A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. <10³ -5.6 x N c². m 2 <= ? N 2 mC . m 2

Q: The lattice energy for KF is 821 kJ/mol. The enthalpy of hydration for K+ is -336 kJ/mol and the…

A: First we would calculate enthalpy of solution by using the lattice energy and energy of hydration of…

Q: BALANCE REDOX REACTION (USE THE LONG METHOD WITH CHECKINGS) MnO₂ + CrO3 → Mn + CrO4 - CONTENT SHOULD…

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Q: Determine the direction to which the equilibrium will shift if the following changes occur (forward…

A: LeChatelier's principle: When factors like concentration, pressure, temperature, inert gases that…

Q: Write and Balance: Hexane (C6H14) burns in oxygen (02) to form carbon dioxide (CO2) and water (H20)…

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Q: 1. Draw center PRACTILE QUESTIONS all possible isomers and label each chiral as R & S. OH CH3 1-2 CH…

A: The molecules with the same molecular formula but different structures are known as isomers. If the…

Q: Consider the reaction. 2 A(g) = B(g) Kp = 4.73 x 10-5 at 500 K If a sample of A(g) at 3.90 atm is…

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Q: What is the percent of chloride ion in a sample if 1.1324 g of the sample produces 1.0881 g of AgCl…

A: According to the question we have, The mass of the sample is given = 1.1324 grams The mass of the…

Q: for the following revetion, 3.87 gm of Carbon (graphite) Page are allowed to react with 14.4 gmn of…

A: Recall the reaction, C(graphite) + O2(g)→CO2(g) mass of carbon=3.87 g , molar mass=12 g mol-1 mass…

Q: Ascorbic acid (vitamin C, C6H8O6C6H8O6) is a water-soluble vitamin. A solution containing 81.0 g of…

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Q: any chiral centers are present in each of the fol- molecular structures? OH CI b. Cl d. LOH CI

A: We are given four organic molecules and we are asked to determine number of chiral centres in each…

Q: BALANCE REDOX REACTION (USE THE LONG METHOD WITH CHECKINGS) SO₂ + O2 → SO3 CONTENT SHOULD BE THESE…

A: The given equation to be balanced is                 SO2+O2   ----&gt; SO3

Q: On the conformations the cost in k CH 3 3 H 2 5 ~1/1 АЗС 2 chair OH H CH 3 4 ra

A: A six-membered ring with 6 tetrahedra naturally assumes a chair conformation as the conformation of…

Q: 1. How much energy is required to raise 125 grams of water from 22.0 °C to 43.2 °C? The M.S.AT…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Use polarity and bond strength arguments to explain why HF is a stronger acid than H2O.

A: Answer:- The polarity of a covalent bond is defined by using the electronegativities of the bonded…

Q: Why is there a need to adjust the acid concentration of Group I cations before saturation with H₂S?

A: Group II cations are divided into two sub-groups, namely II A cations (known as Copper group) :-…

Q: Initial volume of water in graduated cylinder (mL) Volume of water and Aluminum (mL) Mass of…

A: Density can be calculated using formula :  Density = Mass / Volume    Average density would be…

Q: What is the concentration of a solution made by diluting 15 mL of 6.0 M HCl to a final volume of 750…

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Q: BALANCE REDOX REACTION (USE THE LONG METHOD WITH CHECKINGS) Fe²+ + Cr → Fe + Cr³+ CONTENT SHOULD BE…

A: Concept based on the balancing redox reaction.

Q: Balance each reaction, then suppose exactly 13.3 g of each reactant is taken. Indicate which…

A: Dear student since you have posted multiple questions we will solve the first question for you if…

Q: If you have a sugar with a molecular weight of 130 g/mol, how many grams would you need to add to 77…

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Q: BALANCE REDOX REACTION (USE THE LONG METHOD WITH CHECKINGS) Fe²+ + Cr → Fe + Cr³+ CONTENT SHOULD BE…

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Q: Why is there a need to adjust the acid concentration of Group I cations before saturation with H₂S?…

A: A question based on qualitative analysis of cations that is to be accomplished.

Q: How do you weigh hygroscopic solids? Give three examples of hygroscopic solids.

