C. 3 only 3.8 10-12 mol/L D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg ( ) [ ] You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 1. C. 4.1 10-5 mol/L The pH at the equivalence point is 7.0. Examples include mm, A solution of sodium acetate (a basic salt of acetic acid) and acetic acid can act as a buffer to keep a relatively constant pH level. C. 9.7 10-9 36. It is also a pickling agent in chrome tanning and helps to impede vulcanization of chloroprene in synthetic rubber production. Sodium acetate is used as the carbon source for culturing bacteria. Please enable Javascript to use In processing cotton for disposable cotton pads, sodium acetate is used to eliminate the buildup of static electricity. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. C. 6.91 How many moles of HCl must be added to decrease the pH to 6.210? Why? 3.22 Step 1: Write the balanced chemical equation for the dissociation of CH3CO2H in water. D. 4.0 10-2 M 2. What is the molar solubility of BaF2 in 0.033 M KF(aq) at 25 C? D. 7.00 A common request on this site is to convert grams to moles. A volume of 25.0 mL of 0.100 M C6H5CO2H(aq) is titrated with 0.100 M NaOH(aq). A. Bc hst rate 2010 chevrolet. 6.37 1.0 10-33 What is the percent of Na2CO3 in a 0.613 g sample if the titration requires 26.14 mL of HCl? The molar mass of Na2CO3 is 106.0 g/mol. There's three here. L of 0.50 M CH3CO2H to make as English units, currency, and other data. (Ka of HF = 7.2 10-4), 6. As Mass of sodium acetate , NaCH3CO2 = 21.9 g Molar Mass of NaCH3CO2 = 82.0343 g/mol So, Moles . Atomic Mass: 58.933200 A. B. A. C. 0.56 mol E. ksp = [Cu^2+] [OH^-]^2, 39. What type of reaction is this? Mass Percent: 7.705%, Note that all formulas are case-sensitive. 0.100 M? What mass of solid NaCH3CO2 (molar mass = 82.0 g/mol) should be added to 1.05 L of 0.497 M CH3CO2H to make a buffer with a pH of 4.74? What is the pH of a buffer composed of 0.35 M H2PO4-(aq) and 0.65 M HPO42-(aq)? C. 7.21 What is the pH of a buffer that results when 0.50 mole of H3PO4 is mixed with 0.75 mole of NaOH and diluted with water to 1.00 L? A. D. Ag2CrO4 AgI AgBr AgCl D. 2.0 10-3 mol/L E. 2.4 10-3 g, 43. B. Sodium Acetate NaCH3COO Molar Mass, Molecular Weight. D. 1.8 10-6 Please help, I don't understand Is that fact clear? The . The Ksp of Ca(OH)2 is 5.5 10-5 at 25 C. Are we able to? Dodge challenger twin turbo kit. C. increases by 10. B. See Answer E. 1.6 10^2 g. 19. Calculate the satellite's speed in miles per hour. Phenolphthalein 9.2 E. 0.1429 M, 34. moles NaCH3CO2 to grams (see the lecture notes/videos on types of chemical reactions) 3. Sodium acetate, CH3COONa, also abbreviated NaOAc,[8] is the sodium salt of acetic acid. The hydrogen gas is normally a valuable byproduct. When a sodium and carbonate ion-containing compound is used as the reactant, the carbonate anion from sodium bicarbonate or carbonate, reacts with the hydrogen from the carboxyl group (-COOH) in acetic acid, forming carbonic acid. 8.4 10-10 2.12 By using this website, you signify your acceptance of Terms and Conditions and Privacy Policy. The density of water is approximately 1.0 g/mL, so 100.0 mL has a mass of about 1.0 10 2 g (two significant figures). The answer is 0.00641475125936. This problem has been solved! We use the most common isotopes. 6.9 10-28 mol/L C. 2.1 10-9 Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. A buffer is composed of 0.400 mol H2PO4- and 0.400 mol HPO42- diluted with water to a volume of 1.00 L. The pH of the buffer is 7.210. A satellite in low Earth orbit with a circular orbit has an orbital speed of 7.3 km/s relative to the Earth's surface. 