Which of the following pure substances has the lowest melting point? Group of answer choices LiF Li2O LiCl LiI LiBr

Q: Ionic compounds like CaCO3 contain polyatomic ions. Explain the formation of CaCO3 which contains a…

A:

Q: Based on the following graph, the number of base pairs of a DNA fragment that has migrated 25 mm is…

A: Log BP vs distance graph is given. In x axis, the distance migrated in mm is given and in y axis,…

Q: Consider the molecules of furan and benzene. The dominant Lewis structure of furan and the two…

A: Given that, the dominant resonance structures of furan and the benzene molecules are shown below We…

Q: ОН + ОН H3C- OTS + HBr NaCN/DMSO 0=0=0 -S-CI H2O

A: Since you have asked multiple questions in a single question, we would solve only first three. If…

Q: Referring to the following sketches of molecular orbitals obtained by combining the atomic orbitals…

A: Given : orbitals overlapping Tip : side way with different phase overlapping will form π2p* .

Q: 1 2 3 Calculate the formula mass (molecular mass) of the compound lead (IV) chloride, PbCl4? A.…

A: Since you've posted multiple questions, i will solve the first three questions for you. If you want…

Q: 3. Pepsin cleavage of the peptide Ala-His-Gly-Trp-Val-Ile-Arg-Gly would yield the peptides…

A: Pepsin is a enzyme which do cleavage of peptide bond in protein.  Argininosuccinate synthetase is…

Q: In the laboratory, a general chemistry student measured the pH of a 0.541 M aqueous solution of…

A: Given, pH of Aqueous solution of Hypochlorous acid = 3.875 Concentration of Solution = 0.541 M…

Q: Consider the molecule of Phosgene, COCI2. Its Lewis structure is: ( 2 What is the number of electron…

A:

Q: How many grams are in 3.01 × 1024 molecules of (NH4)2SO4?

A: Given,Molecules of NH42SO4 = 3.01 × 1024Required,                   Grams of NH4SO4 .

Q: Consider the molecule of Phosgene, COCI2. Its Lewis structure is: Bent Trigonal planar What is the…

A:

Q: (a) Assuming standard conditions, arrange the following in order of increasing strength as oxidizing…

A: Note- Since you have asked multiple questions, we will solve the first question for you. If you want…

Q: 15.10 For each of the following fatty acids, give the shorthand notation for the number of carbon…

A:

Q: 1. Determine the pH when 5.89 g of sodium acetate is dissolved in 190 mL of water. Ka of acetic Na +…

A:

Q: (b) Describe in brief the origin of isomer shift in Mössbauer spectroscopy. Fe²+ possesses a more…

A:

Q: The element selenium (Se) bonds with chlorine (CI) to make the formula SeCl_2. Chlorine is more…

A: we are given a chemical compound which is covalent nature and asked to name the compound

Q: Write two thermochemical reactions One for an endothermic reaction and another one for an exothermic…

A:

Q: 5. To which element does each of the following configurations correspond? a. 1s22s22p63s²3p4: b. 1s…

A: To answer the given question, we need to add the number of electrons in the given electronic…

Q: НО Н но НО- Н Н H ОН ОН H

A:

Q: Complete and balance the following redox reaction in acidic solution. Be sure to include the proper…

A: Since, In redox reaction, Oxidation and reduction reaction both takes place simultaneously.

Q: Which of the above sketches correspond to TT (pi) character MOS? Count both T and TT* as s…

A: Given : overlapping of orbitals  Top : side ways overlapping forms pi bonds.

Q: Which of the above sketches correspond to antibonding sigma MOS?

A: Given : overlapping of orbitals

Q: NaOH

A: The base will first abstract the proton from alpha carbon of the carbonyl, and it forms an enolate…

Q: QUESTION 5 How many grams of NaCl are needed if we want to make 6.688 moles of AgCl by the reaction…

A:

Q: Propose a reagent

A: In this question, we will provide a best reagent for this transformation.  The Best reagent is :…

Q: Write the name of the main constituent of biogas. Also state its percentage.

