Count