Chemistry concepts and calculations
117302 questions • Page 1956 / 2347
What happens to the storage and loss modulus of an epoxy as it cures through its
What happens to the storage and loss modulus of an epoxy as it cures through its gel point? The storage modulus stays above the loss modulus throughout The storage modulus is grea…
What happens to the temperature of a mixture of ice and liquid water as heat is
What happens to the temperature of a mixture of ice and liquid water as heat is applied at a constant rate? What happens to the temperature of a mixture of ice and liquid water as…
What happens to the temperature of a mixture of ice and liquid water as heat is
What happens to the temperature of a mixture of ice and liquid water as heat is applied at a constant rate? A- The temperature of the mixture increases as the ice melts, and then …
What happens whe you react methanol with chromic acid? I know that when you reac
What happens whe you react methanol with chromic acid? I know that when you react a secondary alcohol with chromicacid you get a ketone and when you react a primary alcohol withch…
What happens when a molecular absorbs a photon? What would happen afterwards? Ph
What happens when a molecular absorbs a photon? What would happen afterwards? Physical processes that can occur after a molecule absorbs an ultraviolet or visible photon. S_0 is t…
What highly unsaturated fatty acid is synthesized from the fatty acid linoleic a
What highly unsaturated fatty acid is synthesized from the fatty acid linoleic acid in the body? a. Stearic acid b. Linolenic acid c. Stearic acid d. Arachidonic acid e. Palmitole…
What hosting services exist that allows free API documentation hosting? Think Tr
What hosting services exist that allows free API documentation hosting? Think Travis for CI or Bintray for binaries, only for docs. I am looking for a service that can help automa…
What i s the mass number of an isotope? Will all isotopes of the same element ha
What is the mass number of an isotope? Will all isotopes of the same element have the same mass number ? Explain. 8. What two forces are involved in the creation of a nucleus? Des…
What if she wanted the halite and the calcite removed, leaving only the quartz?
What if she wanted the halite and the calcite removed, leaving only the quartz? How could you remove both the halite and the calcite but then recover the halite? Pyrite and chalco…
What if the equation for the equilibrium were: Fe^3+ (aq) + 2SCN^- (aq) rightlef
What if the equation for the equilibrium were: Fe^3+ (aq) + 2SCN^- (aq) rightleftharpoons Fe(SCN)_2 +(aq) How would the expression for the Ke be written? If the reaction in questi…
What if the second gas phase molecule in the collision can actually be a second
What if the second gas phase molecule in the collision can actually be a second molecule of A- and this collision has a noticeably different activation energy, so that the rate co…
What if the second gas phase molecule in the collision can actually be a second
What if the second gas phase molecule in the collision can actually be a second molecule of A and this collision has a noticeably different activation energy, so that the rate con…
What important information does the K, give? In this experiment, the weak acid (
What important information does the K, give? In this experiment, the weak acid (HA), is reacted with 0.100 M NaOH using a titration set-up. Write the chemical equation for the rea…
What impurity did you remove when you performed the hot filtration? A. Sugar B.
