Done r O Chemical Reactions Elemental analysis www-awu.aleks.com element mass % calcium 38.7% phosphorus 19.9% oxygen 41.2% 0 Measurements show that unknown compound Explanation : Write the empirical chemical formula of x. Check AA 5 I Terms of Use | Privacy Center | Accessibility

Q: What volume (in mL) of a 2.5 M NaOH solution is needed to prepare 500.0mL of a 0.10 M NaOH solution?…

A: As we know,Moles the solute remains same on dilution but volume of the solution increases.Dilution…

Q: Liquid X is known to have a lower surface tension and lower viscosity than Liquid Y. Use these facts…

A: Liquid X has lower surface tension and lower viscosity than liquid Y.Surface tension X <…

Q: 4. What is the sign of the entropy change for the following reactions? Explain you a. 2Ca(s) + 02(g)…

A: The objective of the question is to predict the sign of the entropy change for the given reaction.

Q: Shown below is a model of PCI, having an orientation in which one or more atoms are hidden from…

A:

Q: Identify the best conditions to complete the SN2 reaction shown below. -00 AKS Na Question 55 of 56…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: Provide good laboratory syntheses, using the starting makcials 95 talpad .CN of - - -) --> H your…

A: The question is based on the concept of organic synthesis. We need to synthesize the product using…

Q: 5.6 A 2.50 g sample of Ag2SO4(s) is added to a beaker containing 0.150 L of 0.025 M BaCl₂. (a) Write…

A: Given ,mass of Volume of Concentration of

Q: Which choice correctly represents the structure below as a wedge-dash structure with any/all…

A:

Q: Perform the following calculation and give an answer with the collect 50.9 x 0.0211.074 01

A: Significant figures are the number of digits in a value, often a measurement, that contribute to the…

Q: Q10) Predict the major product of the following reaction. Br Br2 . Br سم و رسم Methanol Br Br Br ОН…

A: This is addition reaction of alkene where cyclic brominium cation forms first. Then, the…

Q: In an MO diagram for the formation of H₂O in which the z axis bisects the H-O-H angle: The O 2p₂…

A: The molecular orbital is formed by the linear combination of atomic orbitals of the two atoms.…

Q: a particu andard conditions. 25 C₂H, (g) + O₂(g) → 8 CO₂(g) + 9 H₂O(g) - hat is the standard…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: 6. For each compound below, draw its two chair structures and circle the one that is more stable a)…

A: In a cyclohexane ring, if two substituents are present at axial position on carbon 1 and carbon 3 or…

Q: Draw crystal - field energy level diagrams for the d electrons for the following complex ions. Label…

A: For high spin either ligand should be strong or 3 d metals must have greater than +3 oxidation date…

Q: What is the standard molar entropy (Smº) of oxygen atoms at 298 K (assumed to behave as an ideal…

A: Entropy is defined as degree of randomness or disorderliness present in a molecule.  If a molecule…

Q: A student ran the following reaction in the laboratory at 636 K: 2HI(g)→ H₂(g) + 12 (9) When she…

A: Moles of HI introduced = 0.346 molesVolume of container = 1.00LConcentration of HI =

Q: Draw R and S configurations for the following compound. a) (CH3H₂C)C*(Br)(OH) (CH₂OH) four different…

A: A question based on molecules. The given molecule is to be presented in 3D and Fischer projections,…

Q: What is the product of the following sequence of reactions? ОН OH OH b) KMnO4/H* OH OH OH NaBH4 c)…

A:

Q: 7) Epoxidation T CH,COTH CH,COSH mCPBA mCPBA

A: The question is based on organic reactions. We need to identify the product and explain its…

Q: 7. The polymer polystyrene can be drawn in its long form in the two ways shown below.…

A: Polymers are a group of substances, both natural and synthetic, that consist of large molecules.…

Q: Cold packs take advantage of the fact that dissolving NH4NO3 in water is an endothermic process.…

A: Since, dissolution of NH4NO3 is an endothermic process, therefore heat will be absorbed during its…

Q: What is the total energy cost associated with the compound below adopting the shown conformation? O…

A: Conformers are stereoisomers that are converted into each other by a single-bond rotation. The…

Q: The ideal gas law, R, can be experimentally determined. Use the data provided below from the…

A: Answer:Here:

Q: 13. Determine whether an aqueous solution of zinc formate, Zn(HCOO)2 is acidic, basic or neutral?…

A: Answer:When salt of weak acid and weak base is added in water then both cations and anions gets…

