Screen Shot 2023-12-17 at 2

The Ka for HCN is 4.9 x 10-10. What is the value of Kb for CN-?     Group of answer choices 4.9 x 104 2.0 x 10-5 4.9 x 10-24 4.0 x 10-6

Calculate the p-functions for each ion in a solution that is: i. 0.020M in KClii. 2.7 x 10^-3M in Ca(OH)2iii. 1.42 x 10^-3M in CaCl2 and 2.5x10^-3M in BaCl2

Calculate Q for the following: 125.0 mL of 0.0800 MPb(NO3)2 is mixed with 75.0 mL of 0.0200 MNaCl at 25°C

I need hand written solution only

2 1 20 Obey 1 1 11 1 11 tv 『 Answer Bank Violate 11 1 1 1 1 1 NiA@ zoom

Chemistry Question 22 A population pharmacokinetic model was developed using sparse pharmacokinetic data from two phase III studies. A method for evaluating this model's performance on estimating the pharmacokinetic parameters is: Gantt chart plot Linear regression plot Manhattan plots O A plot of individual predicted vs. observed drug concentrations Observed drug concentration-over time plot

This problem can be worked with Equations 18-6 on a calculator or with the spreadsheet in Figure 18-5. Transferrin is the iron-transport protein found in blood. It has a molecular mass of 81 000 and carries two Fe³* ions. Desferrioxamine B is a chelator used to 18-A. treat patients with iron overload (Box 11-1). It has a molecular mass of about 650 and can bind one Fe³+. Desferrioxamine can take iron from many sites within the body and is excreted (with its iron) through the kidneys. Molar absorptivities of these compounds (satu- rated with iron) at two wavelengths are given in the table. Both com- pounds are colorless (no visible absorption) in the absence of iron. e(M¯' cm¯') A(nm) Transferrin Desferrioxamine 428 3 540 2 730 470 4 170 2 290 (a) A solution of transferrin exhibits an absorbance of 0.463 at 470 nm in a 1.000-cm cell. Calculate the concentration of transferrin in mil- ligrams per milliliter and the concentration of bound iron in micro- grams per milliliter. (b) After…

What other diseases/conditions can you find an increased LAP activity? Give a brief description of each disease/condition. What other diseases/condition can you find a decreased LAP activity? Give a brief description of each disease/condition. Is the LAP Cytochemical Test 100% diagnostic for any particular disorder? Explain your answer Are there any disadvantages for this test? Briefly describe these possible

(14) The Ksp of PbCl2 is 1.6 x10-5 at 25°C. What is the concentration of Pb2+ (in M) in an aqueous solution initially containing 0.13 M Na+ and 0.13 M Cl- and now saturated with PbCl2?

I posted this qs before too, but the answer could not be seen and stated "Math Processing Error". Please Asap. Thank you. A hypothetical neuronal cell shows the following intracellular and extracellular concentration of sodium, potassium, calcium, and chloride ions.   Extracellular concentration (mM) Intracellular concentration (mM) (Ion)out/ (Ion)inside E ion at 37 oC Sodium ion 420 60     Potassium ion 25 420     Calcium ion 16 0.4     Chloride 565 45       Calculate the Nernst potential of these ions at 37 oC . Show your work.

AvapH dT T(V, – Vi) dP AvapH _ AvapH _ AvapH TV -P RT2 RT AvapH For a change of state, AvapS Τνap From this relationship, propose a graphical method that allows to determine AvapH and AvapS. What do AvapH and AvapS correspond to in this graph?

This is actually question from past paper and I really need to answer for theses question

What is the protien gradient?

Give a clear  handwritten answer...with all points explanation needed and choose correct answer

Please ASAP. Thanks What is the effect of the addition of extracellular TTX and TEA on equilibrium potential?     TTX blocks K channel, and TEA blocks Na Channels. No change in the equilibrium potentail.     TTX blocks Na channel and TEA blocks K Channels. The equilibrium potentials become less positive     TTX blocks Na channel and TEA blocks K Channels. The equilibrium potential becomes more positive for both     TTX blocks Na channel and TEA blocks K Channels. No change in the equilibrium potentail.     TTX and TEA blocks Na channel.  No change in the equilibrium potentail.

Given: Bathophenanthroline is a compound that forms a red complex with iron(II). The molar absorptivity for the complex is 22,350 L mol-1 cm-1 at ? = 535 nm.Question: Determine the upper value of the molar concentration range for the iron(II)–bathophenanthroline complex that can be analyzed directly with a spectrophotometer, using a 1-cm cuvette. Please answer fast i give you upvote.