What impurity did you remove when you performed the hot filtration? A. Sugar B. Water Wood shavings D. Benzoic acid What impurity did you remove when you performed the vacuum filt…
What in the molar mass of a compound if 5.12 grams is dissolved in 25.0 grams of
What in the molar mass of a compound if 5.12 grams is dissolved in 25.0 grams of chloroform solvent to form a solution that has a boiling point of 67.54 degree C? The boiling poin…
What information do you have to keep about a user to be an OpenID consumer? I wa
What information do you have to keep about a user to be an OpenID consumer? I want to use OpenID to let users register and authenticate on my system. So while I'm at it I want to …
What information does the \"index of hydrogen deficiency\" provide from a mass s
What information does the "index of hydrogen deficiency" provide from a mass spectrum? a) It is an index used to calculate the number of hydrogen atoms on a compound before and af…
What information is conveyed by the endings -ide, -ate, and-ite in the name of a
What information is conveyed by the endings -ide, -ate, and-ite in the name of an anion? Match the words in the left column to the appropriate blanks in the sentences on the right…
What information is conveyed by the endings -ide, -ate, and-ite in the name of a
What information is conveyed by the endings -ide, -ate, and-ite in the name of an anion? Match the words in the left column to the appropriate blanks in the sentences on the right…
What instrument do you need to deliver A) 4.5mL +/- 0.15; B) 4.5mL +/- 0.02; C)
What instrument do you need to deliver A) 4.5mL +/- 0.15; B) 4.5mL +/- 0.02; C) 4.5mL +/- 0.07. I have the answers, however, the calculations need to be shown for how the answer w…
What intermolecular forces are present between atoms of helium (He)? A. Dispersi
What intermolecular forces are present between atoms of helium (He)? A. Dispersion Forces. B. Dipole-Dipole Force. C. Hydrogen Bonding. D. Dispersion Forces and Dipole-Dipole Forc…
What intermolecular forces are present in each of the substances? CH4,C3H8,CH3F,
What intermolecular forces are present in each of the substances? CH4,C3H8,CH3F,HF, C6H5OH (dispersion forces, dipole-dipole forces, or hydrogen bonding);A sample of ideal gas at …
What ions, atoms, or molecules are present after CH 3 CH 2 OH( l ) mixes with wa
What ions, atoms, or molecules are present after CH3CH2OH(l) mixes with water? Answer A. CH3CH2OH(aq) and H2O(l) B. 2C(aq), 6H(aq), an…
What ions, atoms, or molecules are present when the following substances are mix
What ions, atoms, or molecules are present when the following substances are mixed with water? Write a balanced equation to represent the process of dissolving each substance in w…
What ions, if any, do each of the following substances produce in aqueous soluti
What ions, if any, do each of the following substances produce in aqueous solution? Calcium nitrate, Ca(NO3)2 Ammonium phosphate , (NH4)3PO Methane, CH4 Copper (I) sulfate, Cu2SO …
What is (the value for Ksp for Ag2 CO3 in this solution? 3.4 x 10-8 6.8 x 10-8 1
What is (the value for Ksp for Ag2 CO3 in this solution? 3.4 x 10-8 6.8 x 10-8 1.7 times 10-8 4.4 times 10-12 8.8 x 10-12 The Ksp for BaCO3 (197.3 g/mol) is 5.1 x 10-9 How many gr…
What is / are some recommended ways to write JavaScript as to control behavior o
What is / are some recommended ways to write JavaScript as to control behavior of showing HTML on screen, while keeping well-maintainable code? Basically, I started to look for wa…
What is ? H ?rxn for the following chemical reaction? H2O(l)+CCl4(l)?COCl2(g)+2H
What is ?H?rxn for the following chemical reaction? H2O(l)+CCl4(l)?COCl2(g)+2HCl(g) You can use the following table of standard heats of formation (?H?f) to calculate the enthalpy…
What is ?E for the transition of an electron from n = 7 to n = 4 in a Bohr hydro
What is ?E for the transition of an electron from n = 7 to n = 4 in a Bohr hydrogen atom? What is the frequency, v, of the spectral line produced? Enter your answer with 4 signifi…
What is ?E for the transition of an electron from n = 7 to n = 4 in a Bohr hydro
What is ?E for the transition of an electron from n = 7 to n = 4 in a Bohr hydrogen atom? What is the frequency, v, of the spectral line produced? Enter your answer with 4 signifi…
What is Answers? 1- which one is not digtal encoding? A- Dipolar-AMI 0 Ampltude
What is Answers? 1- which one is not digtal encoding? A- Dipolar-AMI 0 Ampltude shit Keyin C-NRZ- D- Manchester E- Pseudotemary 2- Which one is not related to error control procas…
What is Attribute Based Encryption? has a nice explanation what both forms (Ciph
What is Attribute Based Encryption? has a nice explanation what both forms (Ciphertext-policy Attribute-based Encryption and Key-policy Attribute-based Encryption) are. My questio…
