Tritium H-3 has a half-life of 12.3 years. If a sample of 3 g of H-3 is produced, what will be the mass of tritium remaining after 24.6 years?

Q: Calcium phosphate (Ca3(PO4)2; MM = 310.18 g/mol), a large component of human bones and teeth, has a…

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Q: Calculate the hydroxide ion concentration in a solution with hydronium ion concentration of 1.77…

A: Hydronium ion concentration = 1.77 × 10-3  Or, [H3O+] = 1.77 × 10-3 We know, pH = -log[ H3O+]…

Q: 6. Consider the reaction X+Y→ Z Initial concentration (mol/L) Experiment X Y 1 0.1 0.5 2 0.2 0.3 3…

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Q: 13. A series of dilute NaCl solutions are prepared starting with an initial stock solution of 0.100…

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Q: nitrogen gasa t 0.4 MPa and 300 K. If the electric resistance is used to heat the cylinder by…

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Q: How many mL of 0.150 M Ca(OH)2(aq) will be required to completely react with 150. mL of 0. 100 M…

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Q: 4. Calculate the equilibrium concentrations of hydrogen & and iodine that result when 0.050mol HI is…

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Q: Draw the following organic compounds: a) 2-ethyl-4-methyl-2-pentanol c) 2-methylpropyl hexanoate b)…

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Q: The mass of metal deposited by the electrolysis of an aqueous solution of metal ions increases in…

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Q: Consider the structures below: How many is/are Lewis base? 0 HC1 BC13 CH₂OH O a. 5 O b.0 O c. 1 O…

A: Here we have to determine the number of Lewis base from the following given compounds.

Q: 2. A water tank contains 7.50 x 10³g water. Will the addition of 1.20 x 10³g ethylene glycol(C₂H6O₂)…

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Q: . Urea, (NH₂)₂CO is used as a fertilizer. What is the molar concentration & percent concentration by…

A: The mole of solute present in a one-liter solution is known as the molarity of the solution. The…

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A: Carbohydrates are generally hydrates of Carbon with general formula of Cx(H2O)y but this definition…

Q: Refer to the following standard reduction potential table as needed. Electrode reaction Eº, V Lit+…

A: Oxidising agent is the species which oxidises other species and reduces itself. Reducing agent is…

Q: 2. Ate Shawol and Concertina performed electrolysis to determine the identity of an unknown metal X.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 8. A 250.0 mL aqueous solution contains 45.1 pg of a pesticide. Express the pesticide's…

A: we need to calculate the concentration of pesticide

Q: Consider the reaction below. Identify the base and by what definition: BO H H-N-H H-O 0: H-N-H H O…

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Q: Draw the resonance structure of the following intermediates in the nitration of phenol: OH =

A: The Resonance  structure  are as follows.

Q: For each of the components of the solution, identify which is the solute and which is the solvent.…

A: Solution is a homogeneous mixture of two or more than two components whose composition vary upto to…

Q: When balanced, the coefficient in front of the H3O+(aq)  is: ___CH3COOH(aq)     +     ___ H2O(l)…

A: Which one of the following is correct

Q: (a) Construct a clearly labelled molecular orbital energy level diagram for an octahedral complex…

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Q: SAMPLE PROBLEM 8 A 1.000 g sample of an aluminum is dissolved, and the sulfate precipitated as…

A: Kindly get the answer given below.

Q: Ethyl iodide decomposes to give ethylene and hydrogen iodide in the first order gas-phase reaction…

A: Activation energy ( Ea ) can be found out using Arrhenius equation.

Q: BUFFERS, HYDROLYSIS OF SALTS 1. A 0.0250 M Ca(X)2 has a pH of 8.049. Ca(X)2 is composed of a Ca2+…

A: We are authorised to solve only first three subparts of a question. Please post rest of the subparts…

Q: What does the "alpha" indicate in "α-D-ribofuranose"?   It is the first anomeric form. The sugar…

A: Carbohydrates can be defined as the organic compounds that are present in food.