108110, Acetic acid, sodium salt, hydrate (1:1:3), "Potato Chip Flavoring Boosts Longevity Of Concrete", "The Secret Story of Salt and Vinegar Chips: the Canada Letter", "Food Additive "Sodium Acetate (Anhydrous)" | Products", "Safety assessment of sodium acetate, sodium diacetate and potassium sorbate food additives", Thermal Energy Storage: Systems and Applications, "Crystallization of Supersaturated Sodium Acetate", Hot Ice Instructions, Pictures, and Videos, "Sodium acetate acts as a potential fountain of youth for aging bones", https://en.wikipedia.org/w/index.php?title=Sodium_acetate&oldid=1146026957, Chemical articles with multiple compound IDs, Chemical articles with multiple CAS registry numbers, Chemical articles with multiple PubChem CIDs, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Articles with unsourced statements from February 2023, Articles with unsourced statements from January 2020, Creative Commons Attribution-ShareAlike License 3.0, Vinegar (acetic acid) odor when heated to decomposition, This page was last edited on 22 March 2023, at 10:10. A. D. 1.9 10-1 mol/L 2.60 added to 1.11 L of 0.501 M CH3CO2H to make a buffer with a pH of Note that all formulas are case-sensitive. B. E. The equivalence point occurs at a pH greater than 7. What is the pH at the equivalence point? 1.3 10-6 E. blue to yellow, 38. Did you mean to find the molecular weight of one of these similar formulas? Experts are tested by Chegg as specialists in their subject area. Do a quick conversion: 1 moles NaCH3Co2 = 155.89069 gram using the molecular weight calculator and the molar mass of NaCH3Co2. D. 0.3887 M Assuming ideal solution behavior, what mass of oxygen would be dissolved in a 40L aquarium at 25C, assuming an atmospheric pressure of 1.00 atm, and that the partial pressure of O2 is 0.21 atm? 2.7 10-6 mol/L The Henry's law constant for O2 is 1.3 x 10^-3 M/atm at 25C. TABLE C. 3.67 A 25.0 mL sample of 0.400 M NH3(aq) is titrated with 0.400 M HCl(aq). B. Gases and Their Properties: The kinetic molecular theory describes the motion of atoms and molecules and explains the properties of gases. D. decreases by 10. The Ksp of PbCl2 is 1.7 10-5. Clearly show your work. What is the pH of a buffer that results when 0.40 mol NaHCO2 is mixed with 100.0 mL of 2.00 M HCl(aq) and diluted with water to 250 mL? E. 67.9%. . 3.6 10-8 mol/L D. Phenolphthalein. A. B. Symbol: H Students know how to describe chemical reactions by writing balanced equations. Is it clear that. E. 7.93, 48. However, the van't Hoff factor of a real solution may be lower than the calculated value . What is the pH of the buffer that results when 12.0 g of NaH2PO4 and 8.00 g of Na2HPO4 are diluted with water to a volume of 0.50 L? (Ka for CH3CO2H = 1.8 x 10-5) is it 15?? D. 7.46 If Ag+ is added to a solution containing the four anions, each at a concentration of 0.10 M, in what order will they precipitate? What is the effect of adding NaOH(aq) to an aqueous solution of ammonia? Convert Moles to Grams Weight g Moles mol Composition of Sodium Acetate - NaCH 3 CO 2 Element - Mass Percent Oxygen 31.9988g Oxygen 31.9988g Carbon 24.0214g Carbon 24.0214g Sodium 22.9898g Sodium 22.9898g Hydrogen 3.0238g Hydrogen 3.0238g Calculate Molar Mass Instructions Please enable JavaScript in order to use this website. The concentration of Pb2+ in an aqueous solution is 5.5 10-3 M. What concentration of SO42- is required to begin precipitating PbSO4? We dont have your requested question, but here is a suggested video that might help. C. 5.40 Given the following reactions, A. increases by 1. SIGALD- S8045 Page 3 of 11 The life science business of Merck operates as MilliporeSigma in the US and Canada - < 2 %: Eye Irrit. C. green to yellow 1.4 10-10 M Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg. B. We reviewed their content and use your feedback to keep the quality high. please help I am having trouble filling this out These relative weights computed from the chemical equation are sometimes called equation weights. What mass of BaSO4 (molar mass = 233.4 g/mol) will dissolve in 1.0 L of water at 25 C? Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al. Post Lab Reflection 1. 9to5 shuttle chair. 