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Recitation Worksheet 5 Chapter 4 (Part 1) 1.a What mass of NaIO3 must be used to prepare 500.0 mL of 0.200 M NaIO3? Answer: 19.8 g = Step 1 Use the volume and molarity to find moles of NaIO3: Step 2 Use molar mass to find the mass of NaIO3 needed: b. What volume of 2.5 M NaCl solution must be diluted to make 500.0 mL of 0.10 M NaCl? Answer: 20.0 mL Step 1 Find the moles of NaCl in 500. mL of a ...

Pb2+(aq) + 2 NO3-(aq) + 2 Na+(aq) + 2 I-(aq) ( PbI2(s) + 2 Na+(aq) + 2 NO3-(aq) Step 4: Cancel out any spectator ions. Spectator ions are ions that appear in the reactant side and the product side. (they have to be exactly the same, you could cancel out NO3- & NO3- but not Fe+ & Fe3+, the oxidation # of iron has changed therefore it is not the ...

1. The first step in analyzing ABGs is to assess the pH. Normal blood pH is 7.4, plus or minus 0.05, forming the range 7.35 to 7.45. If blood pH falls below 7.35, it is acidic. If blood pH rises above 7.45, it is alkalotic. If the pH is in the normal range, label it based on which side of 7.4 it occurs. Lower than 7.4 is normal/acidic, higher than

Na 4th step worksheet

4 Chapter 4 Chemistry 1303 B. Molecular and Ionic Equations Metathesis Reaction (also called "double displacement") Ions from two different reactants simply trade partners, Na2CO3 (aq) + Ba(NO3)2 (aq) → BaCO3 (s) + 2 NaNO3 (aq) This was written as a molecular equation in which all reactants and products are shown as complete, neutral chemical formulas.

What is the formula when Na+ and n3 create a compound? When it forms the nitride ion, it gains three electrons to form a 3- ion: N3− . In ionic compounds, the charges of constituent ions must balance. This can be achieved by having three sodium ions per nitride ion. Therefore, the formula of sodium nitride is Na3N .

i) When Na+/K+ pump in action 17. During the refractory period, why are the sodium and potassium gates unable to open for a brief amount of time? So the action potential cannot move backwards 18. Put the following statements in proper order. __3____ Membrane is depolarized __4____ Potassium gates open

Na 4th step worksheet.

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4. Two potassium ions (2 K+, shown as blue triangles) from outside the cell bind to "lock and key sites" on the protein of the Na+-K+ pump. 5. The protein of the Na+-K+ pump changes shape again as the remaining inorganic phosphate group leaves the protein's active site. 6. The two potassium ions (2 K+) are released into the cytoplasm, as another ATP molecule binds to the active site on

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step is more difficult because it is more difficult to remove H+ from a molecule as its negative charge increases. BUT this does not apply for ionic salts of these acids, e.g., Na 3PO 4, Na 2SO 4, etc. They dissociate 100% in one step. Na 3PO 4 (aq) → 3 Na+ (aq) + PO 4 3-(aq) (ii) The conjugate bases are polyprotic bases, i.e., PO 4

Step 4. •At this point, we add one OH-ion to both sides of the equation for every H+ ion present •The H+ ions on one side are combined with the added OH-ions to form H 2 O, and OH-ions appear on the other side of the equation. Part b: Solution to Example 4 •Step 1. Divide the reaction into half-reactions

One whole Na+ ion is at the center of the unit cell, and there are twelve Na+ ions at the edges. Because each edge Na+ ion is shared by four unit cells, the total number of Na+ ions is 1+12×14=4. Similarly, there are six Cl− ions at the face centers and eight Cl− ions at the corners.

Eduardogonzalez1G wrote:Alright finding the molarity is the first step.For the Na2CO3 molarity is 0.08 M. You might want to convert the values from mmol to mols. but 1 mmol= .001 mol. To find a) you convert the mmol to mol to get 0.002015 mole Na.

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Step 1) Neuromuscular Control. The axons of the nerve cells of the spinal cord branch and attach to each muscle fiber forming a neuromuscular junction. i). An action potential passes down the nerve. ii). The nerve releases Ca++ that results in the release of Acetylcholine (ACh) Step 2). ACh binds with the sarcolemma. Step 3).

of the sarcolemma by opening ion channels and allowing Na+ ions into the muscle cell. Na+ ions diffuse into the muscle fiber and depolarization occurs. Depolarization creates a wave of . action potential (electrical current) across the sarcolemma. Action potential travels across the sarcolemma and down the . T-tubules. which triggers the

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Na+ and __ _____ channels open . Na+ 4. What are the two processes that stop the potential from rising above +30 mV? _____ enters the cell. a. inactivation of the voltage-gated Na+ channels . b. opening of the voltage-gated K+ channels . 5. +a. The opening of voltage-gated K channels cause the me mbrane to __ repolarize_____.

