) increasing the total pressure and b) increasing the temperat
What effect does a) increasing the total pressure and b) increasing the temperature have on the equilibrium H2(g)+ CO2(g) H2O(g) + CO(g),Ho= 41.2 kJ/mol. Can you please explain wh…
What effect does a. Increasing the total pressure and b. Increasing the temperat
What effect does a. Increasing the total pressure and b. Increasing the temperature have on the equilibrium H2+CO2 5. What effect does a) increasing the total pressure and b) incr…
What effect does an increase in pressure have on each of the following systems a
What effect does an increase in pressure have on each of the following systems at equilibrium? The temperature is kept constant and. in each cash, the reactants are in a cylinder …
What effect does including another open-source utility in your source repository
What effect does including another open-source utility in your source repository have upon your code if they use different licenses? I tend to use more permissive licenses such as…
What effect does recrystallization expected to have on the melting point of your
What effect does recrystallization expected to have on the melting point of your product? Briefly explain why. I know that recrystillzation is a method to purify a desired product…
What effect does temperature have on the rate of this reaction at differing temp
What effect does temperature have on the rate of this reaction at differing temperatures? Possible Rate Law for this reaction? To find total overall rate of reaction do we add the…
What effect does the presence of dissolved sodium fluoride have on the dissociat
What effect does the presence of dissolved sodium fluoride have on the dissociation equilibrium of hydrofluoric acid? (select all three that apply)... The percent dissociation of …
What effect might each of the following have on the Earth\'s climate? (Select al
What effect might each of the following have on the Earth's climate? (Select all that apply.) (a) CO2 particulate mater and gaseous chemical reactions in the stratosphere decreasi…
What effect will adding 50.0 mL of 1.0 M NaCl have on 100.0 mL of a saturated so
What effect will adding 50.0 mL of 1.0 M NaCl have on 100.0 mL of a saturated solution of AgCl (Ksp = 1.8 x 10-10)? no effect The correct answer is BUT WHY!!??? Question 23 of 25 …
What effect will decreasing the volume have the reaction? A) The reaction will s
What effect will decreasing the volume have the reaction? A) The reaction will shift to the right B) The reaction will shift to the left C) The reaction will not change The reacti…
What effect would adding sodium benzoate (NaC,Hs02) have on the following reacti
What effect would adding sodium benzoate (NaC,Hs02) have on the following reaction? ??,H502 (aq) + H2O (?) GH502. (aq) + H3O+ (aq) Which direction would the equilibrium shift? Dra…
What effect would each of the following have on a sample\'sobserved melting-poin
What effect would each of the following have on a sample'sobserved melting-point range ? a.use of a thick-walled melthing point tube b.rapid heating c.use of so much sample that t…
What effect would each of the following have on the calculated molar mass of an
What effect would each of the following have on the calculated molar mass of an unknown? would the calculated value be higher than the true value ?lower? Same? Explaain 1- Some of…
What effect would each of the following have on the calculated molar mass of an
What effect would each of the following have on the calculated molar mass of an unknown? would the calculated value be higher than the true value ?lower? Same? Explaain 1- Some of…
What effect would each of the following have on the observed melting-point range
What effect would each of the following have on the observed melting-point range of a sample? filling the melting-point capillary two-thirds full not packing the sample lightly in…
What effect would the addition of a catalyst to the reactants have on the values
What effect would the addition of a catalyst to the reactants have on the values of the half-life, ths rate constant, k, and change in enthalpy,AH, for a first order reaction? 31.…
What effect would the addition of a catalyst to the reactants have on the values
What effect would the addition of a catalyst to the reactants have on the values of the half-life, ths rate constant, k, and change in enthalpy,AH, for a first order reaction? 31.…
What effect would the following changes in concentration of reactants have on th
What effect would the following changes in concentration of reactants have on the rate of reaction? Do not discuss the effect these changes would have on the yield of product. Hin…
What effect would the following errors have on the calculated value of Ka? Choos
What effect would the following errors have on the calculated value of Ka? Choose whether the calculated value would be too high, too low, or if there is no effect. Explain your A…
What effect would you expect a spectroscope with a diffraction grating of 600 li
What effect would you expect a spectroscope with a diffraction grating of 600 lines mm to have on sharpness and resolution in your spectrum What effect would you expect a spectros…
What element forms a 3+ cation whose configuration ends in 4d^6? The answer is r
What element forms a 3+ cation whose configuration ends in 4d^6? The answer is rhodium but how? Isn't the 4d^6 in period 4?such as iron? I'm missing something, obviously. Very Con…
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