A student collected a sample of hydrogen gas by the displacement of water as shown by the diagram above. The relevant data are given in the following table. GAS SAMPLE DATA Volume of sample Temperature Atmospheric Pressure Equilibrium Vapor Pressure of H₂O (25°C) 90.0 mL 25°C 745 mm Hg 23.8 mm Hg (a) Calculate the number of moles of hydrogen gas collected. (b) Calculate the number of molecules of water vapor in the sample of gas. (c) Calculate the ratio of the average speed of the hydrogen molecules to the average speed of the water vapor molecules in the sample. (d) Which of the two gases, H₂ or H₂O, deviates more from ideal behavior? Explain your answer.

Q: which element is oxidized in the reaction below? Fe2+ + H+ + Cr2O72- --> Fe3+ + Cr3+ + H2O

A: Oxidation is loss of electrons or increase in the oxidation state.

Q: Calculate the heat of reaction AH for the following reaction: 2 CH₂(g) + 30₂(g) 2 CO(g) + 4H₂O(g)…

A: Heat of the rxn = sum of bond energy (Product - Reactant) kj/mol

Q: Which of the following abbreviated electron configuration is correct for the element or ion shown…

A: In given option, the only correct configuration is Cr+3 which is, Cr+3 = [Ar] 3d3

Q: For bonds formed between the same two atoms, as the bond order decreases, the bond length✓ [Select]…

A:

Q: Which of the following reaction is a correct procedure to prepare alkenes. a. b. C. a C Br OH Br a…

A: The given problem is based on the preparation methods of alkenes.

Q: The following IR and NMR were obtained for Alicia’s final product,…

A: We have to assign the NMR spectra.

Q: 7. Name the following compounds. auch! a. H3C- b. H3C- H₂H₂ OH C -CH3 H || Betae - CH3 ether c.…

A: To solve this problem we have to write the name of the given compound .

Q: Problem 20.61 A cell has a standard emf of 0.180 V at 208 K. ▼ Part A Y What is the value of the…

A:

Q: Consider the following reaction: H₂(g) + 12 (g) --> 2HI (g) Given the following data: H₂: AH° = 0…

A:

Q: a current of 3.25A is passed through a Ni(NO3)2 solution how long in hours would this current have…

A:

Q: Complete the nuclear equation for the alpha-decay of Th-232. Th-232 Complete the nuclear equation…

A: Complete the nuclear reaction such as alpha decay, beta decay and electron capture.

Q: What interactions are present between separate molecules in F2 in your picture? Select all that…

A: The force of attraction by which two atoms or two molecules combine to form a molecule or matter is…

Q: Although the Arrhenius and Brønsted-Lowry share some similarities, the two theories view acids and…

A: In the given question we have to identify the statement for Arrhenius theory and Bronsted-Lowry…

Q: A heating curve for the compound "benzene" is shown.  Which regions of the heating curve are where…

A: The heating curve generally has five stages, it shows us how a substance changes its state from…

Q: State the units of K corresponding to each of the rate equations below:   Rate = K [NO]2 Rate = K…

A: Rate = K [ Concentration] K = Rate /[Concentration]

Q: On a 12 day wilderness expedition you'll need to heat 3.0 kg of water to the boiling point each day.…

A: Water needed for 1 day = 3.0 kg The amount of water needed for 12 days expedition  = 12 ×3.0 kg=36.0…

Q: For the reaction shown, select the expected major organic product. A I B || Ⓒ III D IV V 11 III H₂…

A: Organic reactions are those in which organic reactant react to form organic products. In the given…

Q: Question 8 239 Pun → 136 Xe + 100 Zr +3/p 94 54 40 The reaction above is an example of nuclear A…

A: In nuclear reaction there is disintegration of large nuclei or formation of large nuclei .

Q: Protein A has a binding site for ligand X with a dissociation equilibrium constant of 4.0 x 10-8 The…

A: We can easily calculate the association equilibrium from the dissociation equilibrium constant. We…

Q: 6. Determine the pH of (a) a 0.40 M CH3COOH solution and (b) a solution that is 0.40 M CH3COOH and…

A: Answer:- This question is answered by using the simple concept of calculation of pH of a weak acid…

Q: A Ringer's solution contains the following concentrations of cations: 143 mEq/L of Na+, 4 mEq/L of…

A: The given solution contains sodium, potassium and calcium cation, and chloride anion. The charge of…

Q: A mixture of helium and argon gas is expanded from a volume of 45.0 L to a volume of 52.0 L, while…

A: we have to calculate the work done on the gas mixture

Q: isomers B-stereoisomers C- enantiomers 6- Which of the following is the most stable conformation of…

A: In chair form of cyclohexane, if two or more branches  present then more stable structure will  that…

Q: Calculate the pH of a solution prepared by mixing 0.0720 mol of chloroacetic acid plus 0.0280 mol of…

A: a) Given, pKa=2.865 Concentration =Molesvolume Concentration of Chloroacetic acid=0.0720 moles1…

Q: Classify the acidity of perchloric acid, HClO4, based on its reactivity in aqueous solution. Choose…

A: Perchloric acid is strong acid in aqueous solution. It dissociates in the form of H+ and ClO4-.

