Iron-59 has a half-life of 45 days. If 168 g of a radioactive iron (59Fe) is received in the lab today, what percentage of the original is left after 270 days?

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Q: Which structure is consistent with this ¹3CNMR spectrum? Feld In S S 60 40 20 0 200 180 160 140 120…

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Q: The mass of the average boysenberry is 0.28 ounces. The average Tesla weighs 4900 lbs. If one were…

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Q: What is the mass of 2.94 x 10 22 atoms of copper? 3.10 g 0.031 g 0.31 g 31.0 g

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Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O₂(g) → 2PbO(s)…

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Q: Write the formulae of all the compounds below that are highly soluble in water. Pb(NO3)2 Cay(PO4)2…

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Q: The standard enthalpy change for the following reaction is 641 KJ at 298 K. Mg(s) + Cl₂(g) AH° = 641…

A: Given -> MgCl2(s) ------> Mg(s) + Cl2(g) ∆H°= 641 kJ

Q: Calculate all the concentrations in equilibrium in a 0.4M solution of magnesium hydroxide magnesium…

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Q: A 2 3 3 LOH OH+SOCI, ridine SOCI₂ MgCl OH OH + PBry H.GO H₂O, acetone

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Q: Which of the two products will be the main product?. Se&. v 1 mmol + 1 mmol 1 mmo Br OH

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Q: Which of the following represent isotopes? 56 A: X 26 56 B: X 27 O A and D A and C O C and D B and C…

A: The given information is as follows: A: X2656               B: X2756             C: X2655…

Q: Choose the resonance structure that results from the arrow pushing scheme below: H سفی مشهد مع 00 O-…

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Q: Ⓒ Diaw structural formulas for the major organic products for XOH SOCI₂ CH b) 2) HO Hcl -OH HBr…

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