Chemistry concepts and calculations

What is the final temperature based on the calorimetric run? Cannot seem to figu

What is the final temperature based on the calorimetric run? Cannot seem to figure this question out based on the table or the excel graph I created. Note: the answer is not 33.0 …

What is the final temperature, in °C, in a squeezed cold pack that contains 34.2

What is the final temperature, in °C, in a squeezed cold pack that contains 34.2 g of NH4NO3 dissolved in 131 g of water? (Assu me that the solution has the same specific heat as …

What is the final volume of 620. mL of neon gas at 226°C if the gas is cooled to

What is the final volume of 620. mL of neon gas at 226°C if the gas is cooled to 75.5°C? Assume the pressure and the amount of gas are held constant 1 7528865 2 escription Assignm…

What is the final “Theoretical Final Temperature? (a) Mass of the Calorimeter (t

What is the final “Theoretical Final Temperature? (a) Mass of the Calorimeter (two empty cups) in g: 3.6 g (b) Mass of the cold water and the calorimeter in g: 70.30 g (c) Calcula…

What is the first law of Thermodynamics? When gasoline burns in a car engine, th

What is the first law of Thermodynamics? When gasoline burns in a car engine, the heat released causes the products CO_2 and H_2O to expand, which pushes the pistons outward. Exce…

What is the first step in the mechanism of an EAS reaction? The formation of a s

What is the first step in the mechanism of an EAS reaction? The formation of a strong electrophile. Loss of a proton from the arenium ion. The attenuation of the electrophilicity …

What is the first, second, and third (final) step in the mechanism of reaction o

What is the first, second, and third (final) step in the mechanism of reaction of ethanol with acetic acid? 1. ? 2. ? 3. ? Options: A. Creation of an intermediate where several at…

What is the flow rate of air in cfm in a rectangular duct with dimensions 1 ft x

What is the flow rate of air in cfm in a rectangular duct with dimensions 1 ft x 3 ft, with a flow velocity of 35 ft/sec? What is the mass flow rate of air in the above duct, at 1…

What is the following for the Molecule: N2O4 Molecular geometry (lst Nitrogen) I

What is the following for the Molecule:   N2O4 Molecular geometry (lst Nitrogen) Ideal bond angles (lst Nitrogen) Molecular geometry (2nd Nitrogen) Ideal bond angles (2nd Nitrogen…

What is the following number to four significant figures in standard exponential

What is the following number to four significant figures in standard exponential notation: 102.53070 What is the following number to four significant figures in standard exponenti…

What is the formal charge on nitrogen in NH_4? a. 0 b. 1 c. 2 d. 3 e. 4 Which wo

What is the formal charge on nitrogen in NH_4? a. 0 b. 1 c. 2 d. 3 e. 4 Which would be expected to be the most electronegative? a. Cl b. Se c. Bi d. Cs The electronegativity diffe…

What is the formal definition of functional group given in this video lesson? a

What is the formal definition of functional group given in this video lesson? a group of atoms that attracts to similar groups a combination of atoms that behaves as a single unit…

What is the formula foe sodium bromide? SBr NaBr Na_2Br NaBrO NaBr_2 Active meta

What is the formula foe sodium bromide? SBr NaBr Na_2Br NaBrO NaBr_2 Active metals often form a protective oxide surface film that prevents further reaction of the metal with oxyg…

What is the formula for copper(II) sulfide ? What is the formula for Iron (II) b

What is the formula for copper(II) sulfide ? What is the formula for Iron (II) bromide ? What is formula for Iron (III) fluoride ? What is the formula Nil_2 ? What is the name of …

What is the formula of sodium hypochlorite? NaClO_4 NaClO_2 NaClO NaClO_3 what i

What is the formula of sodium hypochlorite? NaClO_4 NaClO_2 NaClO NaClO_3 what is the frequency of radiation with a wavelength of 440 nm? 4.95 times 1-^-12 s^-1 1.51 times 10^-27 …

What is the formula of the compound formed by magnesium and iodine? A) MgI B) Mg

What is the formula of the compound formed by magnesium and iodine? A) MgI B) MgI2 C) MgI3 D) Mg2I 19. What is the formula of the compound formed between the ammonium ion and the …

What is the formula of the compound formed by magnesium and iodine? A) MgI B) Mg

What is the formula of the compound formed by magnesium and iodine? A) MgI B) MgI2 C) MgI3 D) Mg2I 19. What is the formula of the compound formed between the ammonium ion and the …