What is DELTAsdegree at 298 K for the following reaction? CH_4(g) + N_2(g) right
What is DELTAsdegree at 298 K for the following reaction? CH_4(g) + N_2(g) rightarrow HCN(g) + NH_3(g); DELTAhdegree= 164.1 kJ; DELTAGdegree = 159.1 kJ at 298 K 2.0 J/K 550 J/K 11…
What is Delta S degree for the following reaction at 25 degree C? C_2H_4(g) + 3O
What is Delta S degree for the following reaction at 25 degree C? C_2H_4(g) + 3O_2(g) rightarrow 2CO_2(g) + 2H_2O(g) -21 J/K-mol -28 J/K-mol 0 J/K-mol 28 J/K-mol 21 J/K-mol Consid…
What is Green Chemistry and how did it begin? According to the EPA what is the p
What is Green Chemistry and how did it begin? According to the EPA what is the purpose of green chemistry? In your own words, give your understanding of the purpose of Green Chemi…
What is Green Chemistry and how did it begin? According to the EPA what is the p
What is Green Chemistry and how did it begin? According to the EPA what is the purpose of green chemistry? In your own words, give your understanding of the purpose of Green Chemi…
What is IR? What does it measure? Which bonds are typically IR active? Which are
What is IR? What does it measure? Which bonds are typically IR active? Which are not? Which absorb strongly? Which are weak? What does it tell you about a compound? Can it be used…
What is It about most sedimentary rocks that makes them unsuitable for radioacti
What is It about most sedimentary rocks that makes them unsuitable for radioactive dating? Why do we use Ar^40 in preference to Co^kj in K^a0 dating? what advantages does it have?…
What is Le Chatelier\'s principle? How would increasing the H_2(g) concentration
What is Le Chatelier's principle? How would increasing the H_2(g) concentration affect the following equilibrium? N_2(g) + 3H_2(0) 2NH_3(g) What does the double arrow appearing in…
What is NOT a safety concern in the extraction of active compounds from the Exce
What is NOT a safety concern in the extraction of active compounds from the Excedrin tablets experiment? A leaking separatory funnel. Recording the weight of recrystallized aspiri…
What is O(n) of the method: removeDuplicates? Assume the major operation is the
What is O(n) of the method: removeDuplicates? Assume the major operation is the comparison operation. private static int[] removeDuplicates(int[] s){ int end = s.length; for…
What is a 0.05% w/v solution in micrograms/ml? The prescription is for a sugar-f
What is a 0.05% w/v solution in micrograms/ml? The prescription is for a sugar-free oral solution of furosemide (Frusol ). What is the concentration of the stock in mg/ml if a 5 m…
What is a CS-related problem that one country faces, that another country has th
What is a CS-related problem that one country faces, that another country has the solution to? Come up with 3 potential topics. Basically meaning, what is a problem that Country A…
What is a CS-related problem that one country faces, that another country has th
What is a CS-related problem that one country faces, that another country has the solution to (which may have been implemented in the form of policies to tackle the issue)? Come u…
What is a \"quartemary amine functional group\" that is bonded to anion-exchange
What is a "quartemary amine functional group" that is bonded to anion-exchange resins? these are called -strong-base' anion-exchange resins. What is done differently for "weak-bas…
What is a collection? What is a data type? What is an abstract data type? What i
What is a collection? What is a data type? What is an abstract data type? What is a data structure? What is abstraction and what advantage does it provide? Why is a class an excel…
What is a collection? What is a data type? What is an abstract data type? What i
What is a collection? What is a data type? What is an abstract data type? What is a data structure? What is abstraction and what advantage does it provide? Why is a class an excel…
What is a collection? What is a data type? What is an abstract data type? What i
What is a collection? What is a data type? What is an abstract data type? What is a data structure? What is abstraction and what advantage does it provide? Why is a class an excel…
What is a flocculant? What is the purpose of adding aluminum sulfate and calcium
What is a flocculant? What is the purpose of adding aluminum sulfate and calcium hydroxide in steps 2 and 3 of Experiment #5 (Fun with Water). (Be chemically specific. What does a…
What is a good design for a simple web site with mostly static pages and a blog?
What is a good design for a simple web site with mostly static pages and a blog? I am helping a friend build this for their small business. We are looking for a simple approach th…
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