Ascorbic acid, H₂C6H6O6, is a diprotic acid usually known as vitamin C. For this acid, pKa1 is 4.10 and pka2 is 11.79. When 125 mL of a solution of ascorbic acid was evaporated to dryness, the residue of pure ascorbic acid had a mass of 4.31 g. Calculate the molar concentration of ascorbic acid in the solution before it was evaporated. i What was the pH of the ascorbic acid solution before it was evaporated? pH = What was the concentration of the ascorbate ion, C6H6O62, before the solution was evaporated? i M M

Q: B. Molar Mass of a Gas MATERIALS (*student supplied materials) • Lighter* • Large container or…

A: Experiment Procedure: Safety First:  Always wear safety goggles during the experiment to protect…

Q: Pressure can be measured in a. grams. b. meters. kilopascals. d. liters. C.

A: Mass can be measured in meters. Length  can be measured  in meters.

Q: 6. 1.23 x 10* is equal to A. 0.0000123 B. 0.000123 C. 1.230000 D. 123000 E. 1230000

A: 1.23 × 10-4 is equals to

Q: CH3OH

A:

Q: Standard deviation is an indication of the... a. precision of one measurement b. accuracy of one…

A: Standard deviation:a number which is used to inform how measurements for a group are spread out from…

Q: 1. 0=0 2. Zn H,O" H. B но. D

A: ozone reacts with unsaturated ester to give aldehydes,

Q: Read the volume to correct significant figurs. 8

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: A dose of of asprin of 25.0 mg per kilogram of body weight has been prescribed to reduce the fever…

A: The temperature or fever of human body is brought down using aspirin tablets. It also helps in…

Q: How many sig figs are in the following numbers

A: All non-zeros are significant  Leading zeros are non-significant whereas trailing zeros are…

Q: :O: 0:0 Н. H H EN. Q

A: Curved arrows indicate the flow of electrons. The tail of the curved arrow is placed at the source…

Q: turned into notation

A: From the main question, the answer is given as:heat = 55.983 kJWe need to convert this value into…

Q: Which atomic orbital corresponds to the given set of quantum numbers? n = 2, 1 = 1, m/= -1, ms = ½

A: Given set of quantum numbers: n = 2, l = 1, ml = -1, ms = 1/2 We have to find out the atomic orbital…

Q: In the laboratory a student combines 20.8 mL of a 0.216 M aluminum acetate solution with 25.2 mL of…

A: Given: 25.2 ml Zinc Acetate 0.681 M 20.8 ml Aluminium Acetate 0.216 M

Q: Choose the correct description of the meaning of the expression "collecting a gas over water". A. A…

A: In many chemical reactions, the product is a gaseous product and the amount of the gaseous product…

Q: 80. Comment on the accuracy and precision of the data collected about these basketball free-throw…

A: Accuracy : The measure of how close a measurement comes to the actual or true value of whatever is…

Q: Solve each following problem and round to the correct number of S.F. a. 3.2265 x 1000. b. 630.265-…

A: 3.2265 contain 5 significant figures and 1000. contain 4 significant figures. The product should…

Q: Which Units Would A Scientist Use? Pleaar idemih ae wk baar awt anwhrevanriny h Aireing ivou koy…

A: Given that : We have to determine which units would a scientist use for the given statements from…

Q: 2) Which of the following is intensive property? A. The amount of energy produced upon burning…

A: Intensive property is the property of matter which is specific and doesn't change with the amount…

Q: A student conducts an experiment using an unknown hydrate and obtains the following data Crucible…

A: Given - Crucible =  24.31g Crucible+ hydrate = 29.31g Crucible+ anhydrate =  28.26g Mg % = 29.44% S…

Q: Volume is an intensive property. Select one: a. False b. There is no way of knowing. c. True d. It…

A: Intensive property is a physical property of a system that does not depend on the system size or…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".