Chemistry concepts and calculations
117302 questions • Page 1955 / 2347
What element has an electron arrangement of 3, 8, 8, 2? a. Chlorine B. Calcium c
What element has an electron arrangement of 3, 8, 8, 2? a. Chlorine B. Calcium c. Carbon d. Fluorine e. Manganese How many milligrams of a 1.0 g sample of strontium-85 will remain…
What element has the greatest change in energy between the second and third ioni
What element has the greatest change in energy between the second and third ionization energies? Sr,Cu,Te,Cl,As Which of the following statements is NOT true? The separation of a …
What element is being reduced in the following redox reaction? H_2O_2 (I) + ClO_
What element is being reduced in the following redox reaction? H_2O_2 (I) + ClO_2 (aq) rightarrow ClO^-_2 (aq) + O_2 (g) C N O H Which one of the following is a correct representa…
What element is being reduced in the following redox reaction? H_2O_2(l) + ClO_2
What element is being reduced in the following redox reaction? H_2O_2(l) + ClO_2(aq) + O_2 (g) C N O H Cl Which one of the following is a correct representation of a beta particle…
What element is represented by the electron configuration1s^2 2s^2 2p^5 3s^2 3p^
What element is represented by the electron configuration1s^2 2s^2 2p^5 3s^2 3p^2? What element is represented by the orbital diagram: Draw the orbital diagrams (box/line notation…
What element is undergoing oxidation (if any) in the following reaction This is
What element is undergoing oxidation (if any) in the following reaction This is not an oxidation-reduction reaction. O Zn This is not an oxidation-reduction reaction Ag N Aluminum…
What element they are: 1.My appearance at standard state is a silvery-white. My
What element they are: 1.My appearance at standard state is a silvery-white. My density when I melt is 1.46g/cm3. I burn purple, and react violently on contact with water. I see u…
What equation should I use to find the enzyme and substrate concentrations that
What equation should I use to find the enzyme and substrate concentrations that correspond with this graph of absorbance over time? Thank you for your time. [Enzyme] [Substrate] 1…
What evidence did you have that adding concentrated HC lot powdered magnesium wa
What evidence did you have that adding concentrated HC lot powdered magnesium was a chemical and not a physical reaction? Five cm^3 of liquid A has a mass of 4.0g. Five cm^3 of li…
What evidence that you have a carboxylic acid in your product is observed in you
What evidence that you have a carboxylic acid in your product is observed in your IR spectrum? Find at least two absorptions and list their frequencies and molecular motions. How …
What experimental factors are assumed to be constant in this experiment? DATA AN
What experimental factors are assumed to be constant in this experiment? DATA AND CALCULATIONS Volume (mL) Pressure (kPa) Constant, k (P/V or P.V) mu ollox 190.0 K mt 90 K 19.do n…
What factor is most important in determining the chemistry of an organic molecul
What factor is most important in determining the chemistry of an organic molecule? Question 21 options: the functional groups the number of carbon-carbon bonds the number of carbo…
What factor, important in determining atom electronegativity, determines that th
What factor, important in determining atom electronegativity, determines that the electronegativity of two different elements are never equal (as several values from Pauling’s tab…
What factors are required for a molecule to be polar? (Choose all that apply) Th
What factors are required for a molecule to be polar? (Choose all that apply) The presence of polar covalent bonds are required. Polar bonds must be symetrically arranged around t…
What factors cause changes between the liquid and gas state? Check all that appl
What factors cause changes between the liquid and gas state? Check all that apply. What factors cause changes between the solid and liquid state? Check all that apply. A solid can…
What factors determine the solubility of alt in water? Explain. A student is eva
What factors determine the solubility of alt in water? Explain. A student is evaluating the solubility potassium chlorate (KCIO_3;MW =122.5 g/mol) at various temperatures. She dis…
What factors must be considered when choosing a solvent for an extraction consis
What factors must be considered when choosing a solvent for an extraction consisting of an aqueous phase and an organic phase? Identify the physical property that determines if th…
What factors must you consider to determine the sign of ? S for the reaction 2N
What factors must you consider to determine the sign of ?S for the reaction 2N2O(g) ? 2N2(g) + O2(g) if it occurs at constant temperature? Select all that apply. the nu…
What feature would you expect to see in the 1H NMR spectrum of B after subjectin
What feature would you expect to see in the 1H NMR spectrum of B after subjecting A to the following reaction? a) The signal for the methyl protons would integrate for only 2 hydr…
What feedback You are the TA for this experiment, and the following hypothesis i
What feedback You are the TA for this experiment, and the following hypothesis is handed in to you. would you give to the student in order to help them write a better hypothesis i…
What forces hold ionic compounds together? b) Ionic compounds are made up of pos
What forces hold ionic compounds together? b) Ionic compounds are made up of positively and negatively charged particle. What is generally true about oppositely7 charged particles…
What form of the complex ion, Co(H_2O)_6^2+ (aq) or CoCI_4^2- (aq), is predomina
What form of the complex ion, Co(H_2O)_6^2+ (aq) or CoCI_4^2- (aq), is predominate in: the 12 M HCI (aq) ____________ the diluted solution ____________ the heated solution _______…
What form of transport is electron transport chain -what happens to the carbons
What form of transport is electron transport chain -what happens to the carbons in the citric acid cycle -Define the reactions in the The citric acid cycle What is the fate of the…
What formula do I use and how do I solve this? Thanks so much! Silver nitrate, A
What formula do I use and how do I solve this? Thanks so much! Silver nitrate, AgNO3, can be used to test for the presence of chloride ions in solution, because it readily forms a…
What free software is currently most popular in amateur maker communities for de
What free software is currently most popular in amateur maker communities for designing 3D objects intended for manufacture using 3D printers or CNC milling machines? Something si…
What function does washing an ether layer with 5% sodium bicarbonate serve? Solu
What function does washing an ether layer with 5% sodium bicarbonate serve?