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10-4 10-3 10-2 10-1 10 0 10 1 meter cm µm nm hydrogen atom amino acid protein ribosome ... reuptake step for serotonin, and are thus called selective serotonin re-uptake inhibitors ... Na+ (C) sender receiver vesicles with ion channels neurotransmitters (A) (B) synaptic cleft Na+ Na+ Na+ Na+ Figure 6: A Transmitter-Gated Ion Channel (A) A G ...

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Step 4. ACh diffuses across the synaptic cleft and binds to the receptors on the motor end plate. Step 5. Resting membrane potential is at -90mv. Step 6. Na+ rushes in and the membrane depolarizes to +30mv. Step 7. Na+ channels close and K channels open causing repolarization which returns potential to -90mv. ... Muscles Bio 2401 Lecture 3 Test ...

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A) 4, 2 B) 5, 0 C) 3, 0 D) 5, 2 E) 4, 0 21) Arrange the substrates in order of increasing Sn2 reactivity with NaCN: Bromoethane, 1-chloro-3,3-dimethylpentane, 1-chloro-2,2-dimethylpentane, and 2-bromo-2-methylpentane. 22) Arrange the following compounds in order of increasing reactivity toward ethanol solvolysis:

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This worksheet has 4 problems to solve. Mar 10, 2016 · AgNO 3 (aq) + (NH 4) 2 CO 3-> AgCO 3 + (NH 4) 2 NO 3, this is already balanced so separating out the ions would give Ag + and CO 3 2-as the spectator ions, but this isn't true. 25 ×10-3 M (e) the solution contains the sodium and nitrate spectator ions as well as some excess iodide.

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2. Apoptosis: one of the main forms of programmed cell death (not as dangerous to organism as necrosis). A. Active form of cell death enabling individual cells to commit suicide. B. Caspase-dependent C. Dying cells shrink and condense and then fragment, releasing small membrane-bound apoptotic bodies, which

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Abstract. Covalently grafting redox-active polymer to graphene sheets is a practical approach for developing high-performance organic cathode materials. Here, we report a facile preparation of radical polymer poly (2,2,6,6-tetramethylpiperidin-1-oxyl-4-yl methacrylate) (PTMA) grafted graphene sheets (rGO) composites (rGO-g-PTMA) with various ...

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Solubility Rules Worksheet As you work through the steps in the lab procedures, record your experimental values and the results on this worksheet. Data Table A: Investigating Trends in Solubility NH 1+ 4 K Ca 2+Sr Mg Al 3+Fe Zn Cl1 ClO1 4 OH1 CO2 3 SO2 4 PO3 4 Additional Observations:

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Na+ and K+ ions diffuse through the membrane channels from ( low , high ) to ( low , high ) concentration. Circle the correct answer for each. A specialized pump maintains the concentration gradient. It ( does , does not) require energy to move ( 2 , 3 ) Na+ ( in , out ), and ( 2, 3 ) K+ ( in , out ). Circle the correct answer for each.

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Save the supernatant for step 2 and the precipitate for step 3. Step 2: Add 1 drop of 6 M HC2H3O2 and 2 drops of 0.1 M K2CrO4 to the supernatant from step 1. A yellow precipitate confirms the presence of Pb2+. Step 3: Add 10 drops of 6 M NH3 to the precipitate from step 1 and stir thoroughly. Centrifuge and decant. Save the supernatant for step 4.

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View LAB 10_ Chapter 4 Qualitative Analysis.docx from CHEM 1311 at San Jacinto College. Name: LAB 10. QUALITATIVE ANALYSIS The purpose of qualitative analysis experiments is to determine which ions

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As we shall see, the critical decision point occurs at the axon hillock. If the inputs collectively bring voltage-gated Na+ channels to their threshold, an action potential will sweep down the axon. Sherwood et al. (2013), Figure 4-15

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2008T BLUESTAR HEMODIALYSIS MACHINE PARTICIPANT WORKBOOK 1 1 Introduction The 2008T BlueStarTM Hemodialysis Machine Participant Workbook is designed to complement your instructor-led training. While this workbook outlines basic instruction topics, it is not intended to replace

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What direction does the concentration gradient dictate the Na+ ions flow? (Na + ions will flow into the cell) 1f. Carefully examine the sodium-potassium pump. What is the exchange ratio of Na +:K + ions ... will not be able to demonstrate this step with the model). 7.4: Phosphorylation causes a change in the shape of the protein. You can ...