. Explain both precision and accuracy as they pertain to chemical measurements.

Q: f) The electrical conductivity of silicon can be improved by doping with other metals. Determine the…

A: This is simple problem of semiconductor where we have to determine the type of the semiconductor if…

Q: 2.86 g of an ideal gas at STP occupies a volume of 1.00 L.  Calculate the molecular weight (g/mol)…

A: Given ->  Weight of ideal gas = 2.86 gm  Volume (V) = 1.00 L At STP-> T = 273 K  P = 1 atm

Q: Balance/complete the following chemical equations, and identify the type of equation. a. KClO3 =…

A: A balanced chemical equation contain equal number of atoms of each elements on both sides of the…

Q: Complete the following chart by writing "LEFT", "RIGHT" OR "NONE" for equilibrium shift, and…

A: We need to use Le-Chatelier's principle to know the change in given quantity .  According to…

Q: For the following chemical reaction, CO(g) + H₂O(g) → CO2 (g) + H2(g) K = 0.0257 What is the value…

A: Relation between Kp and Kc: Kp = Kc(RT)Δn Where, Δn = number of product molecules ‒ number of…

Q: A 10.0 L tank at 14.2 °C is filled with 19.3 g of sulfur hexafluoride gas and 3.57 g of dinitrogen…

A:

Q: b) Given acrylamide molecule. CH2: NH₂ i) State the number of sigma (o) bonds in this molecule. ii)…

A: Hybridization is defined as intermixing of orbitals of slightly different energy so as to…

Q: Enter the anode reaction for the oxidation-reduction reaction Zn(s)+2Ag+(aq)→Zn2+(aq)+2Ag(s) Enter…

A:

Q: 1a. Both filtration and reverse osmosis make use of a sieving material, differentiate the two…

A: Filtration and reverse osmosis are two types of separation techniques.

Q: A sample of gas occupies 748.7 mL, at 7.76 atm, and 152.4°C. How many moles are in the sample of…

A: Given, V = volume = 748.7 ml = 0.7487 L P = Pressure = 7.76 atm T = Temperature = 152.4+273.15 K =…

Q: The saponification of triglycerides and its reverse reaction of the condensation of fatty acids and…

A:

Q: Q3: The Figure shown a HPLC chromatogram of two compound.Calculate the following values using the…

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Q: A chemist dissolves 856. mg of pure barium hydroxide in enough water to make up 190. mL of solution.…

A: pH of barium hydroxide solution can be calculated from the concentration of hydroxide ions in…

Q: A solvent (molar mass = 98.2 g mol-¹) has a vapour pressure of 4930 Pa at 20 °C; at 50 °C this…

A: Clausius-Clapeyron equation: This equation relates the vapor pressures at two different…

Q: The heat of fusion AH, of benzene (C6H6) is 10.6 kJ/mol. Calculate the change in entropy AS when 7.2…

A:

Q: d. Arrange the next molecule in a chain CH₂OH OH ОН OH

A: The molecular formula of the compound given is C6H12O6.

Q: The elementary steps for a catalyzed reaction are shown below. Identify the catalyst? Identify the…

A: The elementary steps for a reaction are given as  H2O2 (aq) + I– (aq) → H2O (l) + IO– (aq)  IO– (aq)…

Q: What amount of energy is required to change a spherical drop of water with a diameter of 2.20 mm to…

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Q: How many moles of methane, CH4, are 8.5x1024 molecules of CH4? Enter your answer as a number to two…

A:

Q: Which of the following is a good buffer system? a. solution with 0,10M NaCl and 0.10MHC/ b, solution…

A: It is based on the concept of buffer.  Here we are required to find the solution which can form good…

Q: A gas vessel is attached to an open-end manometer containing a nonvolatile liquid of density 0.791…

A: Given that: Density of mercury = 13.6 g/mL Density of liquid = 0.791 g/mL Height difference of…

Q: The decomposition of N2O5 to NO2 and O2 is first order with respect to the reactant N2O5 and first…

A: A rate law shows how the rate of a chemical reaction depends on reactant concentration. For a…

Q: Question 8 - a) When boiling a pot of water, some of the energy is used to increase the temperature…

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

Q: Mercury and oxygen react to form mercury(II) oxide, like this: 2 Hg()+O₂(g)-2 HgO(s) At a certain…

A: According to the question, The reaction is as follows, 2Hgl + O2g → 2HgOs The mass of all species…

Q: 49.40 grams of Fe(NO3)3 are dissolved in enough water to prepare 550.0 ml of solution. Calculate the…

A: 1.) First we need to calculate the moles from given mass. Then using moles and volume we can…

Q: What is the pH of a 0.325M solution of NH4CI?