1

H H HO HO. + CH3 Н H2 H C +H CH3 HO НО C OH OH H noradrenaline adrenaline AH? -3182 kJ/mol -246 -3256 +218 +301 J/mol K +186 +375 +131 10. Use the data provided to calculate AHxn, ASxn, and AGrn at 298 K. rxn: AHxn: ASxn:

Pls do fast and i will rate instantly for sure Solution must be in typed form

Vitamin D3 25,000 UNT Oral Capsule Generic name and popular Trade name(s) for this drug Drug classification What is this drug typically used for? Describe the pharmacokinetics of the drug: Onset (O) Peak (P) Duration (D) Half-life (1/2) Metabolized where (M) Excreted (E) Major side effect and/or Adverse Reactions of the drug? Nursing Implications (What do you need to assess, know or plan for with this medication?) Patient Education (What will you tell the patient and family about this drug? What do you need to teach the patient or family to safely take this medication)

Use the following information ( T = 37 oC)                                 ADP + H2O         --->                        AMP + Pi  + H+                  ΔGo’ = -35.7 kJ/mol                                 ATP + H2O         --->                       ADP + Pi + H+                    ΔGo’ = -30.5 kJ/mol     The steady state concentrations for recovering  muscle cell are:                                 [ATP] = 8.74 mM  [AMP] = 316 μM  [ADP] = 0.19 mM Calculate ΔG for the reaction under these cellular conditions (T= 37 oC):                                                                AMP + ATP        --->        2ADP

The Kc value for Mg3(AsO4)2(s) = 3Mg2+(aq)    +   2AsO43-(aq) is 2.1 x 10-20. Determine the Kc for the following:  3Mg2+(aq) +  2AsO43-(aq)  = Mg3(AsO4)2(s) 4Mg3(AsO4)2(s)  =  12Mg2+(aq)  +  8AsO43-(aq)

Suppose that acid HA (dissociation constant Ka) is partitioned between aqueous phase 1 and organic phase 2 with partition coefficient Ko for HA. Assuming that A- is not soluble in the organic phase, show that the distribution coefficient is given by K [H*] D = [H*] + K, = K•CHA %3D Harris (9th) Equation: 23-7

10 mM 100 mM KCI KCI Dish K* CI K*+ K* C- Nernst Equation: Cleft side EZF RT In Cright side ww w What would happen the membrane potential (E) if we added KCI to the left (10 mM) side of this dish? Let's presume the yellow barrier allows potassium to pass but not chloride, as shown. E wouldn't change E would go to a less negative number E would go to a more negative number

8. Construct a theoretical curve for the titration of HAC by sodium hydroxide (NaOH). The volume of acetic acid: in the beaker is 25 ml and its concentration is 0.02 M. The titrant is NaOH and its concentration is also 0.02 M. Calculate pH versus volume of NaOH, which will be added in increments of 1 mL. Construct this titration curve for 35 mL. Show only the calculations at VNaoH=0, 0 Ve).

increasing the concentration of CO increasing the concentration of CO₂ decreasing the volume of the system 2CO(g) + O₂(g) = 2C0₂(g) 0 Answer Bank 000

Macmillan Learning The isoelectric point (pl) of a peptide is the pH at which the peptide ceases to migrate in an electric field. At this pH, a peptide is zwitterionic, meaning it has the same number of positive and negative charges, making it electrically neutral. The pl can be estimated within 0.1 or 0.2 pH units from the pKa values of all the proton dissociable groups in the peptide. The table shows the pK, values for side-chain ionizable a groups, as well as the peptide terminal amino and carboxyl groups. charge: Determine the total positive charge on the peptide GARAIA when all acidic and basic groups are fully protonated. Enter your answer without the sign. Note that the letters in the peptide name represent one-letter amino acid abbreviations. 3.4 12.5 Select the pKa values used to estimate the pl. 8.0 I 8.2 Enter numeric value Group aspartate glutamate histidine cysteine tyrosine lysine arginine peptide amino group peptide carboxyl group pka 3.7 4.3 6.0 8.2 10.1 10.5 12.5 8.0…

Identify the Cholesterol Sterate peak of the GC-MS of Burn Morel mushrooms (Tomentosa) and the M (+/-) peaks that are present. Include the mass and signature intensities of the peaks main product.