Consider isobars with mass number A=53, which is the one with least number of neutrons? Enter the atomic number of the element (edited) Find the number of neutrons in 118Cs.

Q: Determine the pH during the titration of 35.9 mL of 0.286 M methylamine (CH3NH₂, Kb = 4.2x10-4) by…

A: we have to calculate the pH of solution after given volumes of HClO4 is added

Q: The excess reactant doesn't appear to be correct. Is there another answer?

A: Answer: This question is based on the concept of limiting reagent. Limiting reagent is the reactant…

Q: Which does not have the same volume as 1.0 mol of N₂(g) at 1.0 atm and 15°C? a mixture of 0.5 mol of…

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Q: MISSED THIS? Watch IWE: Measuring AErxn in a Bomb Calorimeter, Read Section 7.5. You can click on…

A: ∆E of reaction can be calculated based on how much heat is absorbed by water and calorimeter.

Q: Give a clear handwritten answer with explanation..What is the concentration (in ppm) of nitrite in a…

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Q: Ammonia reacts with oxygen according to the equation 4 NH3(g) + 5O₂(g) → 4 NO(g) + 6 H₂O(g). If the…

A: The rate of the formation of the product or the rate of disappearance of the reactants is known as…

Q: MISSED THIS? Read Section 7.3. You can click on the Review link to access the section in your e…

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Q: How much work is done when a gas expands from an initial volume of 122 mL to a final volume of 175…

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Q: Pure magnesium metal is often found as ribbons and can easily burn in the presence of oxygen. When…

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Q: 30 mL of 0.2 M H2SO3 is titrated with NaOH. What is the pH when 15 mL 0.2 M NaOH is added?

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Q: Is the carbon labeled with an asterisk (*) a stereogenic center? Homework Unanswered Select an…

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Q: Propose structures for compounds of the following molecular formulas, using the spectra given…

A: Solution: For structure identification of any organic compound from its own molecular formula if the…

Q: What mass of natural gas (CH4) must you burn to emit 327 kJ of heat? CH4 (g) + 2O2(g) → CO2(g) +…

A: Heat emit = 327 kJ

Q: Which of the following examples are classified as either a solid-liquid extraction or a…

A: Solid-Liquid extraction: is a type of extraction process which is performed between the solid and…

Q: 4.) Provide mechanisms for the following reactions: + Br- CH3 CH3 CH3 CH3 AlCl3 CH3 of CH3 CH3 CH3

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Q: 6.) Synthesize the following molecules from benzene or toluene, and any alkyl halide if needed.…

A: Given

Q: If there are 5.00 g of CaCO3 in a flask, how many moles of CaCO3 are there?

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Q: Draw a structural formula for the intermediate in the following reaction CH-C₂ You do not have to…

A: The addition of bromine to an alkene in a nonpolar solvent produces vicinal dibromo alkane.

Q: Macmillan Learning Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric…

A: Limiting agent: The reagent which is in smaller in proportion compared to that shown in balanced…

Q: If you have 2.94 × 1027 atoms of silver, how many moles of silver do you have?

A: 2.94 × 1027 atoms of silver

Q: Hi! Could someone help me find the correct IUPAC names for these compounds and their…

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Q: ळ्भ भ

A: Given : structure of reactant. Tip : nucleophile attack on carbonyl carbon

Q: Determine the pH of a 0.352 M NaOH solution. O A. 13.54 O B. 12 O C. 0.352 O D. 0.45

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Q: IV III 0 11

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Q: can you please answer question #4 on th picture

A: #4: Net ionic reaction is written by canceling all the spectator ions and keeping only the reactants…

Q: A reaction of 34.3 g of Na and 38.9 g of Br₂ yields 47.5 g of NaBr. What is the percent yield? 2…

A: A question based on general chemistry that is to be accomplished.

Q: uestion 1: You are calculating ΔH and ΔS for what reaction? (Either provide the chemical equation,…

A: In this experiment procedure, we are determining the solubility of borax at ice temperature ( 5 °C)…

Q: Titration of 25.00ml of 0.100M I- with 0.0500M Ag+. Calculate pAg+ (=-log[Ag+]) at VAg+= 10.00ml;…

A: The Ksp equation of AgI(s) is: AgI(s) ↔ Ag+(aq) + I-(aq) ; Ksp = 8.3*10-17  The balanced titration…

Q: In the titration of a strong acid with a strong base, the pH of mixture after equivalence point is…

A: The correct alternative is option C [OH-] = ( NbVb - NaVa )/( Va + Vb ) & pH = 14 - pOH

Q: An IR spectrum of p-cresol is acquired. Select the region of the spectrum where the C-O stretching…

A: P cresol is also caled as 4-methyl phenol.

Q: Complete each nuclear fission reaction.

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Q: Determine the pH during the titration of 21.9 mL of 0.277 M perchloric acid by 0.206 M sodium…

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Q: Use the chemical equation below to answer the following questions: Fe2O3 (s)  +  3C (s)    2Fe (s)…

A: Here we have to calculate how many moles of Fe can be produced, how many moles Fe2O3 required and…

Q: A Chemistry student at Agora is calculating the average atomic mass of Potassium using the following…

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Q: 18. Predict this element based on the image:

A: For a given element : Atomic number = number of electron = number of proton Atomic mass = number of…

Q: Predict the polymer that would form from the following monomer unit:

A: Given : structure of monomer. Tip : repeat same unit

Q: Write the proton condition and acid/base mass balance equation for each of the following systems.

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Q: Determine the atomic number of the stable configuration of nuceli with mass number A=167?

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Q: Arrange the following compounds in order of increasing acidity or basicity. Give a brief reasoning…

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Q: A hydrogen atom in its ground state absorbs a photon with a wavelength (A) of 122 nm. In what energy…

A: Given that  A hydrogen in its ground state absorbs a photon of wave length (λ) = 122 nm The final…

Q: Determine the pH during the titration of 12.7 mL of 0.296 M hydrobromic acid by 0.174 M potassium…

A: we need to calculate the pH of solution at the given titration points

Q: Consider the decomposition of aluminum sulfide into aluminum metal and solid S₈ (one of the forms of…

A: Aluminum sulfide decomposes to form solid aluminum and sulfur (as S₈). The chemical reaction is:…

Q: Cr(s) Cr(NO3)3 A Voltaic Cell NaCl(aq) Pb(s) Pb(NO3)2 Cr³+ (aq) + 3 e¯¯ → Cr (s) E° = -0.41 V Pb²+…

A: Higher reactive metal can reduce the metal ion of lower reactive metal from its aqueous solution.

Q: 18 grams of Neon gas with a volume of 19 liters at 310K and expands isothermally against a constant…

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Q: How much water must be added to 75 mL of a 2.1 M solution to make a 0.57 M solution

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Q: For the following reaction, 46.0 grams of iron(II) chloride are allowed to react with 152 grams of…

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Q: Determine the critical cation to anion ratio (Rx/Rz) that separates cubic coordination (8-fold) from…

A: We need to look at the relative sizes of the atoms to see what occurs when one of the relevant ions…

Q: 3) How many molecules are in 120.6g of carbon? Show all your work.

A: The explanation is given below-

Q: The following pH curve is for the titration of 20.0 mL of a 0.10 M solution of a weak monoprotic…

A: The curve represents pH Vs volume of titrant (in ml).

Q: Determine the pH during the titration of 32.5 mL of 0.333 M ethylamine (C₂H5NH₂, Kb = 4.3x10-4) by…

A: Since you have posted a question with multiple sub-parts , we will solve first three sub-parts for…

Group 14 Elements

The following elements come under group 14 of the periodic table.