what is the correct answerงThe two possible states of a substance in water, dissolved (D) andundissolved (U), are depicted in the PEC diagram below. What is true aboutthis substance?EpUD# configurationsSelect an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.aIt is soluble in water at all temperaturesbIt is insoluble in water at all temperaturesCIt is soluble in water only at high temperaturesdIt is soluble in water only at low temperatures

"Examining the PEC diagram reveals two states of a substance in water: dissolved (D) and undissolved…

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Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter2: Chemistry Of Life

Section: Chapter Questions

Problem 4RQ: Name three vital properties of water in living cells.

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How much of the enzyme proteinase k (solute) is required to make 250ml of a solution with a concentration of .01mg/ml? (Weight/volume ratio)
Gout is caused by an error in metabolism that leads to abuildup of uric acid in body fluids, which is deposited as slightlysoluble sodium urate (C₅H₃N₄O₃Na) in the joints. If the extra-cellular [Na⁺] is 0.15 Mand the solubility of sodium urate is0.085 g/100. mL, what is the minimum urate ion concentration(abbreviated [Ur⁻]) that will cause a deposit of sodium urate?
A chemist prepares a solution of aluminum sulfite (Al, (SO,).) by measuring out 179. µmol of aluminum sulfite into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's aluminum sulfite solution. Be sure your answer has the correct number of significant digits. mmol x10
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pH expresses the molar concentration of hydronium ions in an aqueous solution on a logarithmic scale. (Note that it is common to use the hydrogen ion, H*, to represent the hydronium ion, H3O+.) pH = -log[H3O+] [H3O+] = 10-PH As pH decreases, acidity increases. As pH increases, acidity decreases. • Acidic solution: pH 7 Part A - Calculating pH Submit [H₂0+] 1 Acidic pH 01 10¹ 102 103 104 105 106 107 108 109 10-10 10-11 10-12 10-13 10-14 stomach acid 3 wine lemon tomatoes juice vinegar, black soft drinks, coffee beer 6 Neutral urine milk 7 human blood pure water sea- water baking soda 10 11 12 13 14 milk of magnesia house- hold ammonia oven cleaner Basic household bleach Adapted from Biological Science by Freeman ©2008 Pearson Education, Inc. What is the pH of an aqueous solution with the hydronium ion concentration [H3O+] = 2 x 10-14 M? Make sure that your answer has the correct number of significant figures. For help determining the correct number of significant figures, see Hint 3. ►…
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