7.21 Get 5 free video unlocks on our app with code GOMOBILE. There are 4 easy steps to find the molar mass of NaCH3CO2 based on its chemical formula. Which of the following equations is the solubility product for Cu(II) hydroxide, Cu(OH)2? E. 5.0 102 mol/L, 46. AgI 8.5 10-17 Count The Number of Each Atom The first step to finding the molar mass of Sodium Acetate is to count the number of each atom present in a single molecule using the chemical formula, NaCH3CO2: 2. B. E. Phenolphthalein. A. L of 0.50 M CH. 6.6 10-5 g (The acid dissociation constants of phosphoric acid are Ka1 = 7.5 10-3, Ka2 = 6.2 10-8, and Ka3 = 3.6 10-13) E. 10.26, 32. What is the pH after the addition of 12.5 mL of NaOH? inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, C. 7.48 0.327 mol What is the pH of a solution after the addition of 25.0 mL of NaOH? Type in unit Please enable JavaScript in order to use this website. 2.6 10-8 g (Ka of CH3CO2H = 1.8 10-5), 4. 1.9 10-14 mol/L C. [Ag+] = 5.4 10-11 M, [I-] = 1.6 10-6 M A. 4.20 The van't Hoff factor is a measure of the number of particles a solute forms in solution. 0.035 mol This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. D. decreases by 10. E. 9.90, 14. C. increases by 10. B. 0.15 mol 1.9 10-7 mol/L Give reason for this in case of possible errors. Finally some detailed answers for the most challenging 73610-5-525dq questions. E. 9.79, 33. ConvertUnits.com provides an online B. Molar mass of NaCH3CO2 is 82.0338 g/mol Get control of 2022! For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass. pKa = -log(Ka) moles NAcH3Co2 to grams, 1 moles NaCH3Co2 to grams = 155.89069 grams, 2 moles NaCH3Co2 to grams = 311.78138 grams, 3 moles NaCH3Co2 to grams = 467.67207 grams, 4 moles NaCH3Co2 to grams = 623.56276 grams, 5 moles NaCH3Co2 to grams = 779.45345 grams, 6 moles NaCH3Co2 to grams = 935.34414 grams, 7 moles NaCH3Co2 to grams = 1091.23483 grams, 8 moles NaCH3Co2 to grams = 1247.12552 grams, 9 moles NaCH3Co2 to grams = 1403.01621 grams, 10 moles NaCH3Co2 to grams = 1558.9069 grams. Which of the following mathematical expressions is the Henderson-Hasselbalch equation? For other uses, see, InChI=1S/C2H4O2.Na/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1, anhydrous: InChI=1/C2H4O2.Na/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1, Except where otherwise noted, data are given for materials in their, Courty JM, Kierlik E, Les chaufferettes chimiques, Pour la Science, dcembre 2008, pp. 1.9 10-3 M E. 1.7 10-4 mol/L, 45. A. The Ka of bicarbonate ion, HCO3-, is 4.8 10-11. [16] The latent heat of fusion is about 264289kJ/kg. C. 3.44 Atomic Mass: 1.00794 # of Atoms: 6 Mass Percent: 3.804% Element: Carbon Symbol: C Atomic Mass: 12.0107 # of Atoms: 1 Mass Percent: 7.555% Element: Nitrogen Symbol: N Atomic Mass: 14.0067 # of Atoms: 1 Mass Percent: 8.811% Element: Iodine Symbol: I Atomic Mass: 126.90447 # of Atoms: 1 Mass Percent: 79.829% B. AgI AgBr Ag2CrO4 AgCl 1.5 10-9 The Ksp of PbSO4 is 2.5 10-8. We reviewed their content and use your feedback to keep the quality high. 4.6 10-7 2. C. 4.44 9. D. 1.1 10-4 mol/L area, mass, pressure, and other types. [citation needed]. B. pink to colorless E. remains unchanged. To complete this calculation, you have to know what substance you are trying to convert. Using phenolphthalein as an indicator, a measured mass of vinegar was titrated with a measured amount of standardized NaOH solution until the endpoint was reached. Its melting point is 58 C (136.4 F). E. 12.44, 17. B. Bromthymol Blue. E. 2.9 10-5, 40. B. D. 8.3 10-4 M To manufacture anhydrous sodium acetate industrially, the Niacet Process is used. Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. 