3. A 12.3 g sample of an alloy of Mg (35%) and Al (65%) produces H2 when added to 25 ml of 1.21 M HCI. Calculate the total H2 formed from the reaction. Calculate the mass of the unreacted excess reactant(s).

Q: Part A What is the magnitude of the electric field at a point midway between a=5.6 µC and a +5.8 µC ...

A:

Q: What is the percent by mass of aluminum in Al 2 (SO 3) 3? (At. mass: Al-26.98; S-32.07;0-16.00) O a....

A:

Q: What advantages and disadvantages does water have as a recrystallization solvent?

A: Recrystallization is used to purify chemicals by dissolving both impurities and a compound is dissol...

Q: The reaction represented by the equation CO2(g) ---> C(s) + O2(g) is always ________

A:     Recall the given reaction,    CO2 (g)                          C (s)  +  O2 (g) We have to ident...

Q: Determine: a) What is the Global reaction b) What is the theoretical power of the cell c) What is th...

A:  (a)               C + 2O2-     →Anode         CO2 + 4e-4e- + O2     →cathode        2O2-           ...

Q: 3. Solar radiation heats the surface after sunrise, and the resulting heat flux F to the atmosphere ...

A:

Q: Page 1| 16 What's New Directions: Explain the existence of various types of chemical formulas and gi...

A: There are various types of chemical formula exist in molecule. Each chemical formula shows different...

Q: of chemical reactions? Select one: a.

A: Rate of chemical reaction is change in concentration of reactants per unit time interval.   

Q: . What factors can affect a solute's Rf value in thin-layer chromatography? 2. Why is it necessary ...

A: Answer - According to the question - Rf values and reproducibility can be affected by a number of di...

Q: We titrate 25.0 cm3 of 0.012 M K4[Fe(CN)6] solution with 0.020 M K3[Fe(CN)6] solution. What will be ...

A: Fe is present in its +2 oxidation state in K4[Fe(CN)6], (which is the reduced form) and is present i...

Q: (a) Max Planck proposed two postulates to explain the behaviour of the black- body radiation. Explai...

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out o...

Q: Write the materials and how are you going to prepare this solutions with step-by-step procedures. 2...

A:

Q: The burning of 50.2 g of SiH 4 (MW= 32.8)at constant pressure gives off 3790 kJ of heat. Calculate A...

A: The reaction in which heat is released is known as exothermic reaction.  The negative sign indicates...

Q: 3) A solution has a pOH of 3.62. a. Is the solution an acid or a base?. Part b below first.) (If you...

A: As part of our community guidelines, we can answer only the first three sub-parts of the given quest...

Q: What is the percent yield of CO 2 if the reaction of 10.56 grams of CO with excess O 2 produces 14.0...

A:

Q: Calculate the pH of a 7.51 M solution of HBRO. The K, of HBRO is 2.50 x 10. Express your answer usin...

A: Given data :  Initial concentration of HBrO = 7.51 M  Ka = 2.50 × 10-9   

Q: Question 8 Which of the following expressions does not represent a proper expression for the rate of...

A:

Q: 2. A chemical reaction proceeds in such a way that after the first second, the amount of a certain c...

A:

Q: How would I solve for the molarity of the unknown CaCl2 solution

A: The quantitative analyses uses various techniques and methods to quantify the amount of analyte pres...

Q: 1. Octane, C8H18, has 18 different constitutional or chain isomers. One of them, isooctane, is used ...

A: Chain isomerism arises due to the difference in the arrangement of carbon chain with in a molecule.

Q: Copper(II)-ammonia system 1. Place 1 mL 0.1 M CuSO̟ into a test tube. Then, add 5 drops 1. 00 M NH, ...

A: Addition of excess ammonia, NH3 to copper(II) ion forms a complex compound that leads to a change in...

Q: Which of the following will produce an oxidation product with KMnO4 that is insoluble in NaOH?

A: Organic reaction mechanisms:

Q: 2. A solution may contain any of the three group I cations. A white precipitate is formed the additi...

A:

Q: Under certain conditions the rate of this reaction is zero order in dinitrogen monoxide with a rate ...

A:

Q: MULTIPLE CHOICE: Write the letter of the correct answer. Write E if the answer is not found within t...

