Chemistry concepts and calculations

1)Which of the following is not a molecule that would form part of the head grou

1)Which of the following is not a molecule that would form part of the head group for a glycerophospholipid? Choline Ethanolamine Sphingosine Inositol 2)Imagine that you have vesi…

1)Which of the following is true? a)As a reaction at constant temperature and pr

1)Which of the following is true? a)As a reaction at constant temperature and pressure goes to equilibrium, |?G| decreases. b)The standard state for solutes is the pure solute at …

1)Which of the following is/are the possible methods of deciding which atom in t

1)Which of the following is/are the possible methods of deciding which atom in the CN- ion has more negative charge? Both methods mentioned. Determine which atom is more electrone…

1)Which of the following processes involves an increase in entropy? a. the combi

1)Which of the following processes involves an increase in entropy? a. the combination of H2(g) and N2(g) gas to form NH3 B. the combination of Na and Cl to form NaCl in water C. …

1)Which of the following statements is true regarding aluminum / aluminum alloys

1)Which of the following statements is true regarding aluminum / aluminum alloys ? Aluminum alloys are generally considered to be mechanically inferior compared to pure aluminum i…

1)Which of the following statements is true? a)catalysts help to cancel intermed

1)Which of the following statements is true? a)catalysts help to cancel intermediates from the reaction mechanism b)Catalysts lower the activation energy by altering the rate dete…

1)Which of the following will bubble in the presence of 1.0 M hydrochloric acid

1)Which of the following will bubble in the presence of 1.0 M hydrochloric acid and have a significant mass loss when heated in a crucible? NiCl2, K2CO3, LiNO3, NaBr, NaCl, AgNO3,…

1)Which of the reactions involving metal ions (equations 1A - 6B)(there is no 5A

1)Which of the reactions involving metal ions (equations 1A - 6B)(there is no 5A) represent redox reaction(s)? Write down the entire equation(s) AS WELL AS their corresponding bal…

1)Which of these amino acids is most likely to be found in the center of a membr

1)Which of these amino acids is most likely to be found in the center of a membrane bilayer in a transmembrane protein? Lysine Histidine Serine Tyrosine Valine 2)Consider the foll…

1)Which reagent(s) would you use to carry out the following transformation? isop

1)Which reagent(s) would you use to carry out the following transformation? isopropylbenzene 2- and 4-chloroisopropylbenzene a) C2H5Cl, AlCl3 b) SOCl2 c) Cl2, heat and light d) Cl…

1)Which sample contains the largest number of ions? Answer 1.5 mol SnCl 2 1.0 mo

1)Which sample contains thelargestnumber of ions? Answer 1.5 mol SnCl2 1.0 mol NaNO3 1.0 mol (NH4)3PO4 1.0 mol Fe(NO3)2 1.5 mol AgNO3 2)Which sample contains the smallest number o…

1)Which sample contains the largest number of ions? Answer 1.5 mol SnCl 2 1.0 mo

1)Which sample contains thelargestnumber of ions? Answer 1.5 mol SnCl2 1.0 mol NaNO3 1.0 mol (NH4)3PO4 1.0 mol Fe(NO3)2 1.5 mol AgNO3 2)Which sample contains the smallest number o…

1)Which statement is true about cellulose A)Cellulose has beta 1 --> 3 glycosidi

1)Which statement is true about cellulose A)Cellulose has beta 1 --> 3 glycosidic bonds and is higly H-bonded to form a sheet structure B)Cellulose has the same type glycosidic…

1)Which statement is true about cellulose A)Cellulose has beta 1 --> 3 glycosidi

1)Which statement is true about cellulose A)Cellulose has beta 1 --> 3 glycosidic bonds and is higly H-bonded to form a sheet structure B)Cellulose has the same type glycosidic…

1)Why is this answer C? Citric acid is a triprotic acid with Ka1=7.4×104 . Which

1)Why is this answer C? Citric acid is a triprotic acid with Ka1=7.4×104 . Which of the following is the most likely value for Ka2? A. Very large B. 7.4×104 C. 1.7×105 D. 6.0×102 …

1)Write a balanced equation for the decomposition reaction described, using the

1)Write a balanced equation for the decomposition reaction described, using the smallest possible integer coefficients. When ammonium nitrate decomposes, dinitrogen monoxide and w…

1)Write a balanced equation for the decomposition reaction described, using the

1)Write a balanced equation for the decomposition reaction described, using the smallest possible integer coefficients. When ammonium nitrate decomposes, dinitrogen monoxide and w…