What is the formula of the conjugate acids of these bases HC0_3^- CN^- H_20 C_2H

What is the formula of the conjugate acids of these bases HC0_3^- CN^- H_20 C_2H_30_2^- Make a table and fill it in. The table is found on p. 615 # 19. How many grams of ZnS0_4 wi…

What is the formula of the ionic compound formed from the ions Na^+ and Se^2-? N

What is the formula of the ionic compound formed from the ions Na^+ and Se^2-? Na_2Se_3 Na_3Se NaSe NaSe_2 Na_2Se What force holds ions together in an ionic bond? covalent bonding…

What is the formula weight of NaNO_3? Calculate the molarity of a solution produ

What is the formula weight of NaNO_3? Calculate the molarity of a solution produced by dissolving 135.5 g of NaNO_3 in a 500 mL volumetric flask? You mix 6.0 mL if 0.50 M Na_2SO_4…

What is the fraction of association for the fallowing potassium propionate solut

What is the fraction of association for the fallowing potassium propionate solutions? Ignore activities. The Ja or propionate acid is 1.34x10^-5 Please show all work so I can unde…

What is the freezing point (in C) of each of the solutions below? For water, K f

What is the freezing point (in C) of each of the solutions below? For water, Kf = 1.86(C kg)/mol. The vapor pressure of water at 45.0C is 71.93mm Hg. Part A A solution of 14.5 g o…

What is the freezing point (in C) of each of the solutions below? For water, K f

What is the freezing point (in C) of each of the solutions below? For water, Kf = 1.86(C kg)/mol. The vapor pressure of water at 45.0C is 71.93mm Hg. Part A A solution of 14.5 g o…

What is the freezing point of a 0.20 m solution of glucose. C_6H_12O_6, in water

What is the freezing point of a 0.20 m solution of glucose. C_6H_12O_6, in water? (K_f for water is 1.858 degree C/m.) 0.37 degree C 0.19 degree C -0.19 degree C -0.37 degree C -0…

What is the freezing point of a 0.27 m solution of glucose, C_6 H_12 O_6 in wate

What is the freezing point of a 0.27 m solution of glucose, C_6 H_12 O_6 in water? (K_fp for water is 1.858 degree C/m.) What is the freezing point of a solution containing 2.80 g…

What is the freezing point of a 0.28 m solution of glucose, C6H12O6, in water? (

What is the freezing point of a 0.28 m solution of glucose, C6H12O6, in water? (Kf for water is 1.858°C/m.) A) 0.26°C B) –0.52°C C) –1.04°C D) –0.26°C E) 0.52°C For the reaction I…

What is the freezing point of a solution of glucose, a nonelectrolyte, that cont

What is the freezing point of a solution of glucose, a nonelectrolyte, that contains 40.0 g of C6H12O6 dissolved in 425 g of water? Use molar masses with at least as many signific…

What is the freezing point of an aqueous 2.08 m NaCl solution? (K _fp for water

What is the freezing point of an aqueous 2.08 m NaCl solution? (K _fp for water is 1.858 degree C/m) What is the freezing point of a 0.27 m solution of glucose, C _6H _12O _6. in …

What is the freezing point of automobile radiator fluid prepared by mixing equal

What is the freezing point of automobile radiator fluid prepared by mixing equal volumes of ethylene glycol and water at a temperature where the density of ethylene glycol is 1.11…

What is the frequency of a radiation whose wavelength of 5.0 times 10-5 m? 12 ti

What is the frequency of a radiation whose wavelength of 5.0 times 10-5 m? 12 times 10-12 s-1 4 times 10-12 s-1 6 times 10-12 s-1 3 times 10-12 s-1 None of the above What are the …

What is the frequency of gamma ray radiation that has a wavelength of 11.4 pm? 3

What is the frequency of gamma ray radiation that has a wavelength of 11.4 pm? 3.80 times 10^-20 s^-1 1.74 times 10^-14 s^-1 2.63 times 10^7 s^-1 3.42 times 10^9 s^-1 2.63 times 1…

What is the frequency of radiation whose wavelength is 5.2×10 5 m ? Express your

What is the frequency of radiation whose wavelength is 5.2×105 m ? Express your answer using two significant figures. SubmitMy AnswersGive Up Part B What is the wavelength of radi…

