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Oceanic uptake of carbon dioxide is thus described:CO2 (g) + H2O ⇔ H2CO3, K = [H2CO3]/PCO2 = 3 x 10-2 M atm-1 H2CO3 ⇔ HCO3- + H+,  K = [HCO3-][H+]/[H2CO3] = 9 x 10-7 moles/LHCO3- ⇔ CO32 - + H+, K = [CO32 -][H+]/[HCO3-] = 7 x 10-10 moles/L CaCO3 ⇔ Ca2+ + CO32-    Kc = 4 x 10-9 M2 What is the full charge balance equation for this system?

Oceanic uptake of carbon dioxide is thus described:CO2 (g) + H2O ⇔ H2CO3, K = [H2CO3]/PCO2 = 3 x 10-2 M atm-1 H2CO3 ⇔ HCO3- + H+,  K = [HCO3-][H+]/[H2CO3] = 9 x 10-7 moles/LHCO3- ⇔ CO32 - + H+, K = [CO32 -][H+]/[HCO3-] = 7 x 10-10 moles/LCharge balance equation:[H+] = [OH-] + [HCO3-] + 2[CO32 ]  If the CO2 concentration in the atmosphere is 300 ppm, what is the pH of the ocean?

Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Na+-glucose symporter. Recall that the Na+ concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Na+ ions into the cell to the "uphill" transport of glucose into the cell. If the Na* concentration outside the cell ([Na*lout) is 149 mM and that inside the cell ([Na*]in) is 21.0 mM, and the cell potential is –54.0 mV (inside negative), calculate the maximum energy available for pumping a mole of glucose into the cell. Assume the temperature is 37 °C. kJ What is the maximum ratio of [glucose];n [glucose]out AGgluc = mol that could theoretically be produced if the energy coupling were 100% efficient? 3.5 x 10–4 7.96 2900 1.13 O O O

E-book - Elementary Bioorgani × My Course - Elementary Bioorg X endocrine system - Google Do X Homework 1 Matter and Materia X Question 12 of 23 - Homework X assessments.macmillanlearning.com/sac/5338340#/5338340/11/1 Update : O Assignment Score: Lx Give Up? O Hint Check Answer 52.2% Resources < Question 12 of 23 Attempt 3 Carry out the given conversions from one metric unit of length to another. 83.5 Mm = km 4.75 nm = mm * TOOLS х10 !!!

You are supplied with the following: / Jy word voorsien van die volgende: NaCl(Mr= 58,443 g /mol) 2.5MTris-Cl, pH 8 solution /oplossing (1 Litre) EDTA,natriumsout(Mr= 380,2g/mol) 10% sodium dodecyl sulphate solution / natriumdodecyl sulfaat oplossing Proteïnase K solution / oplossing (50 mg dissolved / opgelos in 1 ml ddH2O) You need a digestion buffer consisting of the following: / Jy moet 'n verteringsbuffer op maak wat uit die volgende bestaan: 15m M NaCl 75 mM Tris-Cl,pH 8 16 mM EDTA,pH 8 0.8% sodium sulphate / natrium dodecyl sulfaat 0,75 mg/ml proteïnase K How will you prepare 500 ml of the digestion buffer? Show all your steps and calculations. Remember to explain exactly how you will make it up.

A Life Science-1803035-377210-1 A Life Science-1803035-377210-1 1803035.agilixbuzz.com/student/142171010/activity/b13bdb49b1d84a84a3aff52cc918e067 Todigy Jackson-Wonder E. E Edulastic: Formativ. RL Home Zearn Math: Top-rat. A Who was the capta. Netflix M Wes mical Reactions - Show it > Life Science-1803035-377210-15 / Unit 7: Chemical Reactions/ Week 23 - Chemical Reactions/ Monday, Lesson 107 - 2/8/21 Identifying the Parts of a Chemical Reaction. Identify the reactants and products in the chemical reaction below. Identify the reactants: CH4 + 202 --> CO2 + 2H2O Your answer re attempting to view Google Drive co ts google.com/Login If it still d new tab Identify the products: CH4 - 202 --> CO2 + 2H2O Yok an Identify the reactants: NaCi Na CI OUS ACTIVITY New version available (30 220) GET IT NOW WHAT ARE REACTIONS?A WHAT ARE REACTIONS?- READ IT

You have just started working in an Urgent Care Clinic as a nurse.  Mom brings in her 3 year old little boy, Brandon.  Mom states that Brandon has been having fever up to 104F and he isn't eating or drinking anything because he feels very sick to his stomach, not to mention crabby!  He's also been pulling a lot at his right ear and sounds congested.  At the last well visit with the Pediatrician (about 2 weeks ago), Mom states that Brandon weighed 32 pounds. On exam today, his weight is 12.5 kg.  Additionally his eyes are darkened and sunken, his mouth is dry with some white crusting around the lips.  His temperature is 39C, other vitals signs are normal.  Though he looks ill he appears to be medically stable.  The doctor rushes in, quickly exams Brandon, diagnoses him with otitis media and then barks off orders to you that you then need to convey accurately to Mom.  The orders include:  push fluids, ibuprofen 10mg/kg every 6 hours if temp > 38C, and begin taking a 10-day course of…

