How many moles of atoms are in 74.0 g of phosphorus?

Q: An aqueous solution is prepared by adding 16 g of NaCl and diluting to a volume of 100 ml. The…

A:

Q: K₂Cr₂O₂ + NaNO₂ H₂J04, Cr³+ + NO 3+ Ka Cr₂O₂+ FeSO4 2 2 KI + HNO3 Haso -> Cr³+ + Fe ³ -) I ₂

A:

Q: Is the following compound able to undergo hydrogen bonding? H-C O N(CH3)2 A) Yes, it can hydrogen…

A: There are various types of intermolecular hydrogen bonding exist between molecules such as hydrogen…

Q: 13.18 Identify each of the following as D or L: Η. 0

A:

Q: what are compounds in a sentence?

A: A compound clause or sentence is a clause that joins two independent clauses, usually using a…

Q: In a 6.00 L pressure cooker, water is brought to a boil. If the final temperature is 115 °C at 4.05…

A: Ideal gas equation.                                            PV = nRT.    Here n is mole

Q: If an unknown element X has a large difference between its seventh and eighth ionization energies,…

A: From the given information about the ionisation energy we would determine the group of element. Then…

Q: How much solute is required to prepare each of the following solutions? (a) grams of C6H12O6 for…

A: We have to calculate the mass of solute required to prepare the solution

Q: 1. Balance the following redox reaction in acidic solution: MnO4 (aq) + Fe²+ (aq) Mn²+ (aq) + Fe³+…

A:

Q: An atomic anion with a charge of −3 has the following electron configuration: [Ne] 3s 3p6 What is…

A: Phosphorus has 15 electron and 15 proton. It becomes P-3  after adding three electron.

Q: 2 CoCl2(aq) + 8 NH3(aq) + H2O2(aq) + 2 NH4Cl(aq)  2 [Co(NH3)5Cl]Cl2(s) + 2 H2O(l) In a 50-mL…

A: We first convert the reactant to moles. and we will determine the limiting reagent. after finding…

Q: 1. Complete the following reactions by writing missing reactant(s), reagent(s), or product(s). i.…

A: In the above reactions the starting materials, reagents and reaction conditions are provided. So we…

Q: O CO₂Et This reaction involves an intramolecular aldol reaction followed by a retro aldol-like…

A: Mechanism of the given reaction.

Q: A 1.00-L container was evacuated, and 0.01 mol of NO and 0.01 mol of Br2 were placed in the…

A: Answer: Ideal gas equation will be used to solve this question which is shown below: P=nRTV Here:…

Q: 1 2 3 4 2NO₂(g) = N₂O(g) + heat Stresses Applied to an Equilibrium System 5 6 increase temperature 7…

A: According to Le Chatelier's principle, when any stress is applied to a equilibrium condition then…

Q: 1. Dr. Dahm is attempting to store a sample of HI. Little does he realize that there exists an…

A: First we need to balance the equation and use the given initial pressure to draw an ICE table. Then…

Q: How many types of bonds are present in ethane? In ethene? In ethyne? What type of isomers is shown…

A: Types of bond Type of isomers in butane Type of isomers in C2H6O

Q: Write equations for the formation of each salt. Write if the salt is, acidic, basic or neutral

A: we can predict whether the salt is acid, base, or neutral depending upon how salt is made Salt made…

Q: If NH3 is a base, what is its conjugate acid? A NH4+ B. NH4 C. NH2- D. NH2

A: Bronsted acid is one which can donate H+ , and Bronsted base is one which can accept H+ .

Q: Br

A: Since CH3CH2O- is a strong base, and the alkyl halide is a secondary alkyl halide, E2 elimination…

Q: How many o and π bonds are in the following molecule?

A:

Q: How many valence electrons are in Sn²+?

