• UCI has a 137CS source about 4,000 Ci now. It was new in 1969. How active was it when new?

Q: f the cells were spread out into a thin layer that was a single cell thick, what would be the total…

A: The values are provided in question= 1.35 kg Number of cells of brain = 4.11*1011 The density of…

Q: How long would it take to plate out 28.3 g of copper from Cu2+ using 12.2 amps?   3520 minutes…

A: Charge= current *time Time= Charge/current  1 mole of cupped required 2 moles of electrons  1 mole…

Q: Solve the following problem. Consider the reaction: N_H + 2 Nº 4(9) + 6 NO + 2 H,0 2** 4(g) 2…

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Q: What will prevent iron from interfering with the aluminum measurements?

A: To prevent iron from interfering with the aluminum measurements, it is important to use a suitable…

Q: The weight of oxygen that can be generated at the anode using 800 mA after 10 minutes is: (1 Faraday…

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Q: about 232°C. The combustion reaction is: S (s) (s) (g) 2. What happens to the concentration of…

A: When a particular reaction goes on , then reactants are transformed into products with time…

Q: Given the Ksp for Ag2CrO4 is equal to 1.20 x 10-12, calculate the percent error in your…

A: The Ksp  for Ag2CrO4 = 1.20 x10^-12  The average Ksp of Ag2CrO4 is found to be 1.1x10^-12

Q: Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar. Drag each item to…

A: These all are amino acids which is classified in different way according to human body or according…

Q: Consider the following reaction and the tabulated thermochemical data at 298 K. Substance 4 NH AH°…

A: Standard entropy is the entropy of one mole of a substance at a temperature of 298 K and a pressure…

Q: A baby's spoon with a surface area of 6.25 cm² is plated with silver from AgNO3 using a current 2 A…

A: Given : Surface are of spoon = 6.25 cm2  Current = 2 A And time = 2 hr 25 min = 145 mins…

Q: Which of the following are equivalent to 2,500 ppm Cu2+? MW: Cu (63.55) 2.5 ppb Cu2+ 2,500,000 ppb…

A: Given: Concentration of Cu2+ = 2500 ppm Molecular weight of Cu = 63.55 g/mol

Q: 2. Can storing batteries in a cold place, such as a refrigerator or freezer, help prolong of life ?…

A: A battery can be defined as a device that converts chemical energy into  electric energy by means of…

Q: Write a balanced chemical equation for the reaction that occurs when crotonaldehyde, C₂H, COH(1), is…

A:

Q: 16. A child takes 15 mg of elemental iron PO BID. How many milliliters of ferrous sulfate 500…

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Q: Concrete technology

A: As the question contains multiple subparts, we will solve the first three subparts for you. To get…

Q: At STP conditions, 25 mL of hydroiodic acid generates 1.20 L of H2 gas when combined with excess…

A: Given-> Volume of HI = 25 ml = 0.025 L      (1 L = 1000 ml) Volume of H2 gas = 1.20 L At STP->…

Q: professor Scimemi has accepted you as a Master’s student and you are involved in a project that…

A: You need to make 2.5 mM KCl. The formula for weighing is as follows: Amount of KCl (g) = [Molarity…

Q: From the plotting a graph between Ecel (EMF) and log [Ag+ ]. E°Ag can be determined from calculating…

A: Answer - plotting of Graph between Ecell (EMF) and log [Ag+]. EoAg can be determined from slope.…

Q: Which of the following statement/s is/are correct? (A) The quantity AH is dependent on the pathway…

A: A) the quantity ∆H is dependent on the pathway to which this value is computed.

