2. Calculate the mass of hydrogen formed when 25 grams of aluminum reacts with excess hydrochloric acid. 2A1 + 6HC1> Al2Cls + 3H2

Q: 9. A compound with a molar mass of 42.08 g/mol is found out to be 85.64% C and 14.36 % H by mass. Fi...

A: given, mass percentage of C = 85.64 mass percentage of H =14.36  

Q: How many molecules of ethylene diamine will react with Ni(H,O),*? Explain your answer.

A:

Q: Vhich of the following conditions is acidic? [H30*] = 1.4 x 10 -11 А. [H3O*] = 7.2 x 10 -3 В. С. [OH...

A: pH = -log [H3O+] pOH = -log [OH-]  pH = 14 - pOH  When pH < 7 , acidic solution pH = 7, neutral s...

Q: Calculate the number of moles of each ion present in each of the following solutions.   Na+ ion in ...

A: a) Na+ ion in 1.00 L of a 0.251 M Na2SO4 Given, Molarity of Na2SO4 solution = 0.251 M = 0.251 mol/L ...

Q: A sample of a gas at 11.0°C has a volume of 0.50 L at a pressure of 0.9 atm. What is the volume of t...

A: Here given--- Initial Pressure (P1) = 0.9 atm Initial Volume (V1) = 0.5 L Initial Temperature (T1) =...

Q: What is the concentration (molarity) of HClO in a solution that is 0.168 M LIClO at 25°C?

A: Weak acid are those which does not dissociate completely in aqueous solution and weak base are those...

Q: Given the equation: 2 Al + 6 HCI --> 3 H2 + 2 AICI3 How many moles of HCl are required to produce fo...

A: ★ Answer : Correct option is • 12    ★ Solution :  • Given equation is  2 Al + 6HCl →3 H2 + 2 AlCl3 ...

Q: For every two QH2 (ubiquinol) that enter the Q cycle, one is regenerated and the other passes its tw...

A: Given reaction: QH2 + 2 cyt c1 (Fe3+) + 2 H+ → Q + 2 cyt c1 (Fe2+) + 4 H+ To Calculate: Calculate th...

Q: Name the aldehyde displayed below using the IUPAC system. Cl O O 3-chlorohexanone 4-chloro-6-hexanal...

A: IUPAC nomenclature is done by looking upon the most prior group and position of branching

Q: 3. 2. 1 shift sifı the absolute entropy for Oz (g) is u26 07 Coiole k), what-i3 the AS forithe Compl...

A:

Q: Magnesium sulfate, MgSO4, is added to 72.0 mL of 9.50 x 102 M sodium hydroxide, NaOH, until precipit...

A:

Q: Solutions of magnesium sulfate and potassium phosphate react to form a precipitate. What volume, in ...

A: Given:: Molarity of MgSO4 = 3.74 mol L-1 Moles of ppt = 63.7 mol Volume of MgSO4= ?

Q: The rate law for the following reaction is: 2W + 3X + Y Z [W| mol L- mol L mol L- [X] Rate of Produc...

A:

Q: Given the equation: Na3PO4 + 3 KOH --> 3 NaOH + K3PO4 What is the first step in determining how much...

A: Using the sticheometric coefficient to calculate all.   

Q: Silver chromate is sparingly soluble in aqueous solutions. The Ksp of Ag, Cro, is 1.12 x 10-12. What...

A: We have to predict the solubility.  

Q: Arrange the salts by their molar solubility in water. each salt. Most soluble Least soluble Answer B...

A:

Q: Write a bond-line formula for each of the following compounds. 1. 1,1-Dibromo-4-tert-butylcyclohexan...

A:

Q: 5. Provide the starting material(s) or product for the following reactions: a) catalytic NaOCH3 + H2...

A:

Q: Which of the following statements is correct? O The transfer of orthophosphate from ATP is exergonic...

A: ATP,Acetyl co A both are important for biological reactions.

Q: A world record for the men's marathon was set by Dennis Kimetto of Kenya on September 28, 2014. He r...

A: Time taken = 2 hours 2 minutes and 57 seconds  Distance covered = 26.219 miles 

Q: What happens to the value of AH for a thermochemical reacti reaction is reversed? *

A:   Heat of a reaction :  Heat energy change measured at constant temperature and pressure is called e...

Q: Ammonium sulfate fertilizer is manufactured by reacting sulfuric acid with ammonia. In the laborator...

A: Sulfuric acid reacts with ammonia to form ammonium sulfate. The equation for the balanced chemical r...