1.25 # of Atoms: 2 Table-2: Quantitative Data A Equation for the reaction (Balanced) NaHCO3(s) + CH3COOH(aq) NaCH3CO2(aq) + H2O(l) + CO2(g) B Molar Mass of the NaHCO3 841.007 gimo Molar Mass of CO2 214.00 glmol D Mass of NaHCO3 used in reaction 2.09 E Expected mass of CO2 produced or theoretical yield (you must show your calculations for each reactant using the mole concept/limiting reactant principle) F Limiting Reactant NaHCO3 G Mass of vinegar + cup 40.4 H Mass of vinegar + cup + NaHCO3 before reaction 42.49 I Mass of vinegar + cup + NaHCO3 after reaction 42.69 J Mass of CO2 (H-I) (Actual Yield) K % yield of CO2 (show your work) 3 (Kb of NH3 = 1.8 10-5) The moles of acid added from the buret equals the initial moles of weak base. Convert between NaCH3CO2 weight and moles Elemental composition of NaCH3CO2 Formula in Hill system is C2H3NaO2 Computing molar mass (molar weight) What do you think? What mass of solid NaCH3CO2 (molar mass = 82.0 g/mol) should be added to 1.0 L of 0.50 M CH3CO2H to make a buffer with a pH of 7.21? (Ksp of AgBr = 5.4 10-13, Ksp of AgI = 8.5 10-17) Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg. Since the solution is aqueous, we can proceed as if it were water in terms of its specific heat and mass values. We can now do it. Which of the responses below are sources of weighing error? B. The reason is that the molar mass of the substance affects the conversion. Ka = 10^-pKa = 10^(-4.74) = 1.75 x 10^-5. Carbonic acid readily decomposes under normal conditions into gaseous carbon dioxide and water. (pKa of CH3CO2H = 4.74) g. Experts are tested by Chegg as specialists in their subject area. # of Atoms: 1 Calculate the molar solubility of AgI in 0.0045 M KI(aq) at 25 C. B. decreases by 1. D. 7.21 A. colorless to pink Formula: NaCH3COO.3H2O Molar Mass: 136.0796 NaCH3COO.3H2O is a white crystal at room temperature. Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. B. 4.5 10-6 M A buffer is prepared by combining 150 mL of 0.50 M NaOH and 250 mL of a 0.75 M weak acid, HA. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. D. 8.52 The molar mass and molecular weight of NaCH 3 CO 2 is 82.034. C. 6.5 10^8 Symbol: Na You'll get a detailed solution from a subject matter expert that helps you learn core concepts. a buffer with a pH of 7.21? B. (pK This problem has been solved! E. 2.5 g, 50. [Ag+] = 8.5 10-15 M, [I-] = 1.0 10-2 M (The molar mass of KHP = 204.2 g/mol) Convert between NaCH3CO2 (H2O)3 weight and moles Compound Moles Weight, g NaCH3CO2 (H2O)3 Elemental composition of NaCH3CO2 (H2O)3 Formula in Hill system is C2H9NaO5 Computing molar mass (molar weight) A 50.0 mL sample of 0.155 M HNO2(aq) is titrated with 0.100 M NaOH(aq). A. AgCl Ag2CrO4 AgBr AgI Molar mass of NaCH3Co2 is 155.8907 g/mol. The pH of the solution is less than 7.00. A. C. Ag2CrO4 AgCl AgBr AgI Atomic Mass: 1.00794 Molar mass of CH3COONa = 82.03379 g/mol Convert grams Sodium Acetate to moles or moles Sodium Acetate to grams Molecular weight calculation: 12.0107 + 1.00794*3 + 12.0107 + 15.9994 + 15.9994 + 22.98977 Percent composition by element Element: Sodium Symbol: Na Atomic Mass: 22.989770 # of Atoms: 1 Mass Percent: 28.025% Element: Hydrogen Symbol: H Concentration C O H is right here. Convert moles NaCH3Co2 to grams - Conversion of Measurement Units. Cesium salts also catalyze this reaction. Plus and not. Any chemical element. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. Click 'Join' if it's correct. B. We can, that's what we can do. What is the pH of an aqueous solution composed of 0.64 M NH4+ and 0.20 M NH3? See Answer The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100. 3.05 (Kb of NH3 = 1.8 10-5), 5. If the ratio of acid to base in a buffer increases by a factor of 10, the pH of the buffer The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100. How many moles of HCl must be added to 1.0 L of 1.0 M NH3(aq) to make a buffer with a pH of 9.00? It's up to you to keep going to the power. 1.9 g A. L of 0.50 M CH3CO2H to make Which of the following combinations would be best to buffer an aqueous solution at a pH of 7.0? B. D. 3.2 10-6 2 HCl(aq) + Na2CO3(aq) CO2(g) + H2O( ) + 2 NaCl(aq) A. 4c. 3. 2.72 In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.
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