Q: What is the oxidation state of iron in K4Fe(CN)6? O a 2+ Ob 4+ Oc. 6+ Od 3+

A: Oxidation number of a neutral  molecule is always zero. Using this concept, we can determine the…

Q: 63. If a liquid vitamin preparation contains 0.16 μg of vitamin B₁2 per 5 mL, what is the ratio…

A: Concept based on the preparation of the solutions and their solute and solvent ration in terms of…

Q: Wt of precipitate (Silver chloride) MW of silver nitrate MW of silver chloride Meg silver nitrate…

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Q: Substance AG°F (kJ/mol) FeO(s) -255.2 H2(g) Fe(s) H20(1) Pb(s) -237.2 02(g) H2SO4(aq) PbSO4(s)…

A: The ΔG for the above reaction can be calculated as  ΔG0 = sum of (ΔGf of products X reaction…

Q: Cl2(g) + H₂O2(aq) → Cl(aq) + O2(g) (acidic) Match the words in the left column to the appropriate…

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Q: Wishing to record the "membrane potential" of a cell, Jane takes two electrodes connected to a volt…

A: A) 0mV If Jane touches the electrode tips against the plasma membrane on the extracellular side, she…

Q: Each of these reactant pairs may or may not react. If the reaction will happen, write the complete…

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Q: Whic‎h of the follo‎wing are eq‎uivalent to 2,5‎00 ppm Cu2+? (There may be more than one answer)…

A: Given data 2500 ppm equal to

Q: What interaction happens between a soda can and a charged PVC pipe. Explain.

A: A question to explain the interaction between a soda can and a charged PVC pipe.

Q: Classify the following transformations as either. a) an oxidation, b) a reduction, c) neither a…

A: The loosing of electrons is known as oxidation and accepting of electron is reduction .

Q: How long would it take to plate out 28.3 g of copper from Cu2+ using 12.5 amps?   115 minutes…

A: Given : Mass of Cu to be plated out = 28.3 g Ions of Cu present in the solution are Cu2+ ions. And…

Q: Given the Ksp for Ag2CrO4 is equal to 1.20 x 10-12, calculate the percent error in your…

A: It means the experimental value of Ksp is much more larger than that of actual value  Explanation is…

Q: In the following reaction which element got oxidized: 3HNO3 (aq) + Al(s) → Al³* + 3NO2(g) O a.…

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Q: what is another alternative for pcc to get oxidized.

A: To convert alcohol into aldehyde, we need weak oxidising agents which stops the oxidation reaction…

Q: Which is the reducing agent in the combustion of methanol? CH3OH+02 H₂O + CO₂ O a) 0₂ Ob) H₂0 c)…

A: Oxidation: It involves loss of electrons  Or Increase in the oxidation number. Or Addition of oxygen…

Q: Product: DRY SENSITIZED SOLAR CELL (a) How was it produced using nanotechnology? (b) What are the…

A: (a) A dye-sensitized solar cell ( DSSC, DSC, DYSC or Grätzel cell) is a low-cost solar cell…

Q: Explain why diamonds are useful for electrodes in batteries

A: Diamonds are useful for electrodes in batteries due to the listed reason:

Q: Which of the following substances are in their standard state? a. 02(g) b. Br2(g) c. N(g) d. H2O(s)

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Q: Directions: Predict whether the entropy change of the system is esch of the Sullowing io ACTIVITY 1…

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Q: Convert 2.5 Faradays to Coulombs.

A: We know that 1 Faraday =96485.34  coulomb. Hence now we have to find what will be the value of 2.5…

Q: The oxidation number of aluminum in Al³+ is

A: Oxidation state or oxidation number is a measure of the number of electrons that an atom has gained…

Q: How can washing plastic in warm water before recycling actually put more carbon in the atmosphere? C…

A: Plastics are polymers, which do not vaporize or evaporate on heating instead they melt and are…

Q: In the following chemical reaction, "M" represents an unknown metal that successfully replaces…

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Q: What is used to test for chlorine? * A a glowing splint B damp litmus paper O C limewater

A: what is used to test for chlorine has to be given,

Q: Drug Concentration A pharmaceutical companyclaims that the concentration of a drug in a…

A: The concentration of drug in a patient's bloodstream is calculated by the formula,…