6. A 190 lb worker in a factory received an exposure to AB which has a molecular weight (MW) of 278 g/mole. AB is completely metabolized in the body to A (MW 194) and B. A is completely excreted in the urine and B is further metabolized to five different compounds. A 24-hr total urine sample was 2060 ml, Analysis showed the concentration of A in the urine was 1.28 ng/mL What was the absorbed dose of AB in ug/kg body wt?

Soln. 1 Soln. 2 Soln. 3 Analysis of saturated Calcium lodate "Ca(103)2" solutions Molarity of 103 Molarity of Ca²+ (mol/L) (mol/L) 7.34410-5 0.005 Moles of S2032- used 4.406x10 -4 3.694×10 Average Ksp: +4 3.204×10 Moles of 103 reacted 7.34×10 6.156 x 10-5 5.34410 5 = 0·0147 6.156X10-5 0.005 0.0123 5.34x10-5 0.005 Ksp

1) Listen The Ksp value for calcium sulfate [CaSO4] is 2.40 X 10-5 and a professor made 1825 mL of a CaSO4(ag) solution but then one of his graduate student accidentally poured in a 0.125 M solution of calcium phosphate [Ca3(PO4)2] solution. You may ignore the additional volume coming from the Cag(PO4)2 solution to make the calculation simpler. Now that you have calculated the new equilibrium constant (K) with this common ion effect then which way will the chemical equilibrium shift? need more information to be determined at equilibrium chemical equilibrium will shift to the right first and then to the left chemical equilibrium will shift to the right chemical equilibrium will shift to the left 201591..docx LAB EXP. #3 -..docx Show All

口 Tools Window Help A 79% Wed 5:2 CHEM2-CH 6-WORKsheet 6 (2).pdf (page 3 of 6)-Edited Q Search 6. Your body deals with excess nitrogen by excreting it in the form of urea, NH2CONH2. The reaction producing it is the combination of arginine (C,H14N,O2) with water to give urea and ornithine (C;H12N2O2). OʻH + ?O*N*'H°Ɔ Urea O'NHO + HNOƆ'HN Arginine Ornithine [Molar masses: 174.2 18.02 60.06 132.2] If you excrete 95 mg of urea, what quantity of arginine must have been used? What quantity of ornithine must have been produced? 3. MacBook Air

Gypsum (CaSO4) is one of common precipitants in brackish water desalination processes. CaSO4 ⇋ Ca2+ + SO42-                                     Ksp = 10-4.6Assume a water containing: [Ca2+] = 10-2.1 M; [SO42-] = 10-3.2 M.(a) Find Qsp or IAP for the given water. (b) Find the solubility index (SI) and determine whether CaSO4 is under, super, or at saturation in the water.

3. A bacteria is able to grow on hexadecane as a substrate: C16H34 + 16.28 O2 + 1.42 NH3 →1.65 C4.4HBO₂N8 + a CO₂ + 13.11 H₂O (a) What is the respiratory quotient (mol/mol)? (b) What is the cell formula for this microorganism? (c) Assuming 100% conversion, calculate the yield of cells from hexadecane (Yx/s) and from oxygen (YX/0₂).

The catalytic activity of an insect aminopeptidase was investigatedusing an artificial peptide substrate. The Vmax was 4.0 × 10-7 M/s and the KM was 1.4 × 10-4 M. The enzyme concentration used in the assay was 1.0 × 10-7 M.   What is the value of kcat?     2.86 x 10-3 M     0.25 M/s     4.0 s-1      2.86 x 104 s/M     0.25 s-1

Solution 1 Solution 2 Solution 3 Solution 4 Solution 5 Concentration iron(III) nitrate 0.00200 0.00200 0.00200 0.00200 0.00200 [Fe(NO3)3] (M) Concentration potassium thiocyanate 0.00200 0.00200 0.00200 0.00200 0.00200 [KSCN] (M) Volume Fe(NO3)3 (mL) 5.00 5.00 5.00 5.00 5.00 Volume KSCN (mL) 5.00 4.00 3.00 2.00 1.00 Volume DI water (mL) 0.00 1.00 2.00 3.00 4.00 Initial concentration [Fe3+] (M) 0.00100 0.00100 0.00100 0.00100 0.00100 Initial concentration [SCN‍] (M) 0.00100 0.000800 0.000600 0.000400 0.000200 Absorbance 0.269 0.192 0.154 0.104 0.052 Equilibrium [FeSCN2+] (M) 0.000198 0.000141 0.000113 0.0000765 0.000038 Equilibrium constant Kc Average Kc

