2. Zinc iodide (ZnI2) can be prepared by the direct combination of elements. A chemist determines from the amounts that 0.0654 mol ZnI2 can be formed. How many grams of zinc iodide is this?

Q: 1) 3-ethylhexane

A:

Q: An aqueous solution is prepared that is initially 0.100 M CdI4 2- . After equilibrium is established...

A: The solution is as follows:  

Q: Classify the following as pure substances-element, pure substance-compound or mixture. Write the ans...

A: Answer is as follows :

Q: 11. From the balanced molecular equations, write the complete ionic and net ionic equations for the ...

A:       To write a complete ionic and net ionic equations the following steps should be followed - 1. ...

Q: How many molecules are in 156 g of aluminum sulfate? 1. 2. What is the mass of 5.36 x 102² molecules...

A:

Q: 4. Classify each of the following reactions as one of these four types: • spontaneous at all tempera...

A: The solution is as follows:  

Q: ieer is H2(9)+I½(9) → 2 HI(g) At the temperature the engineer picks, the equilibrium constant K, for...

A: A chemical engineer is studying the following reaction: H₂(g) +I₂(g) → 2 HI(g) Q = [HI]2/[H2][I2] We...

Q: 3. Use reactions 1 and 2 to calculate Kc and Kp for reaction 3 at 800 K. Reaction 1: 2NO2(g) = N2(g)...

A: Given data :-

Q: Consider the following reaction at 298 K. C(graphite) + 2 H,(g) CH, (g) AH° = -74.6 kJ Calculate the...

A:

Q: 20.0 ml of 0.01 M HCl is added to    5. 6    ml  0. 10 M NaOH, the resulting pH of the solution will...

A:

Q: 7a. The reaction below is the chlorination of an alkane. There are four possible mono-chlorinated pr...

A:

Q: Solve equilibrium problems 2/5 A chemist is studying the following equilibirum, which has the given ...

A:

Q: COH2 H3C H,C-c Br H,C H3C H,C-ce :Br: + H,0 TS = TS = HO: d. CH3 H3C Br :Br: TS = TS =

A:

Q: How many moles of AgCls) will dissolve in 1.00 L of 0.100 M NaCN? What are the concentratio of the v...

A: Molarity = no. of moles / volume in litre

Q: Fill in the missing chemical formulae in the tables below. acid conjugate base base conjugate acid H...

A: The species that accept the hydrogen ion are conjugate acids and the species from which the proton i...

Q: Acid and base react to form water and salt. If 10 mL of 0.50 M NaOH is added to 10 mL of 0.26 M H2SO...

A:

Q: Provide an IUPAC name for each of the compounds shown. (Specify (E)/(Z) stereochemistry, if relevant...

A: Geometrical isomerism   Cis-trans (E/Z) isomerism also known as geometric isomerism, shows different...

Q: Calculate the pH of a solution that is 0.200 M in NH3 and 0.300 M in NH4Cl. Calculate the pH change ...

A: Kb = 1.75 x 10-5 Concentration of NH3 = 0.200M Concentration of NH4Cl = 0.300M Volume of buffer solu...

Q: In the process of chemical vapor deposition (CVD), a chromium compound in the gas phase is decompose...

A: Answer is option c - 2

Q: Why has magnesium citrate oral solution always been troublesome, and what is the cause of the proble...

A:

Q: Label these from most acidic (1) to least (5)

A:   Proton (H+) donars are acidic in nature  Acidity of phenols and carboxylic acid s  can be explain...

Q: Exactly 75.00 mL of a 0.3132 M solution of Na2SO3 were treated with 150.0 mL of 0.4025 M HClO4 and b...

A: Answer: This question is based on the stoichiometric calculation where we have to find out excess re...

Q: 2c. The molecule below is called Taxol and it is a chemotherapy medication Label the functional grou...

A: a.)  Reduction : Gain of Hydrogen or lose of oxygen is called as reduction.  Oxidation :  Gain of ox...

Q: 1. Calculate the pH of the following: a. [H*] = 1 x 10³ M %3D b. [OH]=1 x 10$ M C. [H]=1 x 107 M

A: Calculate pH of the given data---

Q: A. What is the pH after the addition of 180.0 mg of HBr? Express your answer using two decimal place...