Q: 2. Give the best Lewis structure for the following, assign charges as necessary. Bolded and…

A: It is given that the central atom is nitrogen. So we will draw the structure so that lewis structure…

Q: What mass of precipitate (in g) is formed when 55.8 mL of 0.500 M AIBr, reacts with excess AgNO, in…

A:

Q: In an experiment, acid was added to two solutions: • Solution 1: distilled water only • Solution 2:…

A: • Here, two solutions are given. Solution 1 have distilled water only and solution 2 have the…

Q: What is the pH of a buffer prepared by mixing 5.0 g of ammonia (NH3) and 20.0 g of ammonium chloride…

A: Since you have posted multiple questions, we'll answer the first one. If you want any other question…

Q: Consider the following reaction for the combustion of octane, C8H18: 2 C8H18(l) + 25 O2(g) → 16…

A:

Q: Fill in the MO for peroxide:

A:

Q: What is the coefficient of the permanganate ion when the following equation is balanced? MnO↓ + Br¯…

A: we have to balance the given equation to find the coefficient of permanganate ion

Q: what is the conductivity of milk of magnesia?

A: Milk of magnesia, also known as magnesium dihydroxide or magnesium hydroxide, is a chemical compound…

Q: Reaction 1: 0 ОН + NaOH (3М) H₂N 1 4 ОН 7 A + ОН HCI (6M) H₂N НО OH 2 0= 5 8 ONa ОН B CIH3N 3 6 9

A:

Q: Which carbocation is the most stable? 1 Select one: O A. 2 O B. 3 O C. 1 + 2 3

A: Carbocation - Species of carbon which carry positive charge known as carbocation.  Any factor which…

Q: Write the name and draw the structure of a saturated hydrocarbon with four carbon atoms.

A: Saturated Hydrocarbon :  A saturated Hydrocarbon is one in which all of the carbons atoms are…

Q: A 27.0 g sample of glass, which has a specific heat capacity of 0.670 J.g¹°C¯¯, is dropped into an…

A:

Q: Draw a Lewis structure for NH4+. Based on this Lewis structure, the calculated value for the formal…

A: Since, Lewis structure can be drawn by calculating the valence electron present in outermost orbital…

Q: 5. List down the differences between graphite and diamond F

A: Graphite and Diamond both are allotrope of carbon. Both are crystalline in nature. Both has covelent…

Q: For a particular isomer of Cg H₁8, the combustion reaction produces 5108.7 kJ of heat per mole of Cg…

A: We have to calculate the standard enthalpy of formation of C8H18(g).

Q: Which bond is the most polar? Hint: Consider the electronegativity of each element. Br-Br O C-P B-O…

A: Correct answer - B-O  The electronegativity of elements are as follows  Carbon - 2.55 Phosphorus -…

Q: Which of the following is NOT TRUE regarding an SN1 mechanism? Select one: O A. Generally the…

A: SN1 reaction stands for Substitution  Nucleophilic First Order .

Q: Calculate the solubility at 25 °C of Ni(OH)₂ in pure water and in a 0.0150M NaOH solution. You'll…

A:

Q: Autoionization occurs when a neutral molecule ionizes into anion and a cation. Which of the…

A:

Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into…

A: ∆U = q + W  where ∆U = internal energy change  q = heat  W = Work

Q: I + II ||| IV

A: We know the stability of the intermediate which is carbocation in this case, follows- 1o<2o<3o…

Q: QUESTION 15 What is the major product of the following reaction? H3C. a. b. с. d. H3C H C H3C H C…

A: The given question is based on the chemical properties of alkynes.

Q: 3 Write equations to show the products that form in the reactions of cyclohexene with potassium…

A: When cyclohexene is treated with the bromine then it forms 1,2- dibromocyclohexane as the product…

Q: how about in synthesis of aspirin

A: Ethanol is used in synthesis of aspirin because :

Q: Which of the following reactions is a substitution reaction (Note: For each choice, only the organic…

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.