A sample of Fe(H2PO4)3 that contains 12 000 oxygen atoms must also contain how many phosphorus atoms?

Q: For each system listed in the first column of the table below, decide (if possible) whether the chan...

A: Entropy increases when liquid or gaseous molecules get more space to move. 

Q: 14. Including stereochemistry, the correct IUPAC name for the following compound is: Name:

A: (5S, 4S)-5-bromo-4-chloro-2-flouro-3-methylhex-2-ene

Q: Sketch a titration curve for the following amino acids and indicate the pKa values for all titratabl...

A: Answer -  

Q: An iron ore has a 55% Fe2O3 with 5% moisture content. What is the Percentage of Fe2O3 in a dry basis...

A: Let us assume that 100 molecule of iron ore in which only 55 molecule of Fe2O3 present with moisture...

Q: a company is making a salt nacl solution for medical use each bottle contains 200 ml of salt solutio...

A: The mass of solute in gram present in 100 mL of solution is known as the mass percent concentration ...

Q: 4. Propose an efficient synthesis of 2-cyano-1-cyclopentanol from cyclopentene.

A:

Q: A chemistry graduate student is given 500. mL of a 1.80M hydrocyanic acid (HCN) solution. Hydrocyani...

A: First to calculate the moles Then using formula to calculate mass of KCN.   

Q: A sample of helium gas at a pressure of 1.12 atm and a temperature of 21.6 °C, occupies a volume of ...

A:

Q: Determine the IUPAC name of the skeletal formula shown below.

A: The naming of an organic compound can be done with the help of rules given by international union of...

Q: Question 7 The cell notation for the Galvanic cell is A(SYA²*/B2(s)/B¯ The Standard Reduction Potent...

A:

Q: OH

A: 1. Bromination of alkane occurs via radical mechanism. 2. HBr addition reaction in presence of perox...

Q: 7. A 6.0 grams of NaOH is dissolved in distilled water to make 1.60 - liters of solution. What is th...

A:

Q: Compare the following: Acid 1: hydrofluoric acid , HF Acid 2: hydrosulfuric acid , H2S Acid 3: sulfu...

A: Acid is a substance which donate H+ ion  and form well stabilised conjugate base

Q: Moles to Grams: 2. How many grams of Vanadium (V #23) in 3.45 moles? Given: 3,45 m Find: 79 V 3.45M ...

A: Correct Answer: 175.75 g vanadium

Q: A solution made with 0.140 moles of phosporic acid (H3PO4), dissolved in 194 mL of solution, was tit...

A: Moles of H3PO4 = 0.14 Volume of solution of H3PO4 = 194ml = V2 Concentration of NaOH = M1 = 1.320M V...

Q: In the laboratory a student measures the percent ionization of a 0.487 M solution of acetylsalicylic...

A:

Q: Write the balanced equation for the reaction of acetaldehyde with Tollen's reagent. What type of rea...

A: Given :-  Acetaldehyde + Tollen's reagent →  To write :-  Balanced chemical equation  Type of react...

Q: . A 100 mg vitamin C tablet weighted 0.645 g. A student crushed the tablet and transferred 0.119 g o...

A:

Q: Estimate the uncertainty in the position of a nitrogen molecule that has a speed of 500 +/- 2.0 m/s....

A:

Q: What is the change in molar conformational entropy when the same random coil is stretched from fully...

A: Solution -

Q: Calculate the molar solubility of magnesium fluoride (MgF2) in a solution that is 0.250 M in NaF. Fo...

A: The solubility constant of a compound is the multiplication of the molar solubility of its constitue...

Q: 2. The concentration of of ozone (O3) in Beijing on a summer day (P = 101.325 kPa ; T = 30°C) is 125...

A:

Q: 1. Ikaite, CAC03•6H,0(ik), is a hydrated calcium carbonate mineral that forms in Mono Lake, Californ...

A:

Q: KOGRESS CHECK NO, 3 Rank the following sets of substituents in order of priority according to the Ca...

A:

Q: If the volume of a gas is 3.6 Land exerts a pressure of 3.1 atm, what will the pressure be if the vo...

A: Given :-  initial pressure = 3.1 atm  initial volume = 3.6 L  final volume = 6.5 L To calculate :-  ...

Q: Compare the following: Acid 1: hypochlorous acid, HCIO Acid 2: hydrogen sulfide ion , HS Acid 3: sul...

A:

Q: Give the complete IUPAC name for each of the following compounds: a. CH3CH2CBR,CH3 b. (CH3)3CCI C. C...

