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- A solution of sodium cyanide, NaCN, has a pH of 12.10. How many grams of NaCN are in 425 mL of a solution with the same pH?The pOH of a solution is 9.33. Calculate the hydrogen ion concentration of the solution. Be sure your answer has the correct number of significant digits. [H] = 4.67 × 10 (×(...) 11 M x10 X Ś||| O crosoft O 3 Sodium hydrogen carbonate (NaHCO3), also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid indigestion is the burning sensation you get in your stomach when it contains too much hydrochloric acid (HCI), which the stomach secretes to help digest food. Drinking a glass of water containing dissolved NaHCO3 neutralizes excess HCl through this reaction: HCl(aq) + NaHCO3(aq) NaCl(aq) + H₂O(l) + CO₂(g) The CO₂ gas produced is what makes you burp after drinking the solution. Suppose the fluid in the stomach of a man suffering from indigestion can be considered to be 200. mL of a 0.072 M HCl solution. What mass of NaHCO3 would he need to ingest to neutralize this much HCl ? Be sure your answer has the correct number of significant digits. W CHEMICAL REACTIONS Solving for a reactant in solution Microsoft Microsoft 6.52.210... 08 g Explanation 10 Check 280 x10 X 2 NOV 13 Ś ||| - K Jay SETMANES tv ♫ MacBook Pro DZA . E © 2022 McGraw Hill…
- What is the pOH for a solution at 25 °C that has a H3O+ concentration of 6.57 ×10-6 M? A 34.1 % (NH4 )2SO4 (molar mass = 132.1 g mol−1) has a density of 1.15 g mL−1. What is the molarity of this solution? (the answer should be entered with 3 significant figures; do not enter units; give answer in normal notation--examples include 1.23 and 120. and -123 and 123. and 12.3) Determine the boiling point of a solution that contains 78.5 g of compound W (molar mass = 132.5 g mol–1) dissolved in 1088.6 g benzene (C6H6; molar mass = 84.156 g mol–1; Kb = 2.53 °C m–1; boiling point of pure benzene = 80.1 °C). (the answer should be entered with 3 significant figures; do not enter units; give answer in normal notation--examples include 1.23 and 120. and -123 and 123. and 12.3) NEED HELP ASAP NO WORK NEEDEDConsider the following chemical equilibrium for the weak base CN in water: CN- (aq) + H₂O(1) = HCN (aq) + OH(aq). Which of the following statements is correct when more water is evaporated from system? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b C d pH will go up; [OH-] will go up; net amount of OH will go up pH will go down; [OH-]will go up; net amount of OH will go down pH will go down; [OH-]will go down; net amount of OH will go down pH will go up; [OH-] will go up; net amount of OH will go down. Calculate the moles of H+ delivered to eachsample based on your experimental dataand record these values in Data Table 2. 0.1M HCl = 0.1 moles HCl / 1 Liter solutionCalculate the moles of OH- in each sampleand record these values in Data Table 2. H+ + OH- H2O Calculate the moles of Ca2+ in each sampleand record these values in Data Table 2. Ca(OH)2 Ca2+ + 2OH24. Calculate the molar solubility of Ca(OH)2for each sample and record these values inData Table 1. Molar solubility = moles / Liter Sample 1 Sample 2 Sample 3 Mass of Erlenmeyer Flask 25.37 25.37 25.37 Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (lime water) 28.18 28.21 28.28 Mass of Calcium Hydroxide Solution Volume of Ca(OH)2 Density = 1.000 g/mL Concentration of HCl (M) Initial HCl volume in Syringe 1.0ml 1.0ml 1.0ml Final HCl volume in Syringe .54ml .58ml .5ml Volume of HCl Delivered .46ml .42ml…
- In a 4.9 mm aqueous solution of benzoic acid (C6H₂CO₂H), what is the percentage of benzoic acid that is dissociated? You can find some data that is useful for solving this problem in the ALEKS Data resource. O Round your answer to 2 significant digits. []% x10 X Ś |||Suppose a 0.48M aqueous solution of phosphoric acid (H,PO,) is prepared. Calculate the equilibrium molarity of HPO,. You'll find information on the properties of phosphoric acid in the ALEKS Data resource. Round your answer to 2 significant digits. M x102- Suppose a 0.19M aqueous solution of phosphoric acid (H3PO4) is prepared. Calculate the equilibrium molarity of HPO4 You'll find information on the properties of phosphoric acid in the ALEKS Data resource. Round your answer to 2 significant digits. Ом 3 C ☐ x10 ☑ D
- What is the [H3O*] in a 175 mL sample of 0.0629 M KOH(aq)? 6.08 x 10-13 mol L-1 8.17 x 10-14 mol L-1 2.78 x 10-14 mol L-1 1.59 10-13 mol L-1 9.08 x 10-13 mol L-1a Calculate the molar concentration of H3O+ in a solution that contains 4.1x10-12 M OH². (Enter your answer to two significant figures.) [H3O+] = M b Calculate the molar concentration of H3O+ in a solution that contains 7.5x10-6 M OH". (Enter your answer to two significant figures.) [H3O+] = M1) A 10mL solution of 3M HCI is diluted to 50mL. What is the concentration of the 50mL solution? 2)In Beer’s law (A=abc), what corresponds to y,m,x and b in the equation of a line (y-mx + b)? Note that b is not the same in the two equations. 3)You have two solutions containing the same compound having the same pink color. The concentration of the first solution is 2.0M, while the concentration of the other solution is 2.5M. Absorbance of each solution was measured with the same spectrophotometer at the same wavelength. a) Which solution has the more intense pink color? b) Which solution has the higher absorbance?