Atoms are considered.. because theu have mass and other related properties.

Q: Jack measured the mass of an empty evaporating dish and watch glass, and weighed approximately 0.5 g…

A: To calculate the theoretical yield of KCl, we need to use the balanced chemical equation for the…

Q: Consider the following equations and data:  CH4(g)   +   2O2(g)    ------->     CO2(g)     +…

A: Given CH4(g) + 2O2(g) → CO2(g) + 2H2O (l) ΔH = - 890.4 kJ/mol  2H2O(l) → 2H2O(g) ΔH = +88.0 kJ/mol

Q: 24) The solubility of manganese hydroxide (Mn(OH)2) is 2.2 x 105 M. What is the Ksp of Mn(OH)2? A)…

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Q: Step 1: Formation of the nucleophile - tert- butoxide ion NaO-t-Bu + H2O → Na+ + OH- + O-t-Bu Step…

A:

Q: H. H H :Ö: H H H H Br Na O

A: E2 mechanism which refers to bimolecular elimination is basically a one-step mechanism. And here…

Q: Which of the following compound is consistent with the following 13CNMR spectrum? To preview the…

A: 13C NMR is the spectra given by carbon atoms.

Q: Calculate the molality of a solution formed by adding 3.00 g NH4Cl to 16.5 g of water.

A: Here, we have to calculate the molality of a solution formed by adding 3.00 g of NH4Cl in 16.5 g of…

Q: Draw a skeletal (line-bond) structure of (R)-2,3- dimethylheptane. Use a dash or wedge bond to…

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Q: Predict the reaction that occurs between these two chemicals: Z: H—CI : Write the reaction using…

A: -> pyridine has nitrogen which contains loan pair hence ,it can acts as base and can donate…

Q: Problem: The rate law for the reaction 2 H₂ (g) + 2 NO (g)→ N₂ (g) + 2 H₂O (g) is observed to be…

A: Rate law: The rate law describes how the rate of a chemical reaction depends on the reactant…

Q: The rate of disappearance of HBr in the gas phase reaction 2HBr(g) →H₂(g) + Br₂(g) is 0.130 M s-1 at…

A: Since, When we write rate law, we keep in mind that, Rate is equal to rate of appearance of reactant…

Q: For the following reaction, 6.79 grams of potassiu. hydrogen sulfate are mixed with excess potassium…

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Q: Consider the following unbalanced particulate representation of a chemical equation: Write a…

A: 1.Nitrogen represented by N and oxygen represent by  O . 2. Iodine is represent  by I and Fluorine…

Q: why is benzoic acid insoluble in pure water but soluble in NaOH solution

A: Benzoic acid is insoluble in pure water due to its hydrophobic (water-repelling) nature. The…

Q: A certain drug has a half-life in the body of 3.0 h. Suppose a patient takes one 250. mg pill at…

A: Given , mass of pill = 250 mg half life of drug = 3.0 h

Q: CH3 18. The AG for the 1,3 diaxial interaction of chlorocyclohexane is +2.0 kJ/mol and for methyl-…

A:

Q: Write the balanced formula, complete lonic, and net lonic equations for each of the following…

A: Here in the given question some chemical reactions are given.We have to provide the balanced…

Q: 19.2 Draw the major product for each rxn below.

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Q: Calculate the molar solubility of aluminum hydroxide in a solution buffered at pH = 6.75. Al(OH)3…

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Q: A solution is made by dissolving 0.540 mol of nonelectrolyte solute in 757 g of benzene. Calculate…

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Q: Calculate either [H3O+] or [OH-] for each of the solutions at 25 °C. Solution A: [OH-] = 1.49 × 10−7…

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Q: 3. The rate expression for a reaction is: rate = k [A] [B]. The temperature is held constant. The…

A: Given :  Rate(r) = K[A]2[B]  Temperature is held constant and [A] is halved.

Q: A 0.235 mL sample of carbon tetrachloride (density = 1.59 g/mL, MM = 153.81 g/mol) contains how many…

A: Find the number of Cl atoms present in given volume of carbon tetrachloride.

