How many silicon atoms (Si) are contained in a 12.5 g sample of silicon? Molar Mass of Si = 28 g/mole

Q: he following reaction, 4.76 grams of nitrogen gas are allowed to react with 4.93 grami ogen (g) +…

A: Given,  Mass of N2 = 4.76 g Mass of H2 = 4.93 g Molar mass of N2 = 28 g Molar mass of H2 = 2 g Molar…

Q: if all of the following are in solid phase which is considered a non bonding atomic solid I2 Ne…

A: A question based on atomic structure that is to be accomplished.

Q: sunscreens protect your skin from reflect visible radiation and UV-B radia absorb UV-A, UV-B, and…

A: Electromagnetic radiation can vary in strength from low energy to high energy. These radiation…

Q: Setting Up Prepare a developing chamber by placing a folded filter paper length- wise in a…

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Q: 14. Which of the following compounds can act as an Arrhenius, Bronsted, and Lewis base? (a) H₂O (b)…

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Q: A 6.14-g sample containing only Mn2(SO4)3(s) and Al2(SO4)3(s) is dissolved in aqueous solution. The…

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Q: An unknown compound has the formula CH₂Oz. You burn 0.1095 g of the compound and isolate 0.2674 g of…

A: Given, Chemical compound has the formula: CxHyOz Mass of compound = 0.1095 g mass of CO2 produced =…

Q: The enthalpy of combustion for 3 moles of ethane at SATP conditions is negative Type your answer...…

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Q: Make an outline of the separation of the following cations into their respective groups:

A: a) Given cations: Mercury(I) =Group I Cd2+ = Group II(A) As3+ = Group II(B) Ba2+ =Group (IV) Na+ =…

Q: The data below are for water (H₂O) Melting Boiling Heat of point Point Fusion Heat of Vaporization…

A: (a) To draw the heating curve for water from -20°C to 150°C, given the  ∆Hfus (water)= 334 J/g∆Hvap…

Q: Choose the letter of the pair considered as ERRONEOUS/INCORRECT. N20 dinitrogen oxide CO2 carbon…

A: Given -> N2O  CO2 P5O9 CCl4

Q: Question 20 UV-A penetrates deeper into the subcutaneous layer of the skin than UV-B because the…

A: Answer: UV-A penetrates deeper into the subcutaneous layer of the skin than UV-B because former is…

Q: two different students on two different days determine the density of urine using the exact same…

A: Density of a sample is determined by the ratio between mass of the sample to the volume of sample.…

Q: Part III. Nomenclature of Organic Compounds Direction: Name the following hydrocarbons.

A: Given   Organic Compounds Find the Nomenclature

Q: Typical problem: Calculate pAgt for titration of 50.0 mL of 0.100 M Ag+ with 0.1000 M EDTA at pH…

A: The equation for the reaction between Ag+(aq) and EDTA4- or Y4-(aq) is: Ag+(aq) + Y4-(aq) ⇌…

Q: How many grams of iron (Fe) is contained in 15.8 g of Fe(OH)3?  Molar Mass of Fe = 56g/mole, Molar…

A: Molar mass of Fe(OH)3= 1(Fe)×56 +3(O)×16+3(H)×1= 107gm/mole

Q: 2. A compound has the following chemical formula; CuAl6(PO4)4(OH); 4 H₂O. Calculate the mass…

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Q: and pears) and is widely Malic acid is a diprotica Calculate the following f pH = [HC HO;]= [HC…

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Q: For many purposes we can treat ammonia (NH,) as an ideal gas at temperatures above its boiling point…

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Q: 30. امله 37. 38. N Br- سيح NH₂ CH₂CH₂CH3 ОН

A: Here we have identify parent group then substituent.

Q: For the cell shown, the measured cell potential, Ecell, is -0.3575 V at 25 °C. Pt(s) | H₂(g, 0.793…

A: In this question, we will determine the concentration of H+ ion  Given :  Ecell = -0.3575 V  And E°…

Q: 21. 22. O

A: IUPAC nomenclature is used for naming the organic compound as per recommended by international union…

Q: Choose the primary pollutants converted by catalytic converters into environmentally friendly gases.…

A: Pollutants are entity which when introduced in environment creates undesirable effect and harms the…

Q: How many Ca atoms are present in 28.55 nanograms of CaCl2?

