How many protons and electrons are present in an atom of strontium (Sr)? ooo Protons = 38, Electrons = 38 Protons = 88, Electrons = 38 Protons = 88, Electrons = 50 Protons = 50, Electrons = 88

Q: A. What atom besides carbon and hydrogen is in this compound? B. Determine the chemical formula.…

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Q: 8 A chemist prepares a solution of sodium nitrate (NaNO3) by measuring out 41.7 μmol of sodium…

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Q: find the volume of 5.2  x 10 ^26 molecules of CH4 .  Find the volume of 56.0 grams of O2.

A: The volume of 1 mole of any substance is 22.4 L.  Similarly the no of molecules in 1 mole of any…

Q: When N₂(g) reacts with O₂(g) to form NO(g), 181 kJ of energy are absorbed for each mole of N₂(g)…

A: Here we are required to write the balanced thermochemical

Q: 1. For each of the corrected wavelengths you collected for your hydrogen electron data, calculate…

A: Given that, a table of the wavelengths of the hydrogen electron data is Corrected wavelength (m)…

Q: 3. Sodium sulfate is used in dyeing and printing textiles. A solution of sodium sulfate was prepared…

A: We have to use following formulasMoles=Mass of dissolved  Na2SO4Molar mass of  Na2SO4Molarity=Number…

Q: What is the 'H NMR splitting pattern of the indicated hydrogen? H si O triplet O doublet O quartet

A: Here we are required to find the splitting pattern of hydrogen indicated.

Q: 1. How many moles of water are produced from 4.18 moles of pentane gas, (CsH12)? CsH12 + 802 _, 5COz…

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Q: 2. Identify the functional group in each molecule shown below A) CH₂-OH B) CH OH | CH₂-OH ework 1…

A: There are various functional groups in organic compounds-  1- alcohol - the compound having -OH…

Q: chemist prepares a solution of aluminum chloride (AICI3) by measuring out 36.6 μmol of aluminum…

A: A homogeneous mixture of two or more substances is known as a solution. The species which present in…

Q: What is the ¹H NMR chemical shift value (in ppm) of the indicated hydrogen? ii 2.12 4.12 O 3.12

A: Chemical shift value :  X-C-H = 2 - 5 ppm  OCH2 = 4 - 4.5 ppm

Q: 2. Aluminum oxide can be used as an adsorbent, desiccant or catalyst for organic reactions. To…

A: We will calculate everything from the balanced reaction. we will initially convert the mass of the…

Q: what is the percentage yield of ammonia when 14.0 g of N2 gas reacts with 5.0 g of H2 to produce…

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Q: configuration? 8. Which atom has the greatest number of unpaired electrons in its ground-state…

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Q: Draw the Lewis structure for the acids H2SO4 and H3PO4—note that acidic hydrogens for oxyacids are…

A: In Lewis Structure valence electrons of each atom in a molecule are written, bond formed by each…

Q: ssign formal charges to each atom in the three resonance forms of SCN. :S-C=N: :S=C-N: S=C=N Which…

A: Formal charge is a hypothetical concept

Q: What is the potential? Fe³+3e¯ → Fe(s) (ac) Which would be the cathode and which would be the anode?…

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Q: A sample of ordinary table salt is 98.8% NaCl and 1.2% MgCl2 by mass. What is [Cl] if 6.85 g of…

A: This is simple problem of mole no. Here we first have to calculate the no of moles of NaCl and MgCl2…

Q: oxide in addition to gaseous carbon dioxide. What was die weight of 6g sample of impure calcium…

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Q: Pepto bismol contains 1225 mg of bismuth subsalicylate in every 35 mL. What is the weight/volume…

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Q: Calcium Chloride Ammonium Chloride   Trial 1 Trial 2 Trial 3 Trial 1 Trial 2 Trial 3 Mass…

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Q: Calculate the H3O+ ion concentration in a sloution having a pH of 4.40

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Q: A 5.298 g sample of a solid, weak, monoprotic acid is used to make a 100.0 mL solution. 35.00 mL of…

A: Let the weak monoprotic acid be represented as HA. The reaction between HA and NaOH is shown as-  HA…

Q: Osmotic pressure arises when ... Othere is an increase in the vapor pressure of a mixture, lowering…

A: We are to discuss how does the osmotic pressure arises in a solution. Osmotic pressure is a…

Q: Suggest a synthesis for the following alcohol starting from an aldehyde or ketone and…

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Q: An unknown gas has the following percent composition: 54.529%C, 9.1522 % H, and 36.319 % O. Vapors…

A: we have to determine the molecular formula of the compound

Q: 4. What are the IUPAC names of the compound shown below? A) B) D) CH3 I O || CH3-CH-CH₂-C-OH سلہ…

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Q: A solution has 2.42 mmol L-1 total phosphate (pKa = 2.1, 6.8, 12.4). If the pH of the solution is…

A: We need to use the Henderson Hasselbalch equation to calculate the concentration.  The given pH is…

Q: Suppose you burn a 2.0 g sample of potato chips. You use the heat given off from that process to…

A: Mass of potato chips = 2.0 g mass of water = 34.5 g Initial Temperature of water (Ti ) = 16.2 0C…

Q: If a biopolymer molecule is attracted to the partial charges found on the water molecule, the…

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Q: What is the 14C14C activity in decay events per minute of 1.0 gg of a 3000-year-old wooden object?…

A: We need to find the 14C activity in decay events per minute of 1.0 g of a 3000-year-old wooden…

Q: Mass of NaCl     __5.844______ g Total volume of solution    ___100______ mL Molarity of solution…

A: Molarity: The number of moles of a solute present in one liter of solution is known as the molarity…

Q: Consider the reaction: CH4(g) + H₂O(g)—3H₂(g) + CO(g) Using standard thermodynamic data at 298K,…

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Q: Calculate the potential of the electrochemical cell and determine if it is spontaneous as written at…

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Q: 31) What is the major product formed when the following compound undergoes &2 reaction 93 CH3 a)…

A: Given : structure of reactant Tip : In E2 beta hydrogen removes. Most substituted alkene is the…

Q: Consider the following chemical reaction at equilibrium: HF(aq) + H₂O(l) ⇌ H₃O⁺(aq) + F⁻(aq) If…

A: According to the Le chatelier's principal, " if any stress (change in pressure, temperature and…

Q: How many milliliters of water at 21 °C with a density of 1.00 g/mL must be mixed with 220 mL of…

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Q: How is it possible to produce solutions with similar pH values without using acetic acid  Explain…

A: Acetic acid, HC2H3O2 is a weak acid.  Sodium acetate, NaC2H3O2 is a conjugate base of the weak acid,…

Q: described by the following equations. Pvap. (mmHg), T (Kelvin) Pap.(CH₂CH₂OH)=10 Pvap. (H₂O) = e…

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Q: Which of the following is a polyatomic ion? NaCIO C1¹ CIO ¹ Cl₂06

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Q: Draw the structural condensed formula for 2- nitropropanoic acid.

A: These two compounds are simple organic molecules.  There are some rules we have to remember while…

Q: Draw three resonance structures for N2O (N is central) that follow the octet rule and assign formal…

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Q: Using the partial equations below, determine the enthalpy of formation of nitric oxide (NO). Hint:…

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Q: (use the "A" groups) Period Number of valence electrons Valence electron configuration 2s22p6 n or…

A: We will use the above table to discuss about the properties of atom in a same group.

Q: Use the known reactions to determine the ΔHrxn of the following reaction. C2H4(g) + Cl2 (g) →…

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Q: A. Determine the M+ peak (Which m/z peak represents the M+ peak). B. Determine the chemical formula.…

A: We need to calculate:  A. M+ peak B. Chemical formula, Degree of unsaturation. Functional group, if…

Q: Combustion of hydrocarbons such as heptane (C,H,) produces carbon dioxide, a "greenhouse gas."…

A: Answer: When Heptane is burned in the presence O2 it produces CO2 and water. In this question we…

Q: Calculate the energy emitted by a mole of hydrogen atoms that see their electron pass from level 5…

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Q: D. Draw stepwise mechanism for the given amide. You can use hydroxybenzotriazole (HOBt) or…

A: When a carboxylic acid reacts with an amine in presence of diisopropylcarbodiimide(DIC) it forms…

Q: Prelaboratory Assignment: Vapor Pressure of Water 1. The data below are for the vapor pressure of…

A: We can plot ln(P, mmHg) Versus 1T(K) by taking ln(P, mmHg) in Y-axis and 1T(K) in X-axis.

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.