How many phosphorus atoms are contained in 158 kg of phosphorus? 3.07 x 1027 phosphorus atoms 2.95 x 1027 phosphorus atoms 3.25 x 1028 phosphorus atoms 1.18 x 1024 phosphorus atoms 8.47 x 1024 phosphorus atoms

Q: Question 10 of 22 > 4 HCl(aq) + MnO₂ (s)- MnCl₂ (aq) + 2 H₂O(l) + Cl₂(g) A sample of 35.1 g MnO₂ is…

A: Mass of MnO2= 35.1g  Mass of HCl = 44.3g  Limiting reactant=? Theoretical yield=? Actual yield=?…

Q: Consider the following reaction: C₂H4(g) + H₂O(g) = C₂H5OH(g) Kc = 9.0 × 103³ At equilibrium the…

A:

Q: Give typed answer Explain how ir spectroscopy can be used to distinguish between alcohols ,…

A: Carboxylic acid has two strong IR absorptions at approximately 1710 cm- and 2500-3500 cm-1 Esters…

Q: I need help with Observation Observation: aluminum nitrate + sodium phosphate evidence of…

A: Observation : aluminum nitrate + sodium phosphate                         hydrochloric acid HCl +…

Q: Zinc reacts with hydrochloric acid according to the reaction equation Zn(s) + 2HCl(aq) →→→ ZnCl₂(aq)…

A: Given -> Molarity of HCl = 2.00 M  Weight of Zn = 4.55 gm

Q: What is the volume (in liters) of a 0.78 Molar solution made from 0.29 moles of potassium bromide?…

A: Molarity is defined as number of moles of solute divided by volume of solution in liter .

Q: A solution is made by dissolving 16.9 g of CH3NH²NO3 in 500.0 mL of water. Question 2.c of 30 As…

A:

Q: 1. List the hydrocarbon types in the general order of increasing reactivity.

A: The reactivity of a hydrocarbon depends on a variety of factors, including its molecular structure…

Q: 31. How many grams of each of the following substances will contain half as many atoms as 20.00 of…

A: Given: Mass of O = 20.00 g Known: Molar mass of H = 1 g/mol Molar mass of N = 14 g/mol Molar mass of…

Q: What is the difference between an acid and a base?

A: Acid - Acid donate H+ ions.  Base- Base donate -OH ions

Q: name hypochlorous acid acetic acid 0.1 M KCIO acid solution 0.1 M HONH3Br 0.1 M NaCH3CO₂ 0.1 M KBr…

A: As we know,  salt of strong acid and strong base are neutral in nature . salt of weak acid and…

Q: What is the formula of the compound that forms if the following ions chemically combined? Crft and…

A:

Q: Write the formula for barium nitrite. Ba(NO₂)2 BaNO3 B(NO2)3 Ba3N2 BN

A: We can write chemical formula of an ionic salt by criss-cross method .In the criss-cross method, the…

Q: reach of the compounds below, calculate the number of moles present. . 155.0 grams of sodium…

A: Mole is defined as weight of substance divide by it's molar mass

Q: Consider the following reaction occuring in a fixed container at 25 oC.: Question 6 P4(s) + 5 O2(g)…

A: According to Le Chatelier's principle, if a dynamic equilibrium is upset by changing the conditions,…

Q: How much heat is given up when 20g of steam at 100°C is condensed and cooled to 20°C?   A. 1.6 kcal…

A:

Q: Now, on top of the structure of methyl amine (CH3NH₂) below, select the region where the partial…

A: Electrons in a polar covalent bond are shifted toward the more electronegative atom; thus, the more…

Q: MnO4- can be used in a redox titration to determine the amount of H2C2O4 in an unknown sample. Below…

A: Given reaction: MnO4- + H2C2O4 --> Mn2+ + CO2 Volume of H2C2O4 taken = 25.00 mL Volume of MnO4-…

Q: Determine the name for N₂O5.

A: Given compound N2O5

Q: Classify as R or S and name the compound according to IUPAC HUB Br CH3 Br H 땟 H3C H H CH3

A:

Q: If the value of Ksp for Cd(103)2 at 25 °C is 2.5×10-8, what is the molar solubility of Cd(103)2 ?

