We have got a number: 1,001.46 What is the 3 significant figures?

Q: 21. 100 ml of city drinking water was buffered at pH 10. after addition of indicator the solution…

A: Q.21)=> •Given:- •EDTA2- => Volume= 21.46 ml               =>Concentration(M)=5.140×10-3 M…

Q: 2. Draw the ¹H NMR spectrum of 1-Methoxyhexane and solve the structural formula. Then answer the…

A: Total 7 signals of 1H-NMR present.

Q: How is electrochemistry related to everyday life? Use examples.

A: Electrochemistry is branch of chemistry in which we deal with oxidation and reduction reaction…

Q: How is organic chemistry related to the field of nutrition and food? How are chemical compounds used…

A: Solution - chemistry substances play important role in food and nutrition. Everything surrounding us…

Q: Practice 3: Photochemical chlorination of the following molecule gave 4 monochlorinated products.…

A: To draw the structures of A, B, C and D. Two of them are 1º alkyl halides (A,B) while the others are…

Q: Find the altitude in feet at which the pressure is 14.41 in Hg.

A: Given Pressure = 14.41 in Hg

Q: For problem 8.17, all of the reactions will be SN2. For each reaction, identify and evaluate each…

A: Strong nucleophile : The nucleophile with high negative charge specially negative charge is on more…

Q: Sort the following units into the correct category: Items (9 items) (Drag and drop into the…

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

Q: 10 For the reaction A B- C to be at equilibrium, which statement must always be true? A) The rate of…

A: As we know, Equilibrium is dynamic in nature .

Q: 4. This is a CHOICE QUESTION: Show an organic reaction that would form the compound that is…

A: A carboxylic acid is an organic compound with a carboxyl functional group. They are extensively…

Q: Calculate the root mean square (rms) average speed of the atoms in a sample of argon gas at 0.15 atm…

A: Root mean square : Formula for root mean square average speed…

Q: 13. What is the conjugate base of HSO...? A) H₂O' B) OH C) H₂SO D) SO E) This compound does not have…

A: A conjugate base is formed when a proton is removed from an acid.  Means a conjugate base contain…

Q: Standardization of NaOH solution using KHP *MW of KHP = 204.22 g/mol Calculate for the concentration…

A: Molarity = (no. of mole / volume of solution in ml) * 1000   To calculate molarity of NaOH . volume…

Q: Calculate the molality of each of the following solutions: 583 g of H₂SO4 in 1.50 kg of water-the…

A: we have to calculate the molality for the given solutions

Q: 11. The ppm concentration of Cl-ion in 100 ml mixture solution of 0.01 M CaCl₂ and 0.1 M HCl is (MW…

A: In this question-11, we will determine the concentration of Cl- ion in ppm unit.  Where, given that…

Q: Which one of the following would have the highest molar heat of vaporization? H₂S SiH4 CH4 CH3NH2…

A: •Molar heat of vaporization:- Molar heat of vaporization is the heat absorbed by 1 mol of substance…

Q: Suppose a 250. mL flask is filled with 0.20 mol of H₂S, 1.1 mol of CS₂ and 1.2 mol of H₂. This…

A: Molarity is defined as number of moles of solute dissolved per liter of the solution. In the given…

Q: Given the following cell reaction: Zn(s) + Cu²+ (aq) → Zn²+ (aq) + Cu(s) a. Sketch the cell labeling…

A: This questions is based on Nernst equation E = E° - (0.0592 V/n)logQ at 298 K Since you have posted…

Q: Methane and water react to form carbon monoxide and hydrogen, like this: CH₂(g) + H₂O(g) CO(g) +…

A: According to Le - Chatelier if a system in equilibrium is subjected to change of concentration then…

Q: a. 0.0018 moles AgNO3 b. 0.12 moles NaCl C. 0.00350 moles KOH d. 0.0625 moles NaOH C. 0.045 moles…

A:

Q: 8H2S(g) + 4O2(g) → 8H2O(g) + S8(g) If Δ[H2S]/Δt = -0.062 mol·L−1·s−1, find Δ[O2]/Δt. Express your…

A: The rate of the formation of the product or the rate of disappearance of the reactants is known as…

Q: A certain substance X has a normal boiling point of 117.9 °C and a molal boiling point elevation…

A:

Q: 크 정 Z H-CFC1-CF2-0-CF2H. m Ои

A: There are some rules given by the IUPAC to name any organic compound. By following them we can write…

Q: 6- If 10.00 ml of 0.1M NaOH solution is needed to reach the end point of 10 ml HNO3. Then the…

A:

Q: A solution of 50.0 mL of 0.20 M H2SO4 is titrated with 1.0 M of LiOH. H₂SO4 + 2LIOH → Li₂SO4 + 2H₂O…