Q27 A 10-1 is performed on a culture of bacteria in order to perform viable plate counts. From the dilution, *0.1 mL* of solution is plated on solid media, and 265 colonies of bacteria grow on the plate.  Assuming each colony came from a single bacterium, how many bacteria are in a single mL of the original culture? Express your answer as a whole number. Since only 0.1 mL is put on the plate, this counts as an extra dilution!!! Any time less than 1 mL is transfered, a dilution is being performed. Any time more than 1 mL is transfered, a concentration is being performed.

+ > C a apclassroom.collegeboard.org/113/assessments/assignments/44514144 Login 6 My AP Login - Coll. I LanguageTool - Onl. Co. Biography of Albert. Pre-AP Unit 3 Learning Checkpoint 2 CollegeBoard 1-0-0-0-0-00-0 10-11 4 9. Question 9 A CH4 (g) + 2 O2 (g) CO2 (g) + 2 H2O (g) When CH,(g) is burned in 02(g), the reaction represented by the equation occurs. If 32 g of CH, is burned completely, how many moles of CO, are produced? Enter the number of moles to the nearest whole number. mol TL 11 46

Help 100% 47 T. "ublic Health Ch HSC 258 - Major Projec x MindTap - Cengage Lea X C The Illustration To T =55750828934189288909969212&elSBN=9781305657571&id=D1061392007&nbld=21... * Q Search t Referonces Use the References to access important values if needed for this question. For the following reaction, 50.4 grams of sulfur dioxide are allowed to react with 17.9 grams of water. sulfur dioxide (g) + water (I) sulfurous acid (H2SO3) (g) grams What is the maximum amount of sulfurous acid (H,SO3) that can be formed? What is the FORMULA for the limiting reagent? grams What amount of the excess reagent remains after the reaction is complete? Submit Answer

Anna analyzed arsenic content on a fish purchased from local wet market. According to Food Regulation 1985, permissible level for arsenic in fish and fishery product is 1 ppm. In this study, an average of 11.4 2.1 ng/g was obtained based on six sample replicates. Suggest a suitable analytical instrument to be used in this analysis and draw a conclusion on the safety of arsenic content of this fish sample.

A direct enzyme-linked immunosorbent assay (ELISA) test on a patient's sample is shown below. Development of a strong (dark) color reaction would indicate: 1 Antibody is adsorbed to well. 2 Patient sample is added; complementary antigen binds to antibody. 3 Enzyme-linked antibody specific 4 Enzyme's substrate () is added, for test antigen is added and binds and reaction produces a product that causes a visible color change (O). to antigen, forming sandwich. A low concentration of a specific antigen in the patient's sample O A high concentration of a specific enzyme in the patient's sample The patient's antibody is specific for the enzyme's substrate O A high concentration of a specific antigen in the patient's sample A high concentration of a specific antibody (against the test antigen) in the patient's sample

You work in a research organization that is looking for markers of various diseases that can be used as a diagnostic for the disease. It has been reported in the past that high levels of Cu are found in the sweat of people with cystic fibrosis. One of the research projects is focused on looking for high levels of Cu in samples that can be obtained non-invasively such as saliva, sweat, hair, nails, etc. The lab will analyze large samples for Cu. What instrument would you recommend purchasing to support this work, Atomic absorption spectrophotometer or an inductively coupled plasma atomic spectrophotometer? Explain the basis for your decision.

LTE+ 74% 5:38 PM KB/s 200406_Homework..mdahl_Chapter 04 - Saved Homework (Chapter 4) 2019. 4. 6 Example 4.1 Calculate the molarity of a solution preparcd by dissolving 11.5 g of solid NaOH in enough water to make 1.50 L of solution Example 4.2 Calculate the molarity of a solution prepared by dissolving 1.56g of gascous HCl in enough water make 26.8 mL of solution. Ехample 4.3 Give the concentration of each type of ion in the following solutions: (a) 0.50 M Co(NO:) (b) 1 M Fe(ClO4)3 Example 4.4 Calculate the number of moles of Cl ions in 1.75 L of 1.0 x 10-3 M ZnCl,. Ехample 4.5 Typical blood serum is about 0.14 M NaCl, What volume of blood contains 1.0 mg NaCl? Example 4.6 To analyze the alcohol content of certain wine, a chemist needs 1.00 L of an aqueous 0.200 MK CrO (potassium dichromate) solution. How much solid K CrO, must be weighed out to make this solution? Ехample 4.7 What volume of 16 M sulfuric acid must be used prepare 1.5 L of a 0.10 M H,SO, solution? Ехample 4.8 Using the…

Chemistry 5 grams of cereal was crushed and dissolved in 25 mL water and placed in a dialysis bag. This sample was dialysed over a week in a beaker which contains 500 mL of water. 5 mL of the dialysate (an aliquote from the 500 mL) was separated to determine the glucose concentration. The glucose concentration was determined as 5 mM. Calculate the amount (% w/w) of glucose present in the cereal. Hint: The molecular weight of glucose is 180.