A: Hygroscopic property can be defined as the ability of a matter to absorb water from air. We have…

Q: Indicate the number of protons, neutrons, and electrons in 16S. 33 S. Part 1 of 3 How many protons…

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Q: BALANCE REDOX REACTION (USE THE LONG METHOD WITH CHECKINGS) + Mn + CrO4 MnO₂ + CrO3 → Mn

A: A balanced equation is one in which the number of each type of atom is the same on both the reactant…

Q: Le Chatelier's Principle Determine the direction to which the equilibrium will shift if the…

A: Le Chatelier's principle: This principle is used to predict the effect of a change in conditions on…

Q: 6.) Calculate the concentration (N) of arsenic acid (H₂A504) in a solution if 25mL of that solution…

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Q: Polonium-209, an ax emitter, has a half-life of 102 years. ▼ Part A How many a particles are emitted…

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Q: When 50.0 mL of 1.00 M hydrochloric acid and 50.0 mL of 1.00 M sodium hydroxide react, the…

A: Given data  50.0 mL of 1.00 M hydrochloric acid 50.0 mL of 1.00 M sodium hydroxide T1= 20.4C T2=…

Q: Give handwritten answer

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Q: Describe two ways to fold a filter paper to be used for filtration. Include diagrams for the…

A: Technically speaking, filtration is the act of removing suspended solids from a liquid by forcing…

Q: Determine the number of formula units of Cr(ClO2)3 and moles of oxygen contained in 8.71 moles of…

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Q: Determine the number of atoms contained in 6.8 moles of argon.

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Q: What mass of NaOHNaOH is needed to precipitate the Cd2+Cd2+ ions from 34.0 mLmL of 0.470 MM…

A: We need to determine the mass of NaOH required to precipitate Cd2+ ions from the 34.0 mL solution of…

Q: QUESTION 15 A compound of the empirical formula CH₂O is found to have a molar mass of 120 amu. What…

A: To determine the empirical formula:  First we will calculate the mass of empirical formula . The…

Q: Mechanism. Provide the complete mechanism for the reaction below. You must include appropriate…

A: Carbonyl group has electrophilic center hence, it can give nucleophilic addition reaction to…

Q: 2. How many mi ut HNO3 concentrate are needed to prepare 250 ml of solution, the percent by volume…

A: %V/V    = (volume of solute/volume of solution)x 100 Means 4 ml of HNO3 is present in 100 ml of…

Q: A sample of oxygen gas at a pressure of 0.572 atm and a temperature of 24.4 °C, occupies a volume of…

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Q: Classify each chemical compound: compound Mn(OH)₂ Se S₂ SnC1₂ type of compound O ionic O ionic O…

A: Here we have to check the type of bonding between them.

Q: Which of the following compounds precipitates from a solution that has the concentrations indicated!…

A: Given data :

Q: The gas phase decomposition of sulfuryl chloride at 600 K SO₂Cl₂(g) SO₂(g) + Cl₂(g) is first order…

A: This is a first order reaction . Now we have to find out the rate constant using the mathematical…

Q: What is the exact mass of the following molecule? (3 decimal) www.

A: Given  Structure find out the Exact Mass

Q: Questions Calculate the saponification value of a sample of castor oil from the following data:…

A: First the given data  Weight of oil =2.535 g  ethanolic KOH = 1.03M KOH =25mL HCl = 0.514M and 34.2…

Q: Give the possible values for ml if n=4 and l=2. What type of orbital is associated with these…

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Q: Use average bond enthalpies (linked above) to calculate the enthalpy change for the following…

A: Change in enthalpy of rection at constant temperature is called heat of reaction.

Q: Consider a sample of carbon tetrafluoride that contains 1.59 × 1024 atoms of fluorine. If you have…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 2. Place 3 mL of cupric sulfate solution in a test tube and drop a clean iron nail into it. Allow to…

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Q: The Keq for the reaction:  A + B ↔ AB is 2.16 What is the Keq for 2 A + 2 B ↔ 2 AB

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Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

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Q: 9.) How many grams of H₂0 must be used to dissolve loog of sucrose (C₁2H₂2011) to prepare a 0.020…

A: Recall the data- Grams of sucrose=100 g molar mass of sucrose=342.3 gmol molar mass of water=18 gmol…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.