A: let us discuss step by step solution.

Q: It is the study of the heat or energy involved in physical and chemical changes. Thermodynamics The...

A:

Q: The weak acid HA is determined to be 8.32% dissociated when the initial concentration of HA is 0.030...

A: Initial concentration of HA = 0.0300 M Degree of dissociation = α = 8.32 % = 0.0832    

Q: The standard enthalpy change for the combustion of 1 mole of propane is –2043.0 kJ.         C3H8(g)...

A:

Q: How do we keep relative supersaturation low by controlling temperature?   temperature should be con...

A: Relative supersaturation is ratio os supersaturation for improving the relative supersaturation we s...

Q: The following reaction sequence is described as an introductory organic chemistry laboratory experim...

A: In synthetic organic chemistry, the combination of appropriate reactions under suitable conditions o...

Q: How many grams of magnesium are required to produce 4.380 kg of Siı? (At mass: Mg-24.31; Si-28.09) S...

A:     Recall the given reaction,  SiCl4  +  2 Mg                   Si  +  2 MgCl2   4.380 Kg of Si is...

Q: A gas made up of atoms escapes through a pinhole 2.83 times as fast as O, gas. Write the chemical fo...

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as...

Q: The unit cell for tin has tetragonal symmetry, with a and blattice parameters of 0.5 and 0.318 nm, r...

A:

Q: How much 0.5 M KOH must be added to 200 mL of 50 mM glycine at ph 8.6 to bring its ph to exactly 10....

A: Answer: Glycine is an amino that act as an buffer between the range of 8.6 to 10.6, therefore the pH...

Q: A charge of 7.15 mC is placed at each corner of a square 0.450 m on a side. Part A Determine the mag...

A: Apply Coulomb's law, F = Kq1q2/ r2

Q: A 2.30 g sample of ethanol, CH3CH2OH, is combusted in a bomb calorimeter. The temperature of the cal...

A:

Q: [References) Predict the sign of AS and then calculate AS° for each of the following reactions. (Thi...

A: We'll have to remember some rules to predict the sign of entropy 1. Gases has higher entropy means i...

Q: Question 7 How many grams of magnesium are required to produce 3.000 kg of Si? (At mass: Mg=24.31; S...

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as...

Q: 76. Predict the standard cell potential for the following re- action at 25°C. Zn(s) + Fe*(aq) Zn²*(a...

A:

Q: Using the VSEPR theory, predict the molecular structure of the following molecule: H2Se O tetrahedra...

A: In VSEPR theory mainly explaines the bond angle due to  interaction of lone pair with bond pair elec...

Q: The rate constant for a particular zero-order reaction is 0.075 M s1 If the initial concentration of...

A: Detail mathematical calculation to find out the value of time for given zero order reaction is shown...

Q: The potential energy curve below is for two nuclei undergoing fusion. As the nuclei approach, the po...

A: Answer: Movement in the direction of attraction force decreases the potential energy and movement in...

Q: What is the empirical formula for a compound containing 55.27% Tin 14.93% sulfur and the remainder o...

A:

Q: Please help by identifying each functional group. There is at least 2 steps for each

A: We have to carry out the given transformation atleast in 2 steps.

Q: Calculate the amount of heat needed to melt 147. g of solid benzene (C,H) and bring it to a temperat...

A:

Q: Question 5 The rate of a reaction depends on collision frequency O collision energy o ollision orien...

A: Chemical kinetics can be defined as the branch of chemistry that deals with rates of chemical reacti...

Q: 10% (w/w) aqueous potassium iodide has a density of 1.202 g/ml. Which of the following statements is...

A: Molarity of solution is defined as number of moles of solute dissolved per litre of solution.

Q: The symbol for rate constant is? Select one: a. L b. C c. k d. s

A: In chemical kinetics, the reaction rate constant or reaction rate coefficient is used as a proportio...

Q: Balance the following aqueous reactions : (i) 10, + I- → I2 (in acidic solution) (ii) Mn03- → Mn02 +...

A: Balance the following aqueous reactions .,

Q: Calculate the standard energy change, A EU, for the reaction below. 12NH 3(g) +210 2(g) 8HNO 3 () + ...

A: Given that, a chemical reaction   We have to calculate the standard energy change of the reaction. ...

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.