A:

Q: +0000 Yes H₂O No Blank Blank НО. OH HO The following a monomer of the polymer used in biodegradable…

A:

Q: aluminum nitrate + sodium phosphate PART F OBSERVATIONS EVIDE hydrochloric acid (HCI) + sodium…

A:

Q: Draw the Lewis structure for the ethylene (C₂H4) molecule. Be sure to include all resonance…

A:

Q: TOPIC: Stoichiometric Calculations 1.) If 20mL of distilled water are added to 5mL of 70% glycerol,…

A: ♣ The dilution formula is -                                            Vinitial × Cinitial =…

Q: What word or two-word phrase best describes the shape of the PCl, molecule? What is the angle…

A: Hybridisation is phenomenon of combining two atomic orbitals to give a new degenerate hybrid…

Q: 5.7 Fischer Projections Choose the enantiomers from the following structures. 1,2 2,3 None of the…

A: Enantiomers are a pair of molecules that exist in two forms that are mirror images of one another…

Q: A student is making a solution of sugar in water.  If the student uses 0.10 moles of sugar and…

A: To solve this problem we have to calculate the molarity of the solution .

Q: CH₂CH3 CH₂CI H₂C -H H € * H- -CH₂OH CH₂CH₂OH H₂CH₂C H CH₂CH₂Cl Identical Compounds Conformations…

A: Given two molecules are-

Q: CH3CH₂CH₂CH₂CH₂CH₂CH₂CH3 H3C CCH₂CH₂CH₂CH3 H3C- melting point boiling point CH3 -56.4 °C 127.5 °C…

A: Boiling point is defined as the temperature at which a liquid starts boiling and becomes vapours.…

Q: Consider the following system at equilibrium where AH = -16.1 kJ, and Ke = 154, at 2.98 × 10² K:…

A: Given eqm rxn:  2NO(g) + Br2 (g) <=> 2NOBr(g) Kc = 154  &  ∆H° = -16.1 kJ i.e an…

Q: A newspaper article about the danger of global warming from the accumulation of greenhouse gases…

A: Given , Car usage decreased by 20.0 miles per week.

Q: how muoy ai ti tọt poiylineo eus uoy ni lipninud bris maxe air rio eman juo voy 26 (21q msxe erti to…

A: The major products of the reaction given are shown below

Q: In the box, draw the major product and indicate stereochemistry using dashes and wedges. If a…

A: Solving only the first question as per guidelines To draw the product of the given organic reaction.

Q: A model of the ethanal molecule is shown in the window below. progress ball & stick- + labels HO a.…

A: 1 mole = 6.022 x 1023 atoms/molecules/entities

Q: predicting the qualitative acid-base properties of salts Consider the following data on some weak…

A:

Q: Determine the name for Cl₂O. chlorate dichlorine monoxide chlorine (II) oxide chlorine oxide…

A: To solve this problem we  have to name the compound Cl2O

Q: Check the box next to each molecule on the right that has the shape of the model molecule on the…

A:

Q: The halogens have .......(number of) electrons in their valence shell. Select one: a. 2 Ob. 8 O c. 5…

A:

Q: Calculate the PH and POH for a .023 mole solution of HBrO2   Ki for HBrO2 = 2.1 X 10-4

A: Given,  Initial concentration of HBrO2 = 0.023 mole  Ki of HBrO2 = 2.1×10–4

Q: What is the volume (in liters) of a 0.72 Molar solution made from 0.78 moles of potassium bromide?…

A: We have to calculate the volume of solution

Q: A chemist prepares a solution of magnesium chlonde (MgCl) by measuring out 0,40 g of MgCl, into a 50…

A:

Q: 18.35 mL of a solution of the acid H₂C₂O4 is titrated, and 58.20 mL of 0.4700-M NaOH is required to…

A:

Q: When the central atom of a molecule has a steric number (i.e., number of electron regions) of 5 and…

A: Steric number is defined as sum of number of sigma bond plus lone pair around central atom .

Q: An aqueous solution at 25 °C has a pH of 0.6. Calculate the pOH. Be sure your answer has the correct…

A: given : pH = 0.6 Required: pOH = ? Formula: pH + pOH = 14

Q: Draw the structures for 1. cis-3-4-epoxy-1-hexanol And starting alkene 2. cis-3-hexen-1-ol please…

A: Answer: Stereochemistry is the branch of chemistry that involves the study of the different spatial…

Q: Which of the following reactions will be faster and why? H₂O O-H Br Br H₂O H

A: SN1 reaction proceeds with formation stable carbocation intermediate. It involves two step reaction.…

Q: Give the correct formula for aluminum sulfate. O Al3(SO4)2 Al2SO4 Al2(SO4)3 Al(SO4)3

A: Ionic compound: • Ionic compound composed of cation which is positively charged (+charge) and an…

Q: what happens when you add polished magnesium to each of these solutions (describe the products for…

A: The chemical reactivity series of metals is an arrangement of metals in the descending order of…

Q: 1. Ranking time! a. Rank the following alkyl chlorides in order of increasing rate in an SN1…

A: The term "substitution reaction" refers to a reaction in which one chemical substance's functional…

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.