Q: What is the Kf of C6H12 using this data?

A:

Q: For the following molecule, indicate the number of valence electron, the electron geometry, the mole...

A:

Q: Titration of the I2 produced from o.1187 g of primary- standard KIO3 (Molar Mass= 214.0o g/mol) requ...

A: Please find your solution below : Molarity is a measure of concentration which is defined as the num...

Q: What are the isomers of a 5 carbon cyclic alkene with 2 double bonds?

A: isomer are pair of compound which has same molecular formula but different structural formula Here w...

Q: Once you've obtained the ammonia, you could use it to manufacture nitrous oxide (otherwise known as ...

A:

Q: Q1) consider the following reaction: 2Xy X2 + Y2 The following data were obtained for this reaction ...

A: First we have to find order of reaction. We use hit trial method. We find Rate constant, if two Rate...

Q: The sublimation pressure of solid CO2 is 133 Pa at -134.3°C and 2660 Pa at -114.4°C. Calculate the e...

A: Given-> P1= 133 pa T1= -134.3°C = - 134.3 + 273 = 138.7 K P2 = 2660 pa T2 = -114.4°C = -114.4 + 2...

Q: Which of the following elements should have the largest electronegativity? (Atomic numbers in parent...

A:

Q: 1. A buffer solution is 0.200 M in HC.H,O2, a monoprotic acid, and 0.200 M in NaC,H;O2. K, for the a...

A:

Q: What are possible starting.points of an arrow in an organic reaction? A A chemical bond B An atom C ...

A: Organic reactions can be defined as the reactions that involve organic compounds. Organic  reactions...

Q: Decide whether the statement is TRUE OR FALSE. Justify your answer.

A: 1)False  Introns are spliced out after transcription only exons, coding part go on with mature mRNA....

Q: An rxn with a rate constant k1= 2.0 x 10^-5/s at 650K and the Ea = 226 kJ/mol. What temp in K is the...

A: Given data : 

Q: H H H H H H H H

A: Given : We have to edit the structure of butane to make butanoic acid.   

Q: Which of the following reactions is possible for alkanes and cycloalkanes? A Hydrohalogenation B Hal...

A: Alkanes are saturated hydrocarbons and they do not contain any functional groups.

Q: A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reducti...

A: In an electrochemical cell, the electrode with higher standard reduction potential acts as a cathode...

Q: Instruction: Fill up the table with the correct values for the atomic numbers, mass number, numbers ...

A: Number of protons = atomic number  Number of neutrons = mass no.-atomic no. For a neutral atom :-  N...

Q: please use excel to calculate Fe analysis by ICPMS. 1') Generate a standard curve 2') calculate the...

A: 1.  Given data to generate the standard curve:

Q: Question 1 The following reaction was monitored as a function of time: AB→A+B A plot of 1/[AB] versu...

A:

Q: Measurements Golden eagles in the alps hunt from high altitudes. While hunting, eagles can reach div...

A:

Q: How many moles of NaCl are preser in a solution with a molarity of 8.59 M and a volume of 125 mL? O ...

A:  Question 1- Molarity =8.59M  Volume =1 2 5 ml=0.125L Question 2- Volume=500mL=0.500L Molarity=0.5M ...

Q: 18. Beta-carotene is usually found in carrots and spinach. Determine the molar mass of B-carotene if...

A:

Q: a. b. CH3 c. CH3

A: Since you have posted a question with multiple sub-parts,we will solve first three sub-parts for you...

Q: How many phosphoester (phosphate ester) and phosphoanhydride bonds are in adenosine and adenosine di...

A: We have find out phosphoester (phosphate ester) and phosphoanhydride bonds in adenosine and adenosin...

Q: Write the equation for assay of acetylsalicylic acid. Give the value of stoichí efficient, formulas ...

A: Solution: We know that acetylsalicylic acid (Aspirin) is well known for nonsteroidal anti-inflammato...

Q: Consider the table of weak acids below. Which of the following bases be the strongest weak base? A) ...

A:

Q: A chemist designs a galvanic cell that uses these two half-reactions: standard reduction potential h...

A: In an electrochemical cell, the electrode with higher standard reduction potential acts as a cathode...

Q: C For the mechanism step below, draw curved arrows to show electron reorganization. Arrow-pushing In...

A:

Q: A. Do gioUI 17. The unit of boiling point elevation constant (Kb ) is A. K/ kg*mol B. K/ kg+mol C. K...

A: We would use formula of elevation of boiling point to determine unit of Kb .  

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.