Q: 3. Which two carbon atoms in the molecule shown below are most reactive with nucleophiles? a. A and…

A: The nucleophilic attack occurs at the electron deficient centre of the molecule and in the given…

Q: A Pt wire is immersed in a solution containing V2+ and V3+ at equal activities of 0.01000. This…

A: The given scenario involves a galvanic cell in which a platinum (Pt) wire is immersed in a solution…

Q: Consider the amino acid molecule shown below in a Fischer representation. Which of the following…

A: In D and L configuration, to represent optical activity of compound:D or Dextro configuration…

Q: 65. What is the major organic product obtained from the following reaction? I (CH3CH₂)₂CuLi -CH₂CH3

A: We have to draw the major product of the given reaction.

Q: Q3. Find the acetal carbon (that carbon which was the carbonyl carbon) in each of the following,…

A: We have to predict the alcohols and the acetal carbon in the given structures.

Q: Calculate the charge on cobalt in [Co (NH3)5Cl]CI₂. O +3 0 +2 0-3 0-2 0 +1

A: Complex = Charge on Co = ?

Q: n- m- PhyP=CHCH₂ AgNO, NH₂OH H H₂o CH₂MgBr

A: Given,The reactions:

Q: c) For the following compound identify how many chiral carbons present and how many isomers are…

A: Chiral carbon is carbon that has four different groups attached.It is denoted by *.Isomers…

Q: Glucose, C_(6)H_(12)O_(6), is used as an energy source by the human body. The overall reaction in…

A: The given mass of glucose = 63.0 g

Q: For the reaction N₂(g) + O2(g) → 2 NO(g), AH = 180.5 kJ How much energy is needed to generate 25…

A: Nitrogen reacts with oxygen to form nitrogen monoxide. The equation for the balanced chemical…

Q: Write the complete ground-state electron configuration of F™. For multi-digit superscripts or…

A: Aufbau principle: According to this, orbitals are filled in the increasing order of their energy.

Q: Calculate either [H,O*] or [OH-] for each of the solutions at 25 °C. Solution A: [OH) = 2.97 x 107…

A: Autoionization of water takes place as follows:In pure water, the concentration of hydronium ion and…

Q: The normal boiling point of mercury (Hg) is 356.7 °C. What is the vapor pressure of mercury at 340.0…

A: Given,The normal boiling point of mercury ( Hg ) = 356.7 oCThe vapor pressure at normal boiling…

Q: What is the vapor pressure of NH3 needed above a 4.00L aqueous solution to get 10.0 mol of NH3 to…

A: The relationship between the partial pressure (P) of the gas above the solution and solubility (C)…

Q: Which of the following combinations of and represent real orbitals and which are impossible? Drag…

A: Answer:Orbital is a space in an atom where probability of finding an electron is maximum. If we…

Q: Particle bullet Mass (kg) electron 0.00190 -27 alpha particle 6.64 x 10- 9.11 x 10 -31 Velocity…

A: de-broglie equation: Wavelength = h/mv h = planck's constantm = mass of particlev = velocity of…

Q: 2 Which molecule contains at least one sp hybridized atom? О BH3 O H2O OC₂H₂ CHA

A:

Q: What is the change in energy and activation energy for each?

A: The progress of a reaction can be represented by the reaction coordinate diagram. In a reaction…

Q: Which structure(s) are major resonance contributors for the intermediate that results when…

A: Resonance structures are sets of Lewis structures that describe the delocalization of electrons in a…

Q: Лион Na BH4 Draw Product

A:

Q: Problem 9.16 If dehydration with POCI3 and pyridine follows the Zaitsev rule and an E2 mechanism,…

A: An alcohol reacts with phosphorus oxychloride to give an alkene. This dehydration reaction occurs…

Q: Curved arrows are used to illustrate the flow of electrons. Use the reaction conditions provided and…

A: In the given question,   first of all protonation occurs then the nucleophilic attack happens at the…

Q: S -CH3 NO₂ HNO3 Br2

A:

Q: Q5. Prepare t a. b. C. d.

A: The conversion of aldehyde or ketone into olefins by treating with phosphorus ylide i.e. Wittig…

Q: Use the law of conservation of mass when considering the following. Consider a hypothetical reaction…

A: According to law of conservation of mass, mass can neither be created nor destroyed.

Q: Suppose that an exothermic reaction is at equilibrium. According to Le Chatelier's Principle, what…

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.