A: Given, H2SO4 + 2LiOH → Li2SO4 + 2H2O Molarity of H2SO4 solution = 0.20 M = 0.20 mol/L Volume of the…

Q: 5. Henderson/Hasselbalch Using the equation, calculate the amount of sodium acetate and acetic acid…

A: 5. Given,Volume of Acetate buffer = 100.0 mLConcentration of Acetate buffer = 0.50 MpH of buffer =…

Q: 14. A solution contains 3.25 x 10 moles of hydroxide ions per litre. What is the pH of the solution?…

A: We know , hydroxide ion = [OH-]             and,   pH+pOH = 14                 So, pH = 14-pOH and…

Q: A solution is made from 23.5 g of glycerin in 130 g of methanol at 50 °C. What is the mole fraction…

A:

Q: Draw a structural formula for the substitution product of the reaction shown below. Br CH3 CH3CH₂OH

A: Given : structure of reactant

Q: 7. A 0.6745-gram sample of KHP reacts with 41.75 mL of KOH solution for complete neutralization.…

A: Since, Molarity is the number of moles of solute dissolve in one litre of the solution. Thus,

Q: Air conditioners dry the air while they cool the air. Suppose an air conditioner is used to cool a…

A: Volume= 7.44m×11.53m ×2.62m  Temperature= 28°C  Vapour pressure of water=28.4torr  Partial pressure…

Q: Find the altitude in feet at which the pressure is 11.8 psi.

A: Here, P = 11.8 psi  Now, The given expression for atmosphere pressure is P = 14.7e-0.21a…

Q: Estimate the [O3]/[O] ratio in Chapman mechanism at 30 km with p=10 Torr, T=250K using the J values…

A: Part A Given: Temperature = 250 K Pressure= 10 torr Mixing Ration of O2= 0.21 [O2] = 0.21 M To…

Q: What kind of intermolecular forces act between a hydrogen bromide molecule and a hydrogen iodide…

A: Question is about what kind of intermolecular forces act between hydrogen bromide(HBr) and hydrogen…

Q: Rewrite this measurement with a simpler unit, if possible. gml. g g.mL-s Note: If you can simplify…

A:

Q: Suppose that 0.323 g of an unknown sulfate salt is dissolved in 50 mL of water. The solution is…

A: Given: 0.323g of unknown sulfate 50 ml water 6M Hcl The mixture us added by Bacl2 we are supposed to…

Q: 1. These reactions were conducted under similar reaction conditions but gave different products.…

A:

Q: Using standard heats of formation, calculate the standard enthalpy change for the following…

A: We know ∆H0rxn = (∆H0F)product - (∆HoF)reactant

Q: 7. Calculate AH for 2NO(g) + O2(g) N2O4(9), Using the following information: 2NO2 (g) N₂O4(g) 2NO(g)…

A: Since,According to Hess's law change of enthalpy in a chemical reaction is same regardless of…

Q: Nernst Equation A concentration cell is constructed of two hydrogen electrodes one immersed in a…

A: Given that, H++=1 MOH-=0.65 M

Q: Draw the expected major product for the following reaction. AICI 3

A: We have find out the major product of the given reaction.

Q: 4. This is a CHOICE QUESTION: Show an organic reaction that would form the compound that is…

A:

Q: Give the major organic product of the following reactions. CH₂CO3H CH₂Cl₂2 1 2 3 4 5 OH NaBH₁, EtOH…

A:

Q: b) In a laboratory investigation HNO3 into the neutralization reaction; KOH → KNO3 + H₂O a…

A: The heat released by neutralization = m×s×∆T m = mass  s = specific heat ∆T = temperature change…

Q: If you are given a chemical reaction and the measured amounts (in grams or mL) of all reactant(s),…

A: Solution - Theoretical yield is the amount of product that can be formed from given reactants by…

Q: (b) Show the conversion of 3.27 mL of isopropanol to a mole value. (MW isopropanol 60.1 g/mol,…

A: Given,  Volume of isopropanol = 3.27 mL  Molecular weight of isopropanol= 60.1 g/mol  Density of…

Q: a) N and O can exist in equilibrium with NO, as shown below. The equilibrium constant at 25.0°C is…

A: Moles of nitrogen gas = 1.25 mol  Moles of oxygen gas = 0.50 mol  Volume of vessel = 2.00 L…

Q: Typed answer solution needed only  No handwritten solution allowed

A: Alkenes shows the electrophilic addition reactions. Due to presence of pi-bond it act as the…

Q: Use the equation to answer the questions. Round both answers to nearest whole number. Y = 51.75 1.25…

A: •Given:-    Y = 51.75 - 1.25 X •Here we have to calculate value of X for given values of Y.

Q: 3) Of the following, AH,0 is not zero for a) O₂(g) b) C (graphite) e) N; (g) d) F2 (8)

A: Ans 13.  The standard enthalpy of formation will zero for an element or compound when present in…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.