25.0 ml of a hydrofluoric acid solution of unknown concentration is titrated with 0.200 M NaOH. After 20.0 ml of the base solution has been added, the pH in the titration flask is 3.00. What was the concentration of the original hydrofluoric acid solution. [Ka(HF) = 71 × 10-4)

Q: Temperature is a measure of kinetic energy O heat

A: Temperature is a physical parameter which indicates the direction of flow of heat energy…

Q: conc. HCI H₂O 010

A: The first reaction is an example of a ring-opening reaction of the epoxide. The second reaction is…

Q: Data must be arranged either in ascending or descending order if some want to compute a. Mode b.…

A: Mean is defined as the average of a series of numbers.  Median is exactly the Middle number of a…

Q: Give the structural formula of the ff. compounds. Do not use the bond line structure Indicate the…

A: Given compounds are organic compounds as they contain carbon and hydrogen atoms. We have to draw…

Q: Idenhfy Tme false > mean speed wed in maxwell Speed dishibution is = 16RT)Y2

A: False.

Q: Cl₂ FeCl3 1. CH3MgBr 2. H3O+

A:

Q: a) A 555.0 g sample of liquid water is exposed to the light emitted by a nitrogen laser. Assuming…

A:

Q: Curved arrows are used to illustrate the flow of electrons. Follow the arrows to predict the…

A:

Q: Make sure I can see subscript

A: The balanced molecular reaction given is, => Pb(ClO4)2 (aq) + K2S (aq) --------> PbS (s) + 2…

Q: It says change in H is incorrect.

A: Excess of HCl means NH3 is limitting reagent and hence moles of product depends only on moles of NH3…

Q: 23 In Water-Lithium Bromide Vapour Absorption System of O a. Water is Absorbent O b. Thermal…

A: In the water lithium bromide vapor absorption system, we use a solution of lithium bromide in water.…

Q: H3C CI NaBH, CH3 AICI,

A: CH3COCl, AlCl3 ====> Friedel Craft acylation reaction NaBH4 ====> Reduction

Q: 4) Other Linearization Choices 0/2 poin When using x = 1/A, the meaning of the slope is hc. There is…

A: If  E = hcλ can be represented as y = mx straight line where m is the slope of the life If x = 1λ…

Q: 101 Chem 101 b My Questions | bartleby x Ghow many ml in a l - Googl x X (274) Tu Postura YouT X…

A: Given:Volume of solute = 389 mL.Volume of solution = 2.5 L = 2500 mL.

Q: 10): Me Et 11) Me Cl2 Me... HOSHH

A: As per bartleby guidelines we are supposed to answer only one question. So I have answered the first…

Q: Part G Interactive 3D display mode H3C CH3 Br

A: IUPAC rules: 1-Selection of maximum number of primary carbon chain.(Priority order-funtional…

Q: 1.03 2. DMS 3. MgBr 4. H₂O or H3O+

A: This problem is based on hydrocarbon . The problem is based on ozonolysis and further we have used…

Q: Predict the major products of this organic reaction. C* с с + T 1.03 2. DMS X Click and drag to…

A: Ozonolysis of alkene: In the ozonolysis reaction, the carbon-carbon bond of alkene has been replaced…

Q: migration c. Derivation of the formula for mobility of ion (u) d. Definition of the ion mobility for…

A:

Q: CE264 students prepared 55g of cement and 50mL of kerosene. They put the kerosene inside the le…

A: Here we are required to find the specific gravity of Cement

Q: 543.7 g + 568.45627 ml

A: We need to add two numbers with different significant figures.  In addition or subtraction of…

Q: Can you make a suggestion for a research topic about disaster risk? or any topic that can be…

A: Sure.

Q: ::&;;$(&;&;&;;

A: Step 1: Explanation: NBS, hv, is used for the allylic bromination of alkene. Allylic carbon is a sp3…

Q: The density of octane, C8H18C8⁢H18, is 0.703 g/mL0.703 g/mL. Calculate the number of moles of octane…

A: Given Data :  1.density of octane = 0.703 g/mL  2. Volume = 49.1 mL  Molar mass of octane = 114.23…

Q: The number of significant figures in a measurement depends on the Choose... of the instrument used.…

A: Number of significant figure shows sensitivity of the measurement. Greater the number of significant…

Q: Question 7: Balance the chemical equation in Figure 7 in acid medium. How many moles of sulphuric…

A:

Q: Student Z completes his/her calibration step for part 3 and finds an average mass, to be 95.237 g…

A: As per the guidelines, I am allowed to answer one question at a time. Please re upload the rest.…

Q: Please match. Pic 1 on the left: Pic2 on the left: Pic 3 on the left: Pic 4 on the left:

A: According to the valency, we can identify different atoms in the model of the molecules. The valency…

Q: 1. Absolute zero is the temperature at which all particle motion O stops. O decreases. O increases.…

A:

Q: Explain why (with chemical structures, keep word count below 20 words) 1. NaOH 2. OH 1. H30* N. R.

A: The question is related to finding out the mechanism.  Then finding out the stability of the…

Q: 13. If a 91.8 cm³ block o

A: Density (d) of a substance is equal to its total mass divided by its total volume   i.e d = M/V…

Q: Page NaH Br

A: NaH reacts with ether (R-O-R') to produce sodium alkoxide (NaOR').H- reacts with carbocation to form…

Q: YOur onswer wilh four decimal paces and enclose them a box Solve s neally an possible Messy work…

A: Step 1 Here a chloride ion is added in a solution containing 4.144g/L of Pb2+ and 1.088g/L of Ag+…

Q: Predict the major products of this organic reaction. Be sure to use wedge and dash bonds when…

A: Given : structure of reactant

Q: Be sure to show all work and circle the correct answer! 1. One can often estimate the density of…

A: Water(H2O) has 1 O and 2 H atoms. Since the volume of the 2 H atoms is neglected, we have to…

Q: I need help with question 2a please!

A:

Q: Determine the slope of the line.

A: Slope is represented by letter m Formula for calculation of slope(m):  When any two points(x1, y1)…

Q: Volume (Weight of sample (g) NxmEw Weight V. 100 Volume 1

A:

Q: Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as a primary…

A: Given : Mass of H2C2O4.2H2O titrated = 0.210 g And volume of sodium hydroxide i.e NaOH used = 27.3…

Q: show

A:

Q: P2V2 6) Given the equation rearrange it to solve for P, %3D nT, n2T2

A:

Q: When the temperature is lowered, the speed at which molecules move is slowed. O False True

A: We have been given a statement that  when temperature is lowered, the speed at which particles move…