A:

Q: Is the following molecule soluble in water or benzene? :O: || C CH₂ ÖCH3 A) Water B) Benzene

A:

Q: list the following ionic compounds: CsCl, ScN, MgO, LiCl, in order from smallest to largest lattice…

A: Lattice energy can be calculated by the born linde equation. and according to that :-

Q: 11) The molarity of a solution prepared by diluting 43.72 mL of 1.005 M aqueous K2Cr2O7 to 500. mL…

A:

Q: DEET, C12H17NO, is the active ingredient in many insect repellents. If you want to produce 25.0 mg…

A: Answer: This question is based on stoichiometric calculation where we have to convert the moles of…

Q: Based on the information in the table, how much heat is needed to melt 10 g of ethanol? A B C D 0.01…

A:

Q: Salt to He the following on SU 8. Which conditions would alw in an increase in the internal energy…

A:

Q: Prompt2: Find the f.p. of a saturated solution of NaCl containing 28 g of Nacl in 100 mL o water.…

A: Freezing point of saturated solution of NaCl = ? Volume of water = 100 mL Mass of NaCl = 28 g…

Q: What is the expected hybridization of the central atom in a molecule of Til4? This molecule is…

A: he have to determine the hybridization of TiI4

Q: Which of the following molecular geometries exhibits the smallest bond angles? planar triangular…

A: Bond angle :-  The angle between the orbitals containing bonding pair of electrons in a molecule or…

Q: A chemist prepares a solution of silver(II) oxide AgO by measuring out 0.00677μmol of silver(II)…

A: Molarity is defined as the no.of moles of solute present in one litre of solution.

Q: « согле NIA CI сіліни

A:

Q: A virus has a mass of 9.0 * 10 to the negative twelth and an oil tanker has a mass of 3.0 * 10 to…

A:

Q: The molecule below can be made from Propanol and methanoic acid Methanol and propanoic acid Methanol…

A: The given compound CH3-CH2-CO-O-CH3 is an ester. Ester contains two parts, one part is alcohol and…

Q: pressure-temperature The phase diagrams for pure water and an aqueous salt solution (NaCl dissolved…

A: •Here curve is given for pure water and after addition of salt in water. •So we analyse it and…

Q: 5. A total of 9.73 mL of KMnO4 solution was required to reach the end-point in a titration w 15.00…

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

Q: 10) of the reactions below, which one is a decomposition reaction? NH4Cl → NH3 + HC1 2Mg +022MgO ad…

A:

Q: The pressure in Denver, Colorado averages about 632 mm Hg. How many atmospheres is this?

A:

Q: The following chemical equation is balanced. Ca(NO3)2 + Na₂CO3 CaCO3 + NaNO3 O True False

A:

Q: A molecule has 2 double bonds on the central atom and no lone pairs. Predict the electron geometry.…

A: While finding electron geometry, we count the total number of both the bond electron densities and…

Q: 350g piece of gold (Cp=25.60 J/mol °C) was heated to a temperature of 107.3°C and then placed in…

A:

Q: 8 444 0.058.91 18.33 6 4 474 29.68 0.10.29 2 0.155.85 29.40 OpenVnmrj 0 0.17 ppm

A: Higher the de-shielding greater the chemical shift

Q: The reactant molecule is re-drawn in the drawing area below. Highlight in red any groups in this…

A: In a redox reaction: Oxidation reaction: Removal of the electron or increase in oxidation state is…

Q: How much energy is required to completely separate an electron from a proton that is 230.0 pmpm…

A:

Q: Rank the effective nuclear charge Z* experienced by a valence electron in each of these atoms: atom…

A:

Q: 11) A 1.0 L buffer solution is 0.050 M HC2H3O2 and 0.250 M LiC2H302. Which of the following actions…

A: This question is from chapter ionic equilibrium in which we are asked to find - 11) Which action…

Q: Predict the SN2 product of this reaction: OH film NaOH CH,OH . 1-bromo-2-methylcyclohexane reacts…

A: In the SN2 mechanism: there is not any intermediate formed and incoming nucleophiles will attack the…

Q: Which of the following is true about solution? A solute is a minor component of a solution. All…

A: The solution is defined as the homogenous mixture of atleast two or more than two substance.  Every…

Q: Most sugars can act as reducing agents.  Could the dichromate reaction shown in equation (1) be used…

A: Given: Equation 1: 2 K2Cr2O7 + 8 H2SO4 + 3 CH3CH2OH  →  2 Cr2(SO4)3 + 2 K2SO4 + 3 CH3COOH + 11 H2O.…

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.