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Q: o For the cell shown, the measured cell potential, Ecell, is -0.3575 V at 25 °C. Pt(s) | H₂(g,0.793…

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Q: Answer the following question: Are the following solutions isotonic, hypotonic, or hypertonic…

A: Given  a) Distilled H₂O c) 0.9 % (m/v) Na CI b) 1% (m/v) glucose d) 15 % (m/v) glucose

Q: Part III. Nomenclature of Organic Compounds Direction: Name the following hydrocarbons. 39. 40. 41.…

A: Name of the given hydrocarbon is given below :

Q: 2. A pair of substances undergoes a change. This change is observed in the form of a difference in…

A: The electromagnetic spectrum is a series of frequencies of electromagnetic radiation and their…

Q: Part III. Nomenclature of Organic Compounds Direction: Name the following hydrocarbons. 13. 14. 15.

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Q: You have been asked to determine the empirical formula of an iron(?) nitrate salt, Fe(NO). You weigh…

A: Given the mass of the iron nitrate sample = 4.1419 g  => (mass of iron) + (mass of nitrate) =…

Q: MULTI-STEP HEAT PROBLEMS The data below refers to an unknown substance, X. Melting Boiling Point…

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Q: Macmillan Learning In a particular redox reaction, NO is oxidized to NO3 and Cu²+ is reduced to Cut.…

A: Redox reactions are reactions in which one species is reduced and another is oxidized.

Q: +C=C-H + H₂O CH₂C=CCH₂CH3 HgSO4, H₂SO4 Na, NH3 2 equiv Br₂ (1) Sia₂BH.THF (2) H₂O₂ NaOH

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Q: Use the References to access important values if needed for this question. The compound zinc nitrate…

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Q: 3. I C E Set up [H₂S] = 1M, [CH4] =1.0M 2H₂S (g) + CH4(g) 5 [CS2]i = [H₂]i = 0 CS2(g) + 4H2(g) the…

A: 2H2S (g)    +    CH4(g)   ↔   CS2 (g)    +     4 H2 (g) Initial Conc. (I) 1 1 0 0 Change in…

Q: In the reaction of Carbon monoxide (CO) with Iron Oxide (Fe2O3), Carbon Dioxide (CO₂) is produced…

A: Given - Moles of CO= 1.5 moles  Moles of iron oxide= 3.8 moles  Moles of Fe=? Left moles of…

Q: Define/describe the following terms and give examples, where applicable: 1. Positron Emission- 2.…

A: Given  1Positron Emission- 2. Electron Capture 3. Half life 4. Nuclear fission 5. Nuclear fusion

Q: What mass of oxalic acid, H₂C2O4, is required to prepare 200. mL of a solution that has a…

A: Given -> Volume= 200 ml = 0.200 L (1L = 1000 ml)  Concentration= 0.45 M

Q: Part III. Nomenclature of Organic Compounds Direction: Name the following hydrocarbons. 27. 28. 29.…

A: A question based on nomenclature of organic compounds that is to be accomplished.

Q: C3H8 (g) + O2 (g) CO₂ (g) + H₂O (g) If 2.5 moles of O2 is consumed in the reaction, how many gr C)…

A: Number of moles is calculated by dividing the given mass with molecular mass. In the given question,…

Q: DIRECTIONS: Solve the stoichiometric questions based on this equation 4NH₃ +  5O₂  ? 6H₂O  +  4NO.…

A: We are given chemical equation: 4 NH3  +  5 O2    ------------->   6 H2O   +   4 NO

Q: 1. Write the balanced nuclear reaction equations for the following. Write the mass number, atomic…

A: Alpha decay : Alpha particles have two positive charges and a mass of four units, their emission…

Q: Macmillan Learning Using the data in the table, calculate the rate constant of this reaction. k= A+B…

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Q: When 5.225 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 16.39 grams…

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Q: Complete the fourth row of the table. Express the temperature in degrees Celsius to three…

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Q: when the following equation is balanced properly under basic conditions, what are the coefficients…

A: We are given an unbalanced equation  ___Ag2O + ___S2- ---> ___S + ____Ag we need to balanced the…

Q: The H/CO na in matures of carbon monoxide and hydrogen (rated synthesis gas) is increased by the…

A: Given             CO(g) + H2O(g) <----------> CO2(g) + H2(g)             Kc = 4.24…

Q: write the net ionic equation for reaction of sulfate ion with Ca(NO3)2

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Q: A chemist adds 175.0 mL of a 3.57 × 104 umol/L calcium sulfate (CaSO4) solution to a reaction flask.…

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Q: Part III. Nomenclature of Organic Compounds Direction: Name the following hydrocarbons. 30. plat 37.…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".