A: The concentration of NH4Cl = 0.325 M

Q: How many moles of HCl need to be added to 150.0 mL of 0.50 M NaZ to have a solution with a pH of…

A: The given solution is assumed to be a buffer of weak acid HZ and its conjugate base NaZ. The pH of a…

Q: Determine the pOH of each solution. (a) [H3O+] = 1.2 × 10-8 M (b) [H3O+] = 5.5 × 10-² M (c) [H3O+] =…

A: pH is equal to negative logarithmic of hydrogen ion concentration

Q: What is the equilibrium constant (K) at 25°C for the following cell reaction? Fe(s) +…

A:

Q: if you have the dissolution of Mg(NO3)2 will adding the following cause the salt to dissolve or…

A: A question based on solutions. A salt Mg(NO3)2 is prescribed for which the dissolution or…

Q: Define (using your own words): Coherent radiation Superposition principle Refractive index Ground…

A: Coherent radiation : Coherent radiation is defined as an Electromagnetic radiation in which two or…

Q: An unknown substance has a molar mass of  317 g/moles. The osmotic pressure of a saturated solution…

A: Given , Molar mass of unknown compound = 317gmol Osmotic pressure of the solution , π=0.641 atm…

Q: Name the following compound. CH3 CH3 CH3 CH₂ Spell out the full name of the compound. ECCH3

A:

Q: 3 iv) Given the molecule F, with seven valence electrons: 1 ay 40 = 8 Construct a completely…

A: This is a simple problem of M.O where we have to compare the bond length and strength using the bind…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 165.0 g sample…

A: We have been given initial temperature, final temperature, mass of sample and heat required to raise…

Q: Calculating the composition of a buffer of a given pH A chemistry graduate student is given 300. mL…

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Q: The decomposition of N2O5 to NO2 and O₂ is first order with respect to the reactant N₂05 and first…

A: First of all we will write rate law and we will use first order equation for time . All the value…

Q: How much energy is evolved during the formation of 4.5 moles of Fe, according to the reaction below?…

A:

Q: 3. Using 2-methyloxirane and 2-bromopropane as your only sources of carbon, show how you would…

A: Ring opening reaction of epoxide takes place in both acidic  and basic medium .It will give…

Q: 17. Give IUPAC names for the following alkenes. a. HX b. s

A: Since,Rule of IUPAC-1) Longest chain as parent chain.2) Numbering start from those side where more…

Q: Use the References to access important values if needed for this question A mixture of helium and…

A: Given -> Volume= 9.49 L T = 61°C = 61 + 273 = 334 K Weight of He = 0.631 gm Weight of Xe = 19.8…

Q: Imagine that you used isoprene as diene – in that case you don’t have to worry about assigning endo…

A: When a conjugated diene and an alkene (dienophile) reacts to form an unsaturated six membered carbon…

Q: Only one isomer of product is formed in the Diels-Alder cycloaddition. Why?

A: We have been asked to explain reason behind formation of only one isomer of product in Diels-Alder…

Q: Propose a suitable synthetic route to carry out the following transformations

A: The above reaction is the conversion of carbonyl group into -CH2 which can be done by reduction.

Q: In the Born-Haber cycle for each ionic species below, which would require you to multiply the Cl₂…

A:

Q: The function of a buffer is to change color at the end point of a titration maintain the pH of a…

A: Buffer solutions are those solutions whose pH do not change considerably on adding strong acid or…

Q: Describe the variation of first ionisation energy moving across Period 3, from left to right

A: Ionization energy is defined as amount of energy required to remove the most loosely bound electron…

Q: 10. 0.94 The base protonation constant K of ammonia (NH3) is 1.8 × Calculate the pH of a 0.94 M…

A: Given- Concentration of Ammonia= 0.94 M Kbof Ammonia= 1.8×10-5 pH of solution = ? To find

Q: A B H₂ NCH₂CH₂NH₂ CH3CH₂ CH₂NH₂ 1. Select the compound with greater surface tension: A or B? 11.…

A: Given compound -: A. H2NCH2CH2NH2 B. CH3CH2CH2NH2  Surface tension, Viscosity, Vapour pressure and…

Q: An element X exists as two isotopes - 88X and 90X and weigh 87.95 amu and 89.95 amu, respectively.…

A:

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.