A balloon filled with helium has a volume of 1.28 × 10³ L at sea level where the pressure is 0.998 atm and the tem- berature is 31°C. The balloon is taken to the top of a nountain where the pressure is 0.753 atm and the tem- berature is -25°C. What is the volume of the balloon at che top of the mountain?

Q: 4. What is the concentration of PM10 in air in ppmv if its concentration is 0.15 mg/m3? Assume atmos...

A: Given the concentration of PM10 (molecular weight = 12 g/mol) in air = 0.15 mg/m3. Atmospheric press...

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

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: How many atoms does oxygen have in one mole of oxygen? 6.6 6.02E-23 3.14E-23 2.2

A: How many atoms  are present in one mole of oxygen  Solution is given below in next step   

Q: Experiment name : Heat of Combustion of benzoic acid and Naphthalene in Bomb Calorimetry Q1:Purpose ...

A: In any reaction, conversion of reactant to product will undergo some amount of energy change. Genera...

Q: OH

A: According to the rules of IUPAC nomenclature longest carbon chain is numbered at first.Carbon contai...

Q: IM LLI Calculate the standard enthalpy of reaction, AHn, of each of the given acid-base neutralizati...

A:

Q: CEC Organic product Inorganic product Br Draw the organic product. Draw the inorganic product. Selec...

A: Mechanism:

Q: 2. Predict the major product from the following reaction sequence: (Write out complete equations sho...

A:

Q: Calculate the pH if 68mL of 0.150M ethylamine (pKb=3.252) is added to 68 mL of 0.128 M KOH. Assume t...

A: Ethylamine is a weak base with pKb of 3.252. KOH is strong base. There is no reaction between strong...

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 126. kJ during a ce...

A: Solution                                          Given that  Enthalpy is decreased = 126 kj Work do...

Q: tempature

A:

Q: 2. Consider the electrochemical cell where one of the half cells is comprised of a Pt electrode in a...

A: GIVEN: Half cell : Pt electrode NO(g) = 0.278 atm N2O (g) =0.266 atm OH- (aq) = 6.00 M Second half-c...

Q: B: Define the coordination number and its value for BCC unit cell.

A: Given,  Define the coordination number and its value for BCC unit cell = ?

Q: Give the structure of the benzophenone and triphenyl methanol. Label each set of equivalent sets of ...

A: Equivalent types of proton gives same 1H-NMR spectrum.The no. Of signals in triphenyl methanol and b...

Q: Which of the following reactions result in a positive ∆ Ssys? a. H2O(g) = H2O(l) b. H2(g) + I2(g) = ...

A: The correct answer of the question is given below 

Q: The acid ionization constant for Ga(H20)63+(aq) is 2.5x10-3. Calculate the pH of a 0.1120 M solution...

A:

Q: drawings of the 1H-NMR and 13C-NMR spectrums for this lysine?

A:

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

A:

Q: To analyze the alcohol content of a certain wine, a chemist needs 1.00 L of an aqueous 0.200 M potas...

A:

Q: A hot 101.6 g lump of an unknown substance initially at Substance Specific heat (J/(g•°C)) 164.8°C i...

A: We have to equate the heat lost by the metal to the heat gain by the water to determine the specific...

Q: Define 1. Stoichiometry 2 Formula mass

A: Define  1. Stoichiometry  2 Formula mass

Q: Show the complete step on how to derive the balanced net ionic equation of Limestone in the presence...

A: Calcium carbonate decomposes into calcium ions and hydrogen carbonate ions when it is dissolved in w...

Q: Need solution urgently   If 3.3 mL of 0.200 M Fe3+ solution is mixed with 2 mL of 0.00200M SCN- so...

A: This is an example of dilution law here we are required to find the final concentration  of the Fe3+...

Q: Find K for the reaction NH4+ ⇌ NH3(aq) + H+ Given, H2O ⇌ OH- + H+ Kw = 1.0 ×10-14 NH4+ + OH- ⇌ NH3 +...

A:   Law of mass action The rate of reaction is directly proportional to the concentration of reactants...

Q: 5.55 Ammonia is not the only possible fertilizer. Others include urea, which can be produced by the ...

A: The given balanced equation is: CO2(g) + 2NH3(g)  -----> CO(NH2)2(s) + H2O(g) In order to find th...

Q: Which of the following actions would increase foam fractionator efficiency? Lowering salinity (such ...

A: The correct option is as follows:  

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: Indicate which of these terms can be used to describe the first step of the following reaction. More...

A: Regioselectivity refers breaking or forming of  bonds in particular position favourable by attacking...

Q: Draw the products of the reaction shown. Electron flow is indicated with curved arrows. :ÖH :ö: H3C ...

A:

Q: The specific heat of a certain type of metal is 0.128 J/(g.°C). What is the final temperature if 305...

A: The heat (q) absorbed or removed by a metal or compound can be calculated by the mass of the compoun...

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: Which is the reductant and oxidant in the reaction? 2 KMNO4 + 5 C6H8O6 + 3 H2SO4 – 2 MnS04 + K2SO4 +...

A:

Q: Either the reactant (X) or the major organic product is missing from the equation below. Draw the mi...

A:

Q: Experimental Data Table: Initial [IO3¯ ag] (mol/L) Initial [H* Initial [I (ag)] (mol/L) Trial Run Ti...

A: The iodine clock reaction is given by: IO3(aq)−+5I−(aq)+6H+(aq)  → 3I2(aq)+3H2O(l)  

Q: Examine the molecule below. Is this molecule polar? Justify your answer. "F F

A:

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: Aspirin (C9H8O4) is synthesized by reacting salicyclic acid (C7H6O3) with acetic anhydride (C4H6O3)....

A:

Q: 1) Heisenberg defined quantized particles and Schroedinger described quantized waves. True or False ...

A: 1) Heisenberg's principle states that more precisely we measure the position of a particle, less pre...

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

A:

Q: 9. When heated in solution, 2-pyridinecarboxylic acid(1) loses CO, and forms pyridine. When decarbox...

A:

Q: Solid silver sulfate and solid lead sulfate are in equilibrium with a solution containing 9.71×10-3 ...

A:

Q: A sample of methane gas at a pressure of 1.09 atm and a temperature of 262 °C, occupies a volume of ...

A: The temperature of a gas can be calculated by the ideal gas equation: PV=nRT, where P is the pressur...

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: Four liquids are described in the table below. Use the second column of the table to explain the ord...

A:

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: Draw a structural formula for the major organic product of the reaction shown. CH3CH2 c=c CH3 C=C HB...

A: protonation of alkene leading to the formation of more stable carbocation  attack of halide ion as n...

Q: owing from question 3, is it possible to separate aspirin from paracetamol using a liquid-liquid act...

A: We have to tell is it possible to separate aspirin from paracetamol.

Q: F. The specific heat capacities for several substances are shown in the table. Substance Specific He...

A: q = mc∆T  q is the amount of heat energy required  m is the mass of substance  c is the specific hea...

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.