40190520 O BCPS Links Q Quizlet Live | Quizlet H LA 2 O Destiny Discover H. 9 Unit 2 Olympics | S. PowerPoint SWYK: FFF Microscopy, Cell Theory, and Cell Processes POSSIBLE POINT Match the cell organelle with its function cell membrane mitochondrion nucleus chloroplast :: controls the movement of materials in and out of a cell :: controls all cell processes :: carries out photosynthesis in plants and algae : carries out cell respiration 3\

Let me tell you about their task: The students were provided with 5 drinks (sports/soft drinks) and they were asked to determine the glucose concentration in these drinks in the units of g/100mL. (Why these units? Well, once the students have the concentrations in g/100mL they will be able to compare their values with the nutritional values given on the drink bottles’ labels). The samples of the five drinks were all diluted 1/100 (i.e. by a factor of 100). This was an essential step in the method because, without it, the machine used to analyse the glucose concentration (spectrophotometer) would have given an error as the concentration would have been too high for accurate detection. What this means for the students is that the dilution factor will have to be taken into consideration in their calculations (remember the aim is to calculate the concentration in the original drink and not in the diluted drink). The students decided to save time and form five groups where each group was…

nat Tools Add-ons Help Last edit was 6 minutes ago 14 BIU 三 mal text Arlal + 1. What is the smallest unit of life? a. Вacteria b. Virus C. ameba d. cell I I!!

Write the expression for Keq for the following reactions. In each case indicate whether the reaction is homogeneous or heterogeneous.(a) N2(g) + 3 H2(g)  2 NH3(g) Keq = PNH32 / (PN2 PH23) Keq = (PN2) (3 PH2) / 2 PNH3     Keq = PN2 PH23 / PNH32 Keq = 2 PNH3 / ((PN2) (3 PH2)) The reaction is     (b) 4 HCl(g) + O2(g)  2 H2O(l) + 2 Cl2(g) Keq = PHCl4 PO2 / PCl22 Keq = 2 PCl2 / (4 PHCl PO2)     Keq = 4 PHCl PO2 / 2 PCl2 Keq = PCl22 / (PHCl4 PO2) The reaction is     (c) H2(g) + I2(g)  2 HI(g) Keq = 2 PHI / (PH2 PI2) Keq = PH2 PI2 / 2 PHI     Keq = PH2 PI2 / PHI2 Keq = PHI2 / (PH2 PI2) The reaction is

Help 100% 41 Public Health Ch * HSC 258 - Major Projec X Mind Tap - Cengage Lea x C The Illustration To T =55750828934189288909969212&elSBN=9781305657571&id=1061392007&nbld=21... * Q Search References Use the References to access important values if needed for this question. It is desired to produce 6.30 grams of sulfur trioxide by the following reaction. If the percent yield of sulfur trioxide is 78.4 %, how many grams of sulfur dioxide would need to be reacted? grams sulfur dioxide sulfur dioxide(g) + oxygen(g)· → sulfur trioxide(g) Submit Answer

.. C Chrome File Edit View History Bookmarks OpenStax - Cher x app.101edu.co 1 7 +/- 2 5 Phthalonitrile (CHN) is produced by the ammoxidation of o-xylene (C₂H₁) according to the following reaction: C₂H₁ (1) + O₂(g) + NH₂(g) → C₂H₂N₂(s) + H₂O(1) How many grams of water would be produced by the complete ammoxidation of 3.98 moles of o-xylene? 8 Chemistry 2e - CX . Question 13 of 24 | g 3 6 9 Profiles Tab Window Help O Aktiv Chemistry X X C + x 100 Submit : f Su C C Copp (CsH gram: of pht < Pre

Calculate the solubility of PbF, in water at 25 °C. You'll find K data in the ALEKS Data tab. sp Round your answer to 2 significant digits. x10

A water quality investigation is conducted in a suburban stream. Investigators determine that there are high amounts of developmental malformations in the bluegill fish population. Which of the following statements suggests the most likely cause of this change in the bluegill population? A. Surface runoff containing nitrates from animal feedlots is entering upstream of the bluegill population. Surface runoff containing phosphates from animal feedlots is entering upstream of the bluegill population. Surface runoff containing pollutants from acid precipitation is entering upstream of the bluegill population. Surface runoff containing endocrine disruptors is entering upstream of the bluegill population.