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1. could u pls give me example of substances has an activity of 1? is it pure water has an activity of 1?
2. is pH scales is strictly btw 0 and 14? if not, why?
3. what is CSTR? is this heterogenous? is this concentration depends on location?
4. is steady state, mass can enter ot not? leave the control volume or not?
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- 1.A vial of 133Xe gas is calibrated at 22 MCI at 6 a.m. on March 1st what is its activity at 6 p.m. on March 8th 2.51 Cr sodium chromate standard solution contain 15 uCi/ ml when it was produced. What is the activity per ml 60 days later? 3. A vial of generator eluate contains 432 MCI immediately following elution. How many MCI will remain 8 hours later? 4.131 I sodium iodide capsule was calibrated for 7.3 MCI at 12 pm on May 1Oth. If the half life is 8.05 days, what will be the capsules activity at noon on May 23rd?2. Radioactive cobalt-60 is used extensively in nuclear medicine as a y-ray source. It is made by a neutron capture reaction from cobalt-59 and is a B-emitter; B emission is accompanied by strong y radiation. If the half-life of Co-60 is 5.27 years: a. How long will it take for the Co-60 source to decrease to one-eighth of its original amount?C. Salt bridge D. Walden reactor E. None of the above 4
- BIUA 29 Russo One Zinc and sodium hydroxide react to produce sodium zincate and hydrogen gas. (Do you which lab reacted zinc with sodium hydroxide?) 3=========== a Type of Reaction: Na,ZnO, ) H NaOH (aq) 1) Zn (s) 10. Aqueous As" ions react with hydrogen sulfide gas to produce arsenic trisulfide as a sol and hydrogen gas. Arsenic trisulfide is also known as the mineral orpiment, which was used as a yellow pigment. Type of Reaction: As (1) HS ( As,Sa H 11. Magnesium silicide reacts with hydrochloric acid to produce silicon tetrahydride and m chloride. Silicon tetrahydride is also known as silane, which combusts spontaneously in of oxygen. =====: Type of Reaction: Mg,Si SiH MgCl, HCI 1. [+] 12. Magnesium ammonium phosphate (MAP) decomposes to magnesium pyrophosphate. and water. Type of Reaction: Mg.P,O, + NH, + H,O MBNH,PO, 1) 13. Heptane (a major component of gasoline) buns in oxygen to produce carbon dioxide Dvee of ReactionThe stability const.(formation const.) of EDTA is (ionization const.) is 8.35 x 10-22. -- when the instability const. O 0.12x10 22 8.35 x 10 22 O 1x 10 22Given a solution containing 0.010 M CaCl2 and 0.020 M MgCl2, what is the activity of Ca2+? A. 0.034 B. 0.0034 C. 0.020 D. 0.47 E. 0.010 F. 0.34
- Calculate the activity of 103 in a saturated solution of La(103)3 in water. 1.0 x 10-11 Kap : а. 2.0 х 103 b. 1.7 x 10-4 С. 2.7 х 10-3 d. 1.2 x 10-3 е. 3.9 х 103 f. 4.8 x 10-4ter Community College + 3k2SOu How mony g of Nizlso.). are fraduct f 19. 95 NYNG, reacts!The separation of uranium and plutonium by TBP is the key aspect of nuclear fuel reprocessing. If the measured distribution ratio for a plutonium/TBP extraction D(Pu)= 10, what is the value of the equilibrium constant (K) for the extraction equation given that the concentrations are [HNO3] = 2M and [TBP] = 0.5M. Pu4+ + 4NO3- + 2TBP → Pu(NO3)4TBP2
- [8] A sample of 0°K (t1/2 = 32 s) is to be used in a study of a patient's respiration. How soon after its creation must it be administered to the patient if the activity must be at least 60 % of the original activity?← X A ALEKS - Tanvi Damle - Learn X 505 Missing Women.pdf xb Answered: A mixture of gaseou x | + с www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-lgNslkr7j8P3jH-lJjnzw4vpUz2lYCcR4NM7yr_lpMriNwxObE81fpfEarvknu9yVpdR16koytlCYH-ZAJTB3axbOp6jJjf_zb7sl8YueB... THERMOCHEMISTRY = 1/3 Tanvi V Understanding the definitions of heat and work 1 atm pressure A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The cylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The cylinder is also submerged in a large insulated water bath. (See sketch at right.) From previous experiments, this chemical reaction is known to absorb 298. kJ of energy. gases The position of the piston is monitored, and it is determined from this data that the piston does 212. kJ of work on the system during the reaction. Is the reaction exothermic or endothermic? exothermic endothermic x10 up down X Does the…-k col MISSED THIS? Read Section 6.7 (Pages 235-238); Watch IWE 6.12. Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s) + 302(g) → 2Al2O3(s) esc Mother to Son &....pdf A 1 da FI Q A 1 N 2 귀 F2 W S X option command # w 3 80 F3 Ш E D 64 + $ 4 C T a F4 R 20 Part A What volume of O₂ gas, measured at 768 mmHg and 26 °C, is required to completely react with 55.0 g of Al? Express the volume in liters to three significant figures. [5] ΑΣΦΑ 1 Provide Feedback V= Submit F % er de 5 FS V Request Answer H T G MacBook Air ^ 6 FG Y B & M 7 H 8 F7 U N ? * 8 L J DII FB 1 ( 9 M DD K FO O O command .