2Mg(s) + O2(g) ⟶ 2MgO(s) How many grams of O2(g) are consumed when 18.7 g of magnesium burns?

Q: 8 To prevent spoilage, food can be irradiated with gamma rays from Coblat-60 isotopes. The half-life…

A: Given that, The half-life of cobalt-60 is t1/2 = 5.3 years. The initial amount of cobalt-60 is a0 =…

Q: Draw the major product of this Claisen condensation reaction. Ignore inorganic byproducts.

A: A question based on introduction to organic chemistry. Diethyl succinate and ethyl butanoate are…

Q: Give the major organic product for the following reaction. CH₂-CH-CH₂CH₂ +--9 OH CH₂ CI CI CI…

A:

Q: 66. Use formal charges to identify the better Lewis structure. H H H-S-C-H H-C-S-H H H

A: We know carbon has valency 4 and sulfur has valency  2 .

Q: What is the equilibrium constant for the following reaction,  if [HBr] = 2.5 M,  [H2] = 0.5 M  and…

A: At equillibrium:  [HBr] = 2.5 M,  [H2] = 0.5 M  and [Br2] = 0.5 M Equilibrium constant,  K =…

Q: 19. Select the incorrect statement; a) The addition reactions occur more frequently in the alkenes…

A: Question 19 -->  Incorrect statement - (d) - Alkynes do not undergo polymerization

Q: A certain liquid X has a normal boiling point of 129.10 °C and a boiling point elevation constant…

A: elevation of boiling point is a colligative property. Here we are required to find the boiling point…

Q: The substance neon has the following properties: normal melting point: 24.5 K normal boiling point:…

A: A phase diagram can show the physical state of a substance under various circumstances.The…

Q: If 28.0% of a sample of copper-64 decays in 6.16 hours, what is the half-life of this isotope (in…

A: According to the first-order kinetics, the decay constant is given by: Where, a = initial amount of…

Q: Classify each chemical reaction: reaction Na₂S (aq) + FeCl₂ (aq) → 2NaCl(aq) + FeS (s) -> 2CH, (CH₂)…

A: We are given 4 reactions, and asked to classify these as the type of reaction to which they belong…

Q: 5.50 g of As₂O3 are titrated with 33.5 mL of KMnO4 to reach the end point. 5 As₂O3(s) + 4 MnO4 (aq)…

A: Given -> Weight of Ag2O3 = 5.50 gm  Volume of KMnO4 = 33.5 ml = 0.0335 L (1L = 1000ml)

Q: 3. Consider the following reactions of aldehydes and ketones, draw the main product for each F F &…

A: Given,

Q: The activation energy of this reaction is 145 kJ/mol 1450 kJ/mol 100. ks/mol 0.100 ks/mol and the…

A:

Q: What does the lattice energy tell us about in an ionic solid?

A: This question is based on Lattice energy

Q: hypothetical element (X) has an atomic mass of 114.9 g/mol and crystallizes with a Body Centered…

A:

Q: 2. Solid zinc reacts with a chromium nitrate solution to produce solid chromium and an aqueous zinc…

A: (a)  The balanced equations are   Zn + Cr(NO3)2 ---------> Zn(NO3)2 + Cr With Cr(NO3)4   2 Zn +…

Q: 2. Determine the molecular structure of the following alcohol: ¹H NMR spectrum of molecular formula…

A: To determine the molecular structure of the given alcohol.

Q: Which of the following aqueous solutions will not be more soluble under acidic conditions? A)…

A: Those compounds in which the anion is derived from a weak acid will be more soluble in acidic…

Q: 24. A water sample contaminated with MgCO3 (MM = 84 g/mol) has hardness value of 840 PPM What is the…

A:

Q: Calculate the boiling point elevation and freezing point depression of a 3.0 m solution of sucrose…

A:

Q: For each reaction below, write the following information: 1. The type of the reaction (SN2, SN1, E1,…

A:

Q: n = 3.5 moles of neon gas expand adiabatically, and in the process do 930 J of work. The temperature…

A: We have find out the answer.

Q: Identify the oxidizing agent in the following reaction. OH OH₂0 OH 00₂2 Ohydroquinone quinone R…

A: In this question, we will find out the oxidizing agent.  Two type of agent in the redox reaction one…

Q: In normal-phase chromatography, the stationary phase is Therefore, the eluent strength of the…

A: Normal Phase Chromatography - It is one of the separation method where the components are divided…

Q: Question 13 of 41 Using the equations - 2 Fe (s) + 3 Cl₂ (g) → 2 FeCl (s) AH = -800.0 kJ/mol Si(s) +…

A:

Q: Given 4 mols of the compound, what is the mol to mol ratio of O?