A: Bio gas is the gas that is produced by the decomposition of plant and animal waste. It is a…

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

A:

Q: ethanol is heated at 443 K with excess of conc. H2SO4. State the role of conc. H₂SO, in this…

A: Answer:- This question is answered by using the simple concept chemical reactions of ethanol in the…

Q: Temperature ometric pressure sure of water at hydrogen gas pro

A:

Q: Discuss the chemistry involved in Fe(H₂O) with H₂PO4

A:

Q: Explain why 1,6-diaminohexane can dissolve in water but decanedioyl chloride cannot. Suggest the…

A:

Q: 50.00 ml of a 0.0500 M Ni2+ solution, whose pH is adjusted to pH=11 and the solution is additionally…

A: The titration of 50.00 mL solution of 0.0500 M Ni2+ is carried out with 0.100 M EDTA solution while…

Q: n a mixture of Br2(g) and Ar(g), the partial pressure of Br2 (g) is 0.815 atm. If the total pressure…

A:

Q: 3. Which of the following sets of quantum numbers, do the following: i. If correct, draw an orbital…

A: There are four quantum number Principle quantum number Angular momentum quantum number Magnetic…

Q: The melting temperature of TNT (2,4,6-trinitrotoluene) is 80.83 °C, and its enthalpy change of…

A: Enthalpy change of fusion, ∆Hfus = 21.23 kJ/mol = 21230 J/mol (1000 J = 1 kJ) Melting point of TNT,…

Q: What is the maximum number of double bonds that a Carbon atom can form? 0 01 2 3 4

A:

Q: In a bisubstrate reaction, reactant A binds, followed by reactant B which then get converted to…

A: BISUBSTRATE REACTIONSWhen an enzyme catalyzes a reaction involving two substrates and yields two…

Q: Consider the molecule of furan. Its Lewis structure is shown. H H H. How many sigma (0) and how many…

A: Since, In the molecule, single bond known as sigma bond. If double bond is present in it contain one…

Q: Which of the following statements is true if K < 1? delta G° is negative The reaction is…

A:

Q: Identify the relationship between the following compounds. CH3 CH3 -Н -ОН -ОН НО Н- Н CH3 Н -ОН H-OH…

A: Given : structure of molecules  Tip : enantiomers are mirror image of each other  And diastereomers…

Q: The mass of the earth is 5.98 X 1024 kg. How many moles of gold would have this mass? How many moles…

A: Given, Note: 1 kg = 103 g mass of earth = 5.98 × 1024 kg = 5.98 × 1024 × 103 g = 5.98 × 1027 g a)…

Q: A flask is charged with 0.140 mol of A and allowed to react to form B according to the following…

A:

Q: For a certain chemical process, the addition of an acid and a base to a buffer must keep the pH in…

A: Answer:- This question is answered by using the simple concept of buffer solution. For the best…

Q: Be sure to answer all parts. The following reactions have the indicated equilibrium constants at a…

A:

Q: 6. Arrange the following atoms in order of decreasing size-largest to smallest (assuming all atoms…

A: As we move along the period atomic size decreases and as we move along the group atomic size…

Q: Write a balanced chemical equation for the standard formation reaction of solid water H2O

A: • We need to write a balanced chemical equation for the standard formation reaction of solid water,…

Q: For the first order reaction A→ products, [A] = 0.816 M initially and 0.632 M after 16.0 min. a)…

A: for the given reaction, we have to calculate  rate constant half-life time taken  final…

Q: How grams of C4H8 is needed to completed 30.00 Liter of oxygen gas

A: Combustion reaction of butene is as follows: C4H8 (g) + 6 O2 (g) →4 CO2 (g) +4 H2O (g) From the…

Q: without doing any calculations, match the following thermodynamic properties with their appropriate…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: student determines the value of the equilibrium onstant to be 3.67x10-18 for the following eaction.…

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.