What function does washing an ether layer with 5% sodium bicarbonate serve? Solu
What function does washing an ether layer with 5% sodium bicarbonate serve?
What functional class(es) does the compound belong to? List only classes for whi
What functional class(es) does the compound belong to? List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly. Do not over-int…
What functional group (t) is are present in following compound? A) 2nd alcohol a
What functional group (t) is are present in following compound? A) 2nd alcohol and alkene B) alkene and 2nd alcohol C) alkyne and 2nd alcohol D) alkyne and 2nd alcohol E) alkyne a…
What functional group or groups might absorb the infrared radiation described? A
What functional group or groups might absorb the infrared radiation described? A susbstance displays a strong, broad band in its IR spectrum at about 3350 cm -1, boiling point of …
What functional group was produced in this reaction? Lab 3: Williamson Ether Syn
What functional group was produced in this reaction? Lab 3: Williamson Ether Synthesis of Ethyl n-Butyl Ether Adapted by R. Minard and Todd Garber (Penn State Univ.) from Practica…
What general effects would you expect the following changes to have on the rate
What general effects would you expect the following changes to have on the rate of an enzyme-catalyzed reaction for an enzyme that has its maximum activity at body temperature (ab…
What group of adolescents overall tends to have the most negative body image? Ca
What group of adolescents overall tends to have the most negative body image? Caucasian girls. African American girls. Boys of all races. Hispanic girls Question 2 In his psychoso…
What happened to general chemistry atoms first, second edition solutions by McMu
What happened to general chemistry atoms first, second edition solutions by McMurry, and Fay. On my pc it says no solutions are available and on my iPhone, it only contains the fi…
What happens if too much solvent is used to initially dissolve a solid during re
What happens if too much solvent is used to initially dissolve a solid during recrystallization? Why? How can you reduce The solubility of a nonpolar compound in a solvent such as…
What happens if water gets into the reaction that forms Phenylmagnesium bromide
What happens if water gets into the reaction that forms Phenylmagnesium bromide Biphenyl will form Benzene will form Benzoic acid will form Bromobenzene will form again The reacti…
What happens if we create a fake AP with linset on kali linux and we disconnect
What happens if we create a fake AP with linset on kali linux and we disconnect the target. He would then connect to our AP and when he wants to go to a site he will see a fake pa…
What happens if you treat a solution of acetanilide in diethyl ether with aqueou
What happens if you treat a solution of acetanilide in diethyl ether with aqueous NaOH solution. A) The acetanilide is protonated, which transfers it to the aqueous phase B) The a…
What happens if you treat a solution of acetanilide in diethyl ether with aqueou
What happens if you treat a solution of acetanilide in diethyl ether with aqueous NaOH solution. A) The acetanilide is protonated, which transfers it to the aqueous phase B) The a…
What happens to a reaction\'s rate when there are increasing amounts of reactant
What happens to a reaction's rate when there are increasing amounts of reactant added? Question 2 options: Chemical reaction rates continue to increase linearly, but enzyme cataly…
What happens to elemental metals when they react in a redox reaction? They typic
What happens to elemental metals when they react in a redox reaction? They typically lose electrons. They typically gain electrons. They neither gain nor lose electrons. There is …
What happens to isotopes that are unstable? What are the mechanisms by which uns
What happens to isotopes that are unstable? What are the mechanisms by which unstable isotopes may decay into stable isotopes? How may these natural processes be used by chemists …
What happens to isotopes that are unstable? What are the mechanisms by which uns
What happens to isotopes that are unstable? What are the mechanisms by which unstable isotopes may decay into stable isotopes? How may these natural processes be used by chemists …
What happens to the concentration of a pure solid when that solid is divided int
What happens to the concentration of a pure solid when that solid is divided into two unequal portions. A) Nothing the concentration of a pure solid is constant, therefore any amo…
What happens to the density of a pure solid when that solid is separated into tw
What happens to the density of a pure solid when that solid is separated into two unequal proportions? A) None of the other answers are applicable. B) The density of the larger am…
What happens to the following intermediate of aromatic electrophilic substitutio
What happens to the following intermediate of aromatic electrophilic substitution on next step of the reaction? It turns to the product of addition, because it loses aromaticity I…
What happens to the following properties of a pure solvent when a non-volatile s
What happens to the following properties of a pure solvent when a non-volatile solute is added? (write "increase" or "decrease" then explain why) i) Vapor pressure will because...…
What happens to the melting (freezing) temperature of a pure metal when it is mi
What happens to the melting (freezing) temperature of a pure metal when it is mixed with another metal? What region of the phase diagram consists entirely of a single liquid phase…
What happens to the packets that the exit node sends/receives from the desired w
What happens to the packets that the exit node sends/receives from the desired web server? Does each response packet get routed back through the Tor circuit (encrypting on the way…
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…
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