1)Write a balanced equation for the single-replacement oxidation-reduction react

1)Write a balanced equation for the single-replacement oxidation-reduction reaction described, using the smallest possible integer coefficients. The reaction that takes place when…

1)Write a balanced equation for the single-replacement oxidation-reduction react

1)Write a balanced equation for the single-replacement oxidation-reduction reaction described, using the smallest possible integer coefficients. The reaction that takes place when…

1)Write a balanced equation for the single-replacement oxidation-reduction react

1)Write a balanced equation for the single-replacement oxidation-reduction reaction described, using the smallest possible integer coefficients. The reaction that takes place when…

1)Write a balanced equation for the single-replacement oxidation-reduction react

1)Write a balanced equation for the single-replacement oxidation-reduction reaction described, using the smallest possible integer coefficients. The reaction that takes place when…

1)Write an equation for the combustion of ethanol in the form ?Hcomb = ?n?Hf (pr

1)Write an equation for the combustion of ethanol in the form ?Hcomb = ?n?Hf (products) - ? m?Hf (reactants). N = .0169 moles. m= .7780 g. ?Hcomb = -1371.413 kJ/mol 2) Calculate t…

1)Write an equation for the combustion of ethanol in the form ?Hcomb = ?n?Hf (pr

1)Write an equation for the combustion of ethanol in the form ?Hcomb = ?n?Hf (products) - ? m?Hf (reactants). N = .0169 moles. m= .7780 g. ?Hcomb = -1371.413 kJ/mol 2) Calculate t…

1)Write down Mass balance and charge balance equations for 0.100 mol L-1 NaC2O2O

1)Write down Mass balance and charge balance equations for 0.100 mol L-1 NaC2O2O4(aq)

1)Write down Mass balance and charge balance equations for 0.100 mol L-1 NaC2O2O

1)Write down Mass balance and charge balance equations for 0.100 mol L-1 NaC2O2O4(aq)

1)Write out a reaction associated with the enthalpy of formation of aqueous ammo

1)Write out a reaction associated with the enthalpy of formation of aqueous ammonia. you must include states for all the reactants and products. 2)Write out the reaction associate…

1)a nonvolatile organic compound Z was used to make up a solution. Solution cont

1)a nonvolatile organic compound Z was used to make up a solution. Solution contains 1.00g of Z dissolved in 100g of water and has vapor pressure of 754.5 mmHg at the normal boili…

1)at 227 degrees celcius, carbon monoxide gas reacts with hydrogen gas to form o

1)at 227 degrees celcius, carbon monoxide gas reacts with hydrogen gas to form one mole of methanol, CH3OH (g). At equilibrium, the partial pressures of the gases are Pco=0.295 at…

1)calculate the change in ph when 4 ml of .1 m HCl is added to 100 ml of a buffe

1)calculate the change in ph when 4 ml of .1 m HCl is added to 100 ml of a buffer solution that is .1 m in NH3 and .1 m in NH4Cl 2 calculate the change in ph when 4ml of .1 m NaOH…

1)how many grams of oxygen gas are required for the complete reaction of 22.7 gr

1)how many grams of oxygen gas are required for the complete reaction of 22.7 grams ofcarbon monoxide? carbon monoxide (g) + oxygen (g) carbon dioxide (g) 2) According to the foll…

1)if the level of water in the eudiometer is above that in the cylinder, is the

1)if the level of water in the eudiometer is above that in the cylinder, is the pressure in the eudiometer higher or lower than the atmospheric pressure? 2)why do we put the magne…

1)if the level of water in the eudiometer is above that in the cylinder, is the

1)if the level of water in the eudiometer is above that in the cylinder, is the pressure in the eudiometer higher or lower than the atmospheric pressure? 2)why do we put the magne…

1)sample of co2 gas at 110 c has volume of 350 ml at 760. Mm Hg. How many miles

1)sample of co2 gas at 110 c has volume of 350 ml at 760. Mm Hg. How many miles of Co2 are present? 2) the volume of a sample of nitrogen is 6.00 L at 380 k and 740 mmhg. What vol…

1)silver nitrate is added to a solution of 1×10^-2M sodium acetate (Ksp AgC2H302

1)silver nitrate is added to a solution of 1×10^-2M sodium acetate (Ksp AgC2H302=1.9×10^-3) A)at what concentration of AG+ does a precipitate start to form? B)what is the concentr…

