An unknown sample weighing 5.06 g was dissolved in 307 g of ethanol (Kf = 2.0 K kg mol-1). The freezing point of the solution was found to be 1.36°C lower than that of pure ethanol. Determine the molar mass (g/mol) of the sample.

Q: NaOH Lot la = ora H + Me -H₂O 2 3 MeO EtO 4 EtOH, NaOH reflux, 1 h Me MeO EtO MeO 5 Me

A:

Q: A mole of perfect monoatomic gas is expanded adiabatically and reversibly from 1 bar and 300K to 0.1…

A: Entropy is defined as the measure of degree of randomness or disorderliness. ∆S is called change in…

Q: What is the molarity of a solution that was prepared by dissolving 16 g of sodium hydroxide in 320…

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

Q: A 0.8970 g sample of a mixture of NaCl and KC1 is dissolved in water, and the solution is then…

A:

Q: Label the conjugate acid-base pairs in each equation. A. HI + NH3====NH4+ + I- B HCOOH + H2O ===…

A: Acid : the substance that donates H+ ion in an aqueous solution.  Base ; the substance that accepts…

Q: Gold-198, a B emitter used to treat leukemia, has a half-life of 2.695 days. The standard dosage is…

A: Given, Half life of gold-198 = 2.695 days

Q: PROBLEM F.9 Draw the molecules that correspond to the following IUPAC names. (a) Pentyl pentanoate;…

A: Given Pentyl pentanoate We have to draw the structure of the above compounds According to the…

Q: How many moles of neon occupy a volume of 14.3 L at STP?     32.0 moles     6.45 moles     36.7…

A: Molar volume of gas at STP is 22.4 liter

Q: what about this?

A: We have to tell whether the given compound is Methyl-4,4-dimethyl-3-oxopentanoate. Introduction: NMR…

Q: Type of Reaction 6. Chemical Equation For Reaction Name: + HCI Name: Class: CH3 7. H3C-C=CH-CH3 +…

A: These reaction can be explained as:

Q: Provide an acceptable name for the compound shown below. Spell out the full name of the compound.

A:

Q: A mole of an ideal gas is compressed isothermally at 298K. If the gas is compressed from 1 atm to 10…

A: ∆Ssystem = qsystem/T = nR ln (V2/V1) P1V1 = P2V2 P1/P2 = V2/V1 ∆Ssystem =nRln (P1/P2) n = number of…

Q: Consider the molecular structure for linuron, an herbicide, provided in the questions below. H Which…

A: Hybridization is a concept by which how a element form bond with others is explained, Here…

Q: X Br₂ Hot Br Br

A: -> when Diene reacts with Br2 there is formation of two products . At low temperature kinetic…

Q: CaCO3(s) → CaO(s)+CO2(g)CaCO3(s) → CaO(s)+CO2(g)      Calculate the value of the equilibrium…

A:

Q: The emission of quinine is observed to increase as the pH increases from pH 2.5 to 3.75 but is then…

A: The structure of quinine is-

Q: When a 29.4 mL sample of a 0.442 M aqueous acetic acid solution is titrated with a 0.394 M aqueous…

A: we have to calculate pH at mid point of titration

Q: Determine the oxidation states of all elements in the following chemical species ĐKH K: H: b)…

A: Given compounds: a) KH b) Cl2O c) Na2Cr2O7 d) HNO3 e) H2SO4 We have to find the oxidation number of…

Q: The results of your Solubility of a Salt experiment led to the following linear regression equation:…

A: We would use the linear equation for solubility and compare it with the given equation to calculate…

Q: A mole of an ideal gas is compressed isothermally at 298K. If the gas is compressed from 1 atm to 10…

A: We need to find the entropy change of the given isothermal compression at 298 K. The gas is…

Q: What would an NMR of Mesitylene (1,3,5-trimethylbenzene) look like

A: We have to explain the NMR spectra of mesitylene

Q: When a 100 mg NaCH3COO is dissolved in 1.00 L pure water at 25 °C, the resulting solution's pH is?