Q: Complete and balance the chemical reaction using method of half-reactions. Cu(s) + NO3-(aq)  ⇄…

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Q: Amino acid metabolism differs from that of carbohydrates and Fats in that " (a) There is no storage…

A: Amino acid metabolism differs from that of carbohydrates and fats in that = (a) There is no storage…

Q: 2. Write the product and the mechanism for reaction. Write the names of starting material and…

A: Here we are required to find the product of the reaction

Q: At 10.ºC, Kw = 1.14 x 10-15. What is the pH of water at 10.ºC? Choose the closest answer. 3.98…

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Q: Q Activity Chat Assignments Teams Calendar B Calls 19 Files 188 Apps 19 CHEM 20044_PS#1.pdf H,C H.C.…

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Q: Yok 6. What would be the best combination of alcohol and alkyl halide to produce the given compound…

A: Williamson ether synthesis is a well-known procedure for the formation of symmetrical and…

Q: c) What is the "order of stability"(most to least) of carbocations? Use the following list. methyl…

A: Tertiary Benzyl > Secondary Benzyl > Primary Benzyl > Secondary Diallyl > Primary Allyl…

Q: ANSWER ALL THE QUESTIONS BELOW What is the molality of a solid solution containing 1.576 g of iron…

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Q: The numbers of amino acid synthesized in our body * O (a) 20 O (b) 30 O (c) 40 O (d) 10

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Q: 1) What is the order of the reaction with respect to NO and respect to O2? 2) Write the rate law for…

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Q: Calculate the number of milliliter of ammonia whose density is 0.99 g/ml, 2.3% by weight NH, which…

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Q: The reaction. pyruvate + NADH+H. lactate + NAD* is catalyzed by the enzyme lacate dehydrogenase.…

A: If the concentration of Pyruvate is double then no effect will be shown because rate of reaction…

Q: If 38.5 mL of Ca(OH)2 solution of concentration 0.8 mol/L completely reacted nitric acid, HNO3, how…

A: Given, Volume of Ca(OH)2=38.5 ml  Molarity of Ca(OH)2=0.8 mol L-1 Moles of HNO3 = ?

Q: Consider a molecule of methyl methacrylate, shown above. If this molecule were to engage in hydrogen…

A: The hydrogen atom attached to the electronegative atom like fluorine, oxygen, or nitrogen gets…

Q: Place the following compounds in order of decreasing standard molar entropy Group of answer choices…

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Q: 3. Write the product and the mechanism for reaction: AICI3 오 la H₂C

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Q: 2. A water tank contains 7.50 x 10³g water. Will the addition of 1.20 x 10³g ethylene glycol(C₂H6O₂)…

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Q: 2. Joey was tasked to ensure that an enzyme responsible for keeping his species from extinction…

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Q: 4) Zinc oxide can be produced by the following reaction: 2 Zn (s) + O2 (g) 2 ZnO (s) - There are…

A: Given-> Surface area = 5500 cm2 For 1 cm2 surface required atom of Zn = 1.9 × 1020

Q: Consider the HCN-KCN buffer system, which species would react if a dilute aqueous HBr solution were…

A: Here we are required to find the species which would react with HBr.

Q: Which electron transition, 1 or 2 (shown above), would require the transfer of energy TO the atom…

A: According to the Bohr atomic model, in an atom, negatively charged electrons revolve around the…

Q: The reaction A → C + D is carried out at a particular temperature. As the reaction proceeds the…

A: We are given time and concentration of reactant at that time. We need to find the order of the…

Q: 1. Write the product, side products and the mechanism for reaction. Write the names of starting…

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Q: 1.1 2NH3(g) DH is negative (b) N₂ (8) + 3H₂(g) From the given reaction at equilibrium above, use Le…

A: Here we have to predict the direction of equilibrium by the change of the following factors in the…

Q: Description Solve the following problems 1. Calculate the percentage composition of C6H12O6 2.…

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