What is the frequency, in s1, of the light emitted when the electron in a hydrog

What is the frequency, in s1, of the light emitted when the electron in a hydrogen atom drops from the energy level ni = 12 to nf = 5? Calculate the de Broglie wavelength, in nano…

What is the function of potassium carbonate in this reaction? (Williamson ether

What is the function of potassium carbonate in this reaction? (Williamson ether synthesis) -None of the answers shown are correct -K2CO3 is used to neutralize excess NaOH generate…

What is the function of the IF statement in the selection control structure? Wha

What is the function of the IF statement in the selection control structure? What is the function of the ELSE statement in the selection control structure? What is the function of…

What is the function of the mobile phase for developing a chromatogram? What is

What is the function of the mobile phase for developing a chromatogram? What is the chemical composition of the mobile phase in this experiment? what is the function of the mobile…

What is the function of the monochromator in a single-beam uv/vis absorption spe

What is the function of the monochromator in a single-beam uv/vis absorption spectrophotometer? It emits electromagnetic radiation in the visible and ultraviolet regions of the sp…

What is the function served by each ingredient in the fractionation buffer? You

What is the function served by each ingredient in the fractionation buffer? You have just accomplished the feat of isolating nuclei from the ova of a "golden goose" The ideal cond…

What is the function served by each ingredient in the fractionation buffer? You

What is the function served by each ingredient in the fractionation buffer? You have just accomplished the feat of isolating nuclei from the ova of a "golden goose" The ideal cond…

What is the fundamental reaction of RNA synthesis? (a) formation of correct base

What is the fundamental reaction of RNA synthesis? (a) formation of correct bases especially uracil (b) formation of ribosyl linkages (c) formation of a phosphodiester bond (d) hy…

What is the general rule for the ratio protons to neutrons for stable isotopes h

What is the general rule for the ratio protons to neutrons for stable isotopes having an atomic number less than 20? Between 20 and 40? Between 40 and 80? Above 80? The following …

What is the general term for a substance dissolved in water? Acid salt aqueous s

What is the general term for a substance dissolved in water? Acid salt aqueous salt aqueous solution salt solution The compound CH_3CH_2NH_2 is classified as a primary amine secon…

What is the general term for the proteins involved in recognition of specific ol

What is the general term for the proteins involved in recognition of specific oligosaccharide structures? Oligosaccharide residues on cell surfaces provide recognition sites for a…

What is the glyemic effect How fast the glucose level gets bac to normalcy How s

What is the glyemic effect How fast the glucose level gets bac to normalcy How slow rice and cassaua are digested How fast ribose get backs to normalcy How fast glycogen is digest…

What is the ground state electron configuration of a neutral atom of iron? What

What is the ground state electron configuration of a neutral atom of iron? What is the ground state electron configuration of the fluoride ion F^-? Which element has the following…

What is the ground state electron configuration of carbon? 1s^2 2s^22p_x^1 1s^2

What is the ground state electron configuration of carbon? 1s^2 2s^22p_x^1 1s^2 2s^2 p_x^2 1s^2 2s^2 2p_x^12py^1 1s^2 2s^2 2p_x^2 2p_y^1 What is the letter designation given to du…

What is the ground state electron configuration of fluorine? 1s^2 2s^2 2p^5 1s^2

What is the ground state electron configuration of fluorine? 1s^2 2s^2 2p^5 1s^2 2s^2 2p^7 1s^2 2s^2 2p^3 1s^2 2s^2 3s^5 none of these Which Orbital diagram for the ground state e…

What is the ground-state electron configuration of Mn? [Ar] 3d^s [Ar] 4s^13d^s [

What is the ground-state electron configuration of Mn? [Ar] 3d^s [Ar] 4s^13d^s [Ar] 4s^13d^s [Ar] 4s^24p^2 Of the following, which atom has the smallest atomic radius? Mg Cl Ca F …

What is the ground-state electron configuration of a neutral atom of nickel? Exp

What is the ground-state electron configuration of a neutral atom of nickel? Express your answer in condensed form, in order of increasing orbital energy. For example, (He} 2s^2 2…

What is the ground-state electron configuration ofa neutral atom of nickel? Expr

What is the ground-state electron configuration ofa neutral atom of nickel? Express your answer in condensed form, in order of increasing orbital energy. For example, [He] 28^2 2p…