A sample of argon gas at a pressure of 863 mmHg and a temperature of 88° C, occupies a volume of 12.4 L. If the gas is cooled at constant pressure to a L. temperature of 41°C, the volume of the gas sample will be

Q: a. What is the crystal structure for MrDa? What is the theoretical density of a MrDa crystal,…

A: Ionic radius of cation Mr, rC = 110 x 10-3 nm Ionic radius of anion Da, rA = 180 x 10-3 nm The ratio…

Q: The partial pressure of water vapor in saturated air at 20 °C is 2.30x10 atm. (a) How many molecules…

A:

Q: Will entropy increase or decrease in the following reactions? Explain? N2(g) + 2O2(g) ------->…

A:

Q: 1. Two identical containers of the same amount and type of ideal gas follow different processes from…

A: The following points can be obtained from the given information: The gas used in both processes is…

Q: For the structures shown below, state the number of pi electrons present in the molecule. H H H H *…

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first image…

Q: At 298 K, the following reaction occurs 2 Fe³+ (aq) + Hg₂²+ (aq) = 2 Fe²+ (aq) + 2 Hg²+ (aq) a. What…

A:

Q: Use bond energies table to calculate AHan for this reaction: CH4 + 3Cl2 ⇒ CHCl3 + 3HCI

A:

Q: can 1,2-dibromobenzene and 1,3-dibromobenzene distinguishe by H NMR spectroscopy? describe number of…

A:

Q: When ammonia (NH3) is used as a solvent, the leveling effect will prevent the presence of bases…

A: All bases tend to become indistinguishable in strength when dissolved in Ammonia owing to the…

Q: Enter your answer in the provided box. Consider the reaction: 2NO(g) + O₂(g) → 2NO₂(g) Suppose that…

A: The change in concentration of the reactants or products in unit time is known as the rate of…

Q: CL ALC) 3 0°C

A:

Q: The three boxes below show the first order reaction AB and time increments. Calculate the rate…

A: The half-life (t1/2) for the first order reaction is given by the formula,  t1/2 =ln2k k is the rate…

Q: A student needs to dilute a 0.23 M Pb(NO3)₂ solution to make 53.0 mL of 0.14 M Pb(NO3)2. Set up the…

A: Given that  M1 = Initial concentration of Pb(NO3)2 solution= 0.23 M V1 =  Initial volume of Pb(NO3)2…

Q: Enter your answer in the provided box. A gas expands and does P-V work on the surroundings equal to…

A: Given----> W=  -259 j Q=  + 241 j ∆ U  =  q+ w

Q: A structure of tyrosine is given and I need to draw the structure for neutral solution, pH 2 and pH…

A: Tyrosine is an amino acid.

Q: Answer both images attached

A: ∆ H rxn = B. E of reactant- B. E of products

Q: Can you provide the answer?

A: we have to determine the hydrogen bonding behavior of the given 4 species

Q: In a hurry to complete the experiment, Anna withdrew some liquid (and quite possibly some solid)…

A: A limiting reactant is a reactant that is present in a lesser amount as compared to the other…

Q: Which of the following shows correct arrow placement that represents significant resonance for the…

A:

Q: Germanium can react with chlorine to form one of two possible compounds, one of which is GeCl2

A: Germanium is a P block element which belongs to group 14 or carbon family.

Q: A patient's body contains copper with a volume of 1.38×10-5 L. How many copper atoms does the body…

A:

Q: Which of the following is most likely to undergo an E2 reaction in acetone solvent? Br Br Cl C. TOH…

A:

Q: Draw a skeletal ("line") structure of this molecule: CH3 CH3 C CH₂- CH3 -C-CH3

A:

Q: Question 33 We would predict that the PCI 5 molecule would have a Moving to another question will…

A: The given problem is based on the geometrical shapes of the molecules.

Q: Would the following reaction be considered reversible or irreversible? i 1.十一天十 HO-S-OH HO- pka -9…

A: It is a reversible reaction .