A: Given : Compound is : Ca4Si2O6(CO3)(OH)2  Number of moles of compound = 4 moles

Q: Consider the following table of Ksp values. Compound    Ksp PbCO3     7.4 x 10-14 ZnCO3     1.4 x…

A: The solubility product constant is the equilibrium constant for the dissolution of a solid compound…

Q: ) Which of the following statements is incorrect? About hybridization: a. Hybrid orbitals are…

A: Given is the statements about hybridization.  Asking is the incorrect statement?

Q: How can the following molecules be classified correctly? 1 II Multiple Choice II and III are…

A:

Q: Draw the product of this reaction. Ignore inorganic byproducts.

A: Given : structure of reactant Tip : NaNH2 is base it accept acidic hydrogen Terminal alkyne has…

Q: When absorption spectroscopy is used for quantitative analysis, concentration of the analyte is…

A: The concept used here is from photo chemistry.  We know that.  From Beer lambert law  Log I° / I =…

Q: Calculate the millinoles of HNO3 in 2.4ml of 8.0 M HNO3

A: Given, The molarity of the HNO3 = 8.0 M = 8.0 mole/L The volume of the HNO3 = 2.4 ml The moles of…

Q: The following chemical reaction takes place in aqueous solution: ZnBr₂(aq) +2 KOH(aq) → Zn(OH)₂(s)+2…

A: In net ionic equation ions and molecules that are autually involved in reaction are present

Q: A phase diagram for elemental carbon is shown below. How many triple points are present? Pressure…

A: Triple point in the phase diagram of elemental carbon is the point where carbon can exist in three…

Q: How much heat (in kJ) is required to warm 10.0 g of ice, initially at -14.0°C, to steam at 111.0 "C?…

A: Given reaction and thermodynamic data

Q: Draw the Lewis structure of BrCl3 and then determine the ideal bonding angle(s) of the central atom.…

A: Bromine is of group 17 element so it must have 7 valence electrons and Cl is a monovalent atom so it…

Q: 4930 20) An unknown compound has the chemical formula C4H3O. It's IR spectrum and ¹H NMR spectrum…

A: Molecular formula- C4H8O IR hands - 2950, 1730

Q: 26. a. b. C. d. e. Which of the following statements are true when temperature increases? I only II…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: It is observed that Ni, with an atomic mass of 65.9291 u, decays by emission. Identify the nucleus…

A: When the number of neutrons in the nucleus exceeds the number of protons, beta minus particle (β-)…

Q: For each of the following synthesis, draw the products that would be formed A-D. CI HNO3 H₂SO4 A 1.…

A: The nitration of chlorobenzene gives both ortho and para products. The major product is para Chloro…

Q: Which of the following statements is true? a. All antibonding MOs are higher in energy than the…

A: we have to determine the true statements with respect to antibonding molecular orbitals

Q: 72. What are the formal charges of the atoms shown in red? :Ö: CH3-S-CH3

A: Formal charge is the charge assigned to an atom of a molecule.  Formula for formal charge is:…

Q: If a solution has a [H+]=1 x 10 -3 M, what is the pOH of that solution? Group of answer choices 11…

A:

Q: Given the following reaction: NaOH   +   HCO2H   --->   H2O   +   HCO2-   +   Na+ If you had equal…

A: We are provided a chemical reaction of a strong base sodium hydroxide with a weak acid acetic acid.…

Q: A galvanic cell is powered by the following redox reaction: Br₂(1) + H₂(g) + 2OH(aq) 2 Br (aq) + 2…

A:

Q: The first excited state of Ca is reached by absorption of 422.7-nm light. (a) Determine the energy…

A:

Q: What is the pH -determining equation for 0.010 M NaCl?

A: Given : NaCl = 0.010M  Tip : For salt pH = 7

Q: Chlorine has a critical temperature of 144°C and critical pressure of 77 atm. Under which of the…

A:

Q: 16: Calculate the heat change when 27.9 grams of water at 78 °C is heated to 136 °C.

A:

Q: 10.6 Propose a reasonable organic reaction mechanism for the reaction shown below using the curved…

A:

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".