A:

Q: A student reads a barometer in the laboratory and finds the prevailing atmospheric pressure to be 74...

A: (i) 747 mmhg to atm 760 mmhg = 1 atm 1 mmhg = (1/760) atm 747 mmhg = (747/760)atm = 0.983 atm (ii) 7...

Q: 19. Instructions: MAKE SURE TO CHECK ) 0.4 R REMAINING TIME. On a separate paper form the giver comp...

A: An ionic compound is formed between a metal and nonmetal by the complete transfer of electron from t...

Q: Water Temperature 8 degrees Time (sec) to 60 cm Time (sec) to 40 cm Time (sec) to 20 cm Skittle Colo...

A: A question based on matter that is to be accomplished.

Q: Lalisa and Labmi were tasked to design a new and efficient method of producing black inks. To determ...

A: Retardation or retention factor (Rf) value is the ratio of distance traveled by the analyte to that ...

Q: What does STP stand for in chemistry? What are the values for each letter? Explain why STP is import...

A:   Characteristics of gas:  Compressibility Expansibility Diffusion Pressure   Variables of gas:  S...

Q: What is the equivalent weight of CdI2 used to precipitate out CdS? CdI2 has a formula weight of 366....

A: Equivalent weight of a substance can be defined as the mass of one equivalent of that substance in g...

Q: Urea, (NH2)2CO, can be prepared by heating ammonium cyanate, NH4CNO. NH4CNO → (NH2)2CO This react...

A: Solution                            Given that Urea, (NH2)2CO, can be prepared by heating ammonium ...

Q: The enthalpy of vaporization of chloroform (CHCl3) is 29.4 kJ mol−1 at its normal boiling point of ...

A: Given that, Enthalpy of vaporization of chloroform, ∆Hvap(CHCl3) chloroform= 29.4 kJ mol−1 =29400 J ...

Q: For each system listed in the first column of the table below, decide (if possible) whether the chan...

A: Since,  

Q: How many carbon atoms are there in 180 g of propanol (C3H8O).

A: Given mass of propanol

Q: how many joules does it take to heat a 2.50 g silver (Csilver = 233.0 J/kg C) bracelet from 25.0 C t...

A:

Q: If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g･°C) that...

A: Given data : Heat (q) = 801 J Specific heat (C) = 0.450 J/g.°C Initial temperature (Ti) = 22.5 °C Fi...

Q: Draw a structural formula for the major product of the reaction shown. CH3CH2CH=CHCH2CH3 Cl2 H20 • S...

A: The alkene undergo chlorination reaction  by the formation of chloronium ion . Now there are two nuc...

Q: You want to store 165 g of CO, gas in a 12.5-L tank at room temperature (25°C). Calculate the pressu...

A: The ideal gas equation is given as: PV=nRT            …(1) Where P, V, and n are the pressure, volum...

Q: JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from the furnace, JJ was u...

A: As JJ  Techie tried for the calcination of the ceramic powders at  16000C for about 12 hours, the pr...

Q: The oxidation number of the central atom Mn2 (C204)3 Answer:

A: To solve this problem we have to calculate the oxidation state of central metal of the given compoun...

Q: Draw the products of the reaction shown. Electron flow is indicated with curved arrows. H3C-C=C-CH3 ...

A:   Click reaction:  It is an example for cyclo addition reaction  Alkyne and Azide  are reacted in t...

Q: In the laboratory a student measures the percent ionization of a 0.487 M solution of acetylsalicylic...

A: Given data, % ionization of aspirin= 2.40% [Aspirin]= 0.487 M Ka of Aspirin = ? ,  

Q: 11-C. Calculate the pH at each point listed for the titration of 100.0 mL of 0.100 M cocaine (Sectio...

A:

Q: What two elements are exceptions to the way we normally write electron configurations? write the exp...

A: Electronic configuration tells us about how electrons are distributed in atomic orbitals 

Q: Write the net ionic equation for the acid-base reaction. Include physical states. HCIO,(aq)+NaOH(aq)...

A: We have to predict the net ionic equation .  

Q: Sulfuric acid, H2SO4, is added to a total volume of 100 mL to make a 0.150 M solution. How many mL o...

A: Equivalence point of titration is the point at which the amount of titrant added became excess to ne...

Q: In what direction will implementing CO(g) +NO,(g) →Co,(g) +NO(g) affect the rate of the reaction, de...

A: Answer: This question is based on the stoichiometry of the reaction, according to which pressure of ...

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.