Q: Determine pH at each of the following volume in the titration of 25 mL of 0.50 M HF with 0.50 M…

A:

Q: An unknown liquid has a heat of vaporization of 36.11 kJ/mole. If the normal boiling point is 89,…

A: We will use clausius clapeyron equation to solve this question.

Q: Calculate the concentration of metal ions, M³+, in a solution that initially contains 0.20 M M(NO3)3…

A: Formation reaction [M(CN)6]3- M3+ + 6CN- <--> [M(CN)6]3-

Q: 1. 2. H₂O+ ? MgBr Br AICI 3 ? NaBH4, MeOH ?

A:

Q: Calculate the molarity of the two solutions. The first solution contains 0.250 mol of NaOH in 1.70 L…

A: Molarity is defined as number of mole of solute divide by volume of solution in liter

Q: From the shape of your graph, do you deduce/conclude that (circle your chole a) the rate constant…

A: According to Arrhenius equation, k = Ae-Ea/RT ln k =ln A -EaRT A plot of ln k versus 1/T gives a…

Q: XOCI2, where X is an element with four valence electrons and an electronegativity of 2.4

A: Since the element has 4 valence electrons, the element corresponds to group 14. With an…

Q: Question 29 What ionic charge would you think most likely for the element Se? (You may want to refer…

A:

Q: Suppose you place equal amounts of 70.0°C and 20.0°C water next to each other in an insulated box…

A: Specific heat is defined as the quantity of heat required to raise the temperature of one gram of a…

Q: Question 2 of 7 View Policies Show Attempt History Current Attempt in Progress * Incorrect. 0/1 E…

A: The term "unsaturated" is used when the carbon atoms in a fat molecule do not have the maximum…

Q: If the mass of the baby is 9lb and 8.0 oz, how many kilograms does the baby weigh?

A: The conversion factors are  1 lb =0.453592 kg 1 oz =0.0283495 kg

Q: Consider the following chemical reaction: 2H₂O(1)→ 2H₂(g) + O2(g) What mass of H₂O is required to…

A: Balanced chemical equation: 2H2O (l) ----->  2H2 (g)  +  O2 (g) Number of mol of water = 2 x…

Q: The equilibrium concentration of hydroxide ion in a saturated magnesium hydroxide solution is that…

A:

Q: Consider the following Lewis structure where E is an unknown element: :0: :Ö-E- :O: :Ö: î 2- What is…

A: Lewis Structure is simplified representation of the valence shell electrons in a molecule. It is…

Q: 1. Name these compounds: a) EOH EOK* b) Br Br d) Br- Br- TOCH₂CH₂CH3 NHCH(CH3)2

A:

Q: Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C₂H6, and an unknown amount of propane, C3H8)…

A:

Q: From data found in appendix G, calculate the enthalpy of the following reaction: 2 PbO(s, yellow) +…

A:

Q: Li & H₂C-C CH3 2. H3O* 1.

A: In this question, we will draw the structure of the major organic product.  In this reaction,…

Q: What absorbance value corresponds to 41.0% T'? A = A 0.0148 M solution of a certain analyte exhibits…

A:

Q: ܂ 1. LDA 2. ܘ CI

A: LDA is a strong base. It removes the H atom from the α-carbon of carbonyl group to make Lithium…

Q: If a buret of 15mL of standardized 0.0024 M K2CrO4 was added to a clean 100mL volumetric flask and…

A: Concentration of CrO42- in the solution can be determined by considering dilution factor.

Q: Three kinds of matter are elements, and mixtures.

A:

Q: A sample of nitrogen has a volume of 4.14L at 1986 mmHg and 128 degrees Celsius. What volume will it…

A: Ideal gas law equation is the equation which obeys gas laws under all condition of temperature and…

Q: Calculate the pH of the following solution when the 2 reagents are mixed: 15.00mL of 0.550M KOH…

A: 15.00 mL of 0.550 M KOH are mixed with 50.00 mL of 0.225 M HF .We have to calculate the pH of the…

Q: Clearly provide the mechanisms for the following reactions. Your mechanism must show: O Proper…

A: The mechanisms of the reactions are given below -

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.