A: Mass of HBr = 180mg  Mol. Mass of HBr = 81g/mol Mass of NaOH = 50mg Mol. Mass of NaOH = 40g/mol Assu...

Q: Which of the following statement is true for atomic mass of 39 19 K ? Group of answer choices   A.) ...

A: Which of the following statement is true for atomic mass of 39 19 K ?

Q: The presence  of   the   alkaline earth  group is observed by precipitation using         Select one...

A:

Q: Boyle's Law Wrap-Up Use the knowledge of Boyle's Law that you have gained from your reading and calc...

A:

Q: Draw the molecule 6-bromo-2,3-dimethylhex-2-ene (Lewis and line model please) I’m mixing something u...

A: Lewis’s structure: Lewis’s bonding theory is based on the octet rule. The Lewis structure is a simpl...

Q: 5) 5-sec-butylnonane

A: Draw the condensed and line bond structure of the compound--

Q: Which of the following is in a paraffin type? (A) C2H4 (B) CH4 (c) C3H3 D CH3

A:

Q: The heat of fusion of a sample of (polyethylene oxide) (PEO) was determined by DSC and turned out to...

A: Given that, the heat of fusion of a sample of (polyethylene oxide) (PEO) was determined by DSC and t...

Q: A chemist dissolves 158. mg of pure potassium hydroxide in enough water to make up 130. mL of soluti...

A: To find pH, the first step is to find the molarity of KOH solution and then calculate pOH from the O...

Q: In this particular problem, draw all possible resonance structures on your notebook. Based on your s...

A:

Q: Draw an important resonance form of the ion shown below. Interactive 3D display mode CH

A: Resonance structure: If the Lewis structure of a molecule or ion cannot explain by a single structur...

Q: Some crushed ice was placed in a 400 mL beaker. Some of the ice was allowed to melt before the tempe...

A: Given data :-

Q: A set of vapour pressures were measured at different temperatures for a particular substance. A plot...

A: Calculate the enthalpy of vaporization for this substance in units of kJ mol-1 ?

Q: Which of the following would be heterogeneous?      A mixture of sand and water.      A mixture ...

A: A heterogeneous mixture is a mixture with non-uniform composition or we can say it contains two diff...

Q: draw the condensed and line bond structure of the compound

A:

Q: Convert the following: a. 8.75 g of B2O3 to mol b.167.2 mg of Na2B4O7.10H2O to mol c. 4.96 g of M...

A:

Q: The combustion of propane produces carbon dioxide and steam.             C3H8(g)  +  5 O2(g)  →  3 C...

A: Propane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical ...

Q: H. Вос H. Вос `N PHOH2C H- PHOH2C- -H- Вос Но H- OH H CH2OPH H -CH2OPH Ph = .N. "Вос Вос 1 2

A: Given structures are :  Determine the relationship between compounds 1 and 2 = ?  

Q: The hydroxide ion concentration, [OH-], of an aqueous solution of 0.558 M triethylamine (a weak base...

A:

Q: The Kc value for the following equilibrium at 500°C is 49. H2(g) + I2(g) = 2HI(g) If 2.50 moles of H...

A:

Q: Write the expression for the equilibrium constant Kc for the following equation. 2Na2CO3(s) + 2SO2(...

A: Given :- 2Na2CO3(s) + 2SO2(g) + O2(g) ↔ 2Fe(s) + 2Na2SO4(s) + 2CO2(g)  To write :- Expression of Kc ...

Q: ne Diubility of which salt could be decrease g by the additio O NaCI O PbCl2 О КОН LICI O KNO3

A: The solubility of which salt could be decreased by adding KCl :

Q: H3CO OCH3 H* catalyst H20

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Q: 3. A metal crystallizes with HCP unit cell. Its density is 8.67 g/cm3 and atomic weight of 111.95 g/...

A:

Q: DRAW THE FOLLOWING COMPOUND:  Lactulose: galactose(β1 -> 4)fructose

A: Lactulose is a disaccharide formed from β-galactose and fructose.

Q: Given that: ΔHof [NO2(g)] = +34.0 kJ mol−1 ΔHof [NO(g)] = +90.0 kJ mol−1 What is the standard entha...

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.