Writing Empirical Formulas from Chemical Formulas

Q: A Chemistry student is asked to predict the pH of a potassium hydroxide solution when 1.82 g of…

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Q: The acid dissociation constant (Ka) of a 2.5 L weak acid has a value of 2.56 ×10^-4. Determine the…

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Q: Calculate the mass of nitric acid required to make a 250 mL solution with a pH of 2.40.

A: Given :  Volume of solution = 250 ml  pH = 2.40

Q: Q12: 50 ml buffer solution contain 0.15 M formic acid HCOOH,ka = 1.810-4, and 0.1 M soduim format…

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Q: Research the topic of indigestion or acid reflux. What is it and why does it occur? Research the…

A: Stomach upset or upper body discomfort, gas or nausea feeling, burning sensation in stomach and…

Q: ASAP Aluminum and oxygen gas react to produce alumina according to the equation: 4Al + 3O2 → 2Al2O3…

A: Here we are required to find the Moles of alumina formed

Q: How many kinds of H’s are there in the isomers of dimethylcyclopropane? Draw their structures and…

A: Stereoisomerism is a type of isomerism which have same molecular formula but different arrangement…

Q: Griven 2 half cells Reduction half Reaction Reducitur potentialu) Cu2+ c9a) +25 (4(5) 0.34 Ni (ag)…

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Q: b. Assuming the two half cells operate at standard conditions, calculate the standard reduction…

A: Recall the given half-cell reactions :                        HgO s  +  H2O l  +  2 e-  →  Hg l  +…

Q: 7. For each of the following reactions Write the oxidation and reduction half reactions Determine…

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Q: For the equation 2NO2(g) ⇌ N2O4(g) Will reaction move to the right, move to the left or same the…

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Q: Based only on their intermolecular forces, which of the following pairs of molecules would be most…

A: We need to select the pair of molecules that is most soluble

Q: Write the chemical formula and indicate the physical state of the products. Example: PbC12 (s) + H2O…

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Q: If 14.0 g of C₂H4 react completely to form 7.84 g of water, as shown below, the percent yield in the…

A: We can solve this problem by using this equation %yield = (observed yield / theoretical yield)× 100

Q: C6 H 1206 is the chemical formula for a polymer of carbohydrate pentose monosaccharide hexose…

A: given C6H1206 is the chemical formula

Q: Identify the buffer systems below: 1. KH2PO4/ H3PO4 NaCIO4 /HCIO4 2. 3. KF /HE KBr / HBr 4. 5.…

A: Identification of buffer system given below with explanation.

Q: (f) Methyl benzene (toluene) reacts with NO₂+ ions in strongly acidic solution, formed by a…

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Q: What is the molarity (M) of a 2.0% (w/v) NaCl solution?

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Q: Consider the molecule tetrahydrocannabinol (?21?30?2), or THC: How many milligrams (mg) of THC are…

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Q: What is the molar solubility Sn (OH)2 of in a buffer solution containing equal concentrations of NH3…

A: Here we have to determine the solubility of Sn(OH)2 in a buffer of solution containing equal…

Q: quantity in moles of Ag that one in 35.3 gm of Ag₂0 - 01x01p-s Determine

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Q: Given the tabulated data, what is the lattice energy of crystalline calcium chloride? heat of…

A: Given, the tabulated data, what is the lattice energy of crystalline calcium chloride?heat of…

Q: A sample of propane gas, C3H8, was combusted to produce energy according to the equation: C3H8…

A: Given :  Molecules of CO2 produced = 1.35 x 1024  Density of water = 1 g/cm3  Also, molar mass of…

Q: Hello, thank you for your urgent answer. I just want to ask some favor to convert your answers into…

A: The equilibrium constant Kc is the ratio of equilibrium concentration of product over the…

Q: you prepare Do NOT include units • Round your answer to the hundredths place, include zeros if…

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Q: In lab M34, copper solid reacts with bromine (Br₂) and one of the product is find the SUM of all the…

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Q: When carbon reacts and becomes an ionic compound what will it’s new electron configuration be

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Q: What is the ratio of the 6th orbital to the 2nd orbital in the Bohr model of the atom?

A: Correct Answer is - 9:1. Explanation can be shown bel

Q: Which pair of ions will form a compound of formula M2X?   a)  Sodium and carbonate   b)  Sodium…

A: We need to select the pair of ions that has the formula M2X

Q: Determine the chemical formula of a compound that contains 56.6% K, 8.69% C and 34.7% O. Write any…

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Q: consider combustion of THC, shown by the equation below: 2 ?21?30?2 +55 ?2 ⟶42 ??2 +30 ?2? How many…

A: Note - Dear student , since the given question is a multiple question, hence I solved first question…

Q: Which of the following equations is not involved in the determination of dissolved oxygen using…

A: Winkler's method is used to find the amount of dissolved oxygen in a given sample of water. Actually…

Q: The reaction between carbon and carbon dioxide occurs in accordance to the reaction below: C(s) +…

A: Kc= 0.325 mol/L      Refer the below attached image for detailed explanation.

Q: Alkane A, shown below, reacts with bromine in a radical substitution reaction. CH3 f CH3 Alkane A…

A: Monosubstitution of alkane forms a mixture of organic products. Free-radical bromination of alkane…

Q: f) On average, would you expect IO3 to have longer or shorter bonds than BrO3? Briefly explain your…

A: Here we have to compare bond length of BrO31- and IO31-  .

Q: 011/1 H 0 $11 Br H

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Q: The volume of a BCC cell is 2.6 x 10-25 m³. Determine the atomic radius in nanometers. O 2.764 nm O…

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Q: 8. Which of the following is NOT produced during the electrolysis of water? a) Electricity b) Acid…

A: The correct answer about electrolysis is given below

Q: Calculate the value of K for the following reaction if the equilibrium concentrations are: [N2] =…

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Q: Dilution: 1.How many mL of 6 M solution should be diluted to 200 mL to make a 1.5 M soln? 2. To…

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Q: 1. Find the Miller indices for atomic plane A shown in Figure Q1(a). 34 ½ Fig. Q1(a) ¾½.

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Q: A 600 mL water sample collected from an industrial wastewater plant was found to contain 9.45 ug of…

A: Given that -  Volume of waste water sample = 600 mL = 600 cm3  Mass of solute lead Pb = 9.45 ug…

Q: Calcium citrate (Ca(CH₂Oh: MM-498.46 g/mol), a common food preservative, has a K of 1.12 x 1015 at…

A: Since you have asked a question with multiple sub-parts, as per our company guidelines we are…

Q: (3.8: Similar to For More Practice 3.13) Determine the mass of a sample of carbon monoxide…

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Q: Consider the following reaction: HBrO (aq) + H2O (l) ⇋ H3O+ (aq) + BrO- (aq) If the value of Kc for…

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Q: A 0.712 Kg of sugar was dissolved in 600 mL of water. The optical rotation of the sugar using a 5.0…

A: Given, mass of sugar = 0.712 Kg volume of water = 600 mL Length of tube = 5.0 cm Known optical…

Q: onsider the following ion: BrO3-. a) Show the full electron configuration for Br. b) Draw the most…

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Q: Write the equilibrium constant expression for each of the following reactions. 1. H2(g) + 12(g) =…

A: Write equilibrium expression of the given reaction--

Q: Identify the conjugate acid-base pairs in the following reaction: HCO3 - (aq) + H2O(l) ⇌ CO3 2- (aq)…

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Q: In the experiment, what will happen to the Ksp of calcium hydroxide when temperature is increased…

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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.