1)the molecular formula for dimethylsulfoxide is C2H6SO. In 2.5 moles of dimethy

1)the molecular formula for dimethylsulfoxide is C2H6SO. In 2.5 moles of dimethylsulfoxide, there are: ----moles of C --- moles of H ---- moles of S ---- moles of O 2) The reactio…

1)what is the balanced chemical equation for the complete neutralization of 1 mo

1)what is the balanced chemical equation for the complete neutralization of 1 mole of the active ingredient in "Gaviscon" with acid H+ ions? 2)what gas is generated when "Alka sel…

1)when completing the procedure of the density experiment , the situations descr

1)when completing the procedure of the density experiment , the situations described below occur, in each case, tell whether the situation described would cause the experimental v…

1+7018) 5) Wh A) sulfur Answer ( ich of the following elements is found as a mon

1+7018) 5) Wh A) sulfur Answer ( ich of the following elements is found as a monat species in its most stable form? E) phosphorus B) oxygen C) hydrogen D)argon ich of the followin…

1, 2 and 3 Student Name: Allvssa waler Instructor Name POST-LAB (EXP #10): 1. In

1, 2 and 3 Student Name: Allvssa waler Instructor Name POST-LAB (EXP #10): 1. In experiment 9, page 7 showed the atomic spectra of calcium and sodium. These spectra help explain t…

1, 2, 3 Thank you!!! EXP #10: PRE-LAB EXERCISE 1. Missy Mae is given an unknown

1, 2, 3 Thank you!!! EXP #10: PRE-LAB EXERCISE 1. Missy Mae is given an unknown white ionic solid which contains of one cations, Na, K Ca2 and one of the anions CI, NO, so2- Write…

1, A 0.50 M solution of an acid is 5.6% dissociated. Determine the pH of the sol

1, A 0.50 M solution of an acid is 5.6% dissociated. Determine the pH of the solution and the K, for this acid. 2. Consider the following fully deprotonated anions and give the na…

1, A star with a mass of 1.25 × 1031 kg and a radius of 3.45 × 105 km is initial

1, A star with a mass of 1.25 × 1031 kg and a radius of 3.45 × 105 km is initially rotating on its axis with a period of 24.0 days. The star collapses and becomes a neutron star w…

1, All of these pollutants can be detected by their odors except? a. CO b.O3 c.S

1, All of these pollutants can be detected by their odors except? a. CO b.O3 c.SO4 d.NO3 2.In general which airborne material is not likely to be affected by the filters or indoor…

1, Assume that in the acetic acid experiment you obtained the following values:

1, Assume that in the acetic acid experiment you obtained the following values: Tf(acetic acid)=16.1^degC Tf(with 3mL of unknown)= 11.3^degC a. Calculate the moecular weight of th…

1, Calculate Kefor the following (equilibrium concentrations given belowsubstanc

1,         Calculate Kefor the following (equilibrium concentrations given belowsubstances) a)      4NH3 (g)    +     3 O2(g)          2N2 (g)     +    6 H2O (g)    +     heat    …

1, Consider a slotted ring of length 2 km with a data rate of 100 Mbps and 100 r

1, Consider a slotted ring of length 2 km with a data rate of 100 Mbps and 100 repeaters, each of which introduces a 1-bit delay. Each slot contains room for one source address by…

1, Discuss the difference between these alkalinity values: (1), Pm and Pr (2) Pr

1, Discuss the difference between these alkalinity values: (1), Pm and Pr (2) Prand Mf. 2, One liter of solution contains 3.0 g of NaOH and 8.3 g of Na2COs. Compute the theoretica…

1, Isotonic solution is a 0.15 M aqueous solution of NaCl the simulates the tota

1, Isotonic solution is a 0.15 M aqueous solution of NaCl the simulates the total concentration of ions found in many cellular fluids. Therefore, common saline IV fluids given in …

1, Lemonade contains 20% sucrose, 2% salt (NaCl), and 0.5% citric acid (w/v each

1, Lemonade contains 20% sucrose, 2% salt (NaCl), and 0.5% citric acid (w/v each) in water. Calculate the mole fraction for each of these components (sucrose, salt, citric acid an…

1, The following are statements regarding structural features of the single subu

1, The following are statements regarding structural features of the single subunit peptide in the diagram provided. Which statement is correct? options: Interaction "c" represent…