A: Given - Mass of NaCH3COO = 100 mg Volume of water = 1.00 L Temperature = 25°C

Q: A chemist prepares a solution of vanadium III bromide   VBr3   by measuring out 0.75g of VBr3 into…

A: we have to calculate molarity of Br−

Q: When the following molecular equation is balanced using the smallest possible integer coefficients,…

A:

Q: I mix 10.0 ml. of CaCl2 0.10 F with 10.0 mL. of Na2SO4 0.10 F, what % of the CaSO that forms…

A:

Q: A student needs to prepare a buffer made from CH3COOH and CH3COOK with pH 5.016. If K₂ for CH3COOH…

A:

Q: CH₂OH C=O CH₂OPO DHAP Triose phosphate isomerase H C O HCOH I CH₂OPO G-3-P Under standard…

A:

Q: For the following compound, circle and assign absolute configuration to the chirality centers. Draw…

A:

Q: 1.) A solution is prepared by mixing together 75.00 mL of 0.150 M Pb(NO3)₂ and 50.00 mL of 0.925 M…

A:

Q: Which starting material will promote the following reaction? O О ??? H3C.. m-CPBA Ан H CH3 насид H H…

A: These reaction can be explained as:

Q: 3. For each of the following compounds, indicate the total number of valence electrons - VE, draw…

A: We need to determine  A) Total valence electrons B) Draw Lewis structure C) Calculate bond order D)…

Q: Using the figure below, calculate the minimum mass of potassium nitrate required to form a saturated…

A: First we need to find the solubility of potassium nitrate at 20°C.  Using they solubility and given…

Q: 1. Draw the structures. 2-propylpentanoic acid cis-1,3-cyclopentanedicarboxylic acid m-chlorobenzoic…

A:

Q: the entropy change of the universe

A:

Q: Suppose a student uses a wet Erlenmeyer flask to hold their soda sample. How will this affect the…

A: Erlenmeyer flask is also known as a conical flask or a titration flask and is a type of laboratory…

Q: НО, HO 0 +

A: This reaction is Diels-Alder reaction because Diene compound react with dienophile on heating…

Q: Calculate the slope

A: To calculate the slope, we need to plot the given data . On x-axis concentration and on y-axis…

Q: 6. What is the sum of the partial charges on all the atoms in nitrate?

A:

Q: Complete this statement: "The bonding between atoms within a water molecule is called A. The…

A: Introduction to a water molecule Covalent bonds between hydrogen and the more electronegative oxygen…

Q: In the following acid-base equilibria of weak acids in water, label the acid (A), the base (B), the…

A:

Q: Draw a line structural diagram for 5-chloro-2phenylhex-2-ene

A: From the name of the given compound we need to check the parent carbon atom chain . Then from prefix…

Q: What is the wavelength, in nm, of an H₂ molecule (3.32 x 10-27 kg) traveling at 5.19 x 10³ m/s? Do…

A: The wavelength of such microscopic particles moving with certain velocity is given by de-Brogliee…

Q: Aspirin, which is acetylsalicylic acid, was the first NSAID use to alleviate pain and fever. If a…

A:

Q: Which radiation has the lowest frequency? O X-rays O Ultraviolet O Red light O Blue light

A: Given :-  X-rays  Ultraviolet  Blue light  Red light   To identify :- light with lowest frequency

Q: Draw the Lewis structure of CH3CCH and then choose the appropriate set of hybridization states for…

A:

Q: Acetic acid (HC,H,O,) is an important ingredient of vinegar. A sample of 50.0 mL of a commercial…

A:

Q: An unknown has a chemical formula of C4H10O. When chromic acid was added to the unknown, it turned…

A: A chemical formula is given and we have to tell it's structure.

Q: For the galvanic (voltaic) cell Cd²+ (aq) + Fe(s) → Cd(s) + Fe²+ (aq) (E° = 0.0400 V), what is the…

A:

Q: Draw the Lewis structure of XeCl, and then determine the hybridization of the central ator •xe Click…

A: Given :- molecular formula = XeCl2  To draw :- Lewis structure and also determine the hybridization…

Q: What functional group is at 763ppm? For HNMR at about 2.3ppm is it a quintuplet? How do I get the…

A: Given that, the molecular formula of an unknown compound is C3H6Br2. We have to answer the following…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.