Q: 50.0 g of argon gas are diluted with 70.0 g of helium gas in a  579.0 L  container.  Calculate the…

A: Given values are , Mass of argon = 50.0g Mass of helium = 70.0 g Volume = 579.0 L = 579000 mL %(m/V)…

Q: A. For each compound, show the calculation of the number of total valence electrons, the number of…

A: In a covalent compound, the atoms are bonded to each other by a sharing of electrons. In a single…

Q: Benzene is a chemical compound in gasoline. When gasoline burns, the benzene reacts with oxygen. 2…

A:

Q: Using the VSEPR theory, predict that the shape of the carbonate ion, CO3²-. trigonal pyramidal…

A: Question is what is the shape of carbonate ion. CO32–

Q: 8. I. Consider the solubility graph below. II. Solubility (g solute/100 g H₂O) III. -20 160A 140+…

A: Saturated solution is a type of solution that has a solute concentration equivalent to its limit of…

Q: YOUR TASK: . Calculate the molar mass for glucose (C6H₁2O6) to use in your expression. • Setup…

A: No. of moles of a substance can be calculated by dividing the mass of the substance with Molar mass…

Q: What is the major organic product of the following reacti

A: The question is based on the concept of organic reactions. we need to identify the reaction taking…

Q: 5-54 Using VSEPR theory, predict the molecular geometry of the following molecules. a. :0: :0::N:0:H…

A: This question belong to Chemical Bonding and molecular structure. VSEPR Theory: lone pair occupy at…

Q: 11) In the coal-gasification process, carbon monoxide is converted to carbon dioxide via the…

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Q: Calculate the average activity coefficient of KNO3 in a solution of 0.004 M KNO3 and 0.076 M NaCl.

A:

Q: If a sample has an iron concentration of 0.0400 mg/mL, how many milligrams of iron are present in…

A: 1 mL  =  0.001 L  1 L  = 1000 mL   Thus,   0.1 L  =  100 mL

Q: 3. (2) What are the units of k in the following rate law if rate is measured in sec¹? Rate =…

A: Given rate law is : Rate = k[x]3[Y]3 , rate is measured in sec-1 We have to calculate the unit of k.…

Q: Consider the following reaction: 2H2O(g) + 2SO2(g) ⇌ 2H2S(g) + 3O2(g) A reaction mixture initially…

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Q: Use this data to rank the following solutions in order of increasing pH. In other words, select a…

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Q: NaOCH3 요 CHJOH OH OH IV

A: In first step of reaction NaOCH3 attack less hindered site of epoxides ring this is SN2 reaction

Q: Question 8 of 26 Write the basic equilibrium equation for HS. Be sure to include the proper phases…

A: The basic equilibrium for a weak base A- is written as follows: A¯(aq) + H₂O(l) = HA(aq) + OH¯(aq)

Q: Ph 5. Use this general reaction scheme to provide either the products or reagents for each reaction…

A: This question belong to reaction mechanism of organic compounds. LDA and NaH both are Strong base…

Q: 2. The synthesis of sodium chloride occurs according to the reaction: Na(s) + Cl₂(g) → NaCl(s) What…

A: At STP (standard temperature and pressure), the volume occupied by 1 mol of gas is 22.4 L. The given…

Q: 11. Consider other resonance structures for the compound shown. On which atoms can the positive…

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Q: 2. A chemist wants to be a supercook and wants to create an 8.0% (m/v) acetic acid solution as…

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Q: For the following C-H bonds (Ha, Hb and Hc) indicated below, choose which one would have the…

A: Answer: Smallest bond dissociation energy = Hb Highest bond dissociation energy = Ha

Q: What can you say about the relative strengths of the intermolecular forces before and after…

A: Intermolecular forces present between molecules are categorized into different classes based on…

Q: If a 0.830 m aqueous solution freezes at -3.30 °C, what is the van't Hoff factor, i, of the solute?…

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Q: This figure shows the MS2 spectrum of Epigallocatechin gallate (EGCG) with fragmentation. What is…

A: In Mass spectrophotometry, organic sample is bombarded with high energy electron source , thus one…

Q: answer all questions / parts

A: Through reduction with lithium aluminium hydride, amides produce primary amines while N-replaced and…

Q: -10³- 9) At 200°C, the equilibrium constant for the reaction below is 2.40 x10³. [0₂][N₂] 2NO (g) N2…

A:

Q: What happened after dropping distillate of 100°C in iodine and slowly dropping NaOH?

A: Iodine and NaOH when added to a compound which contains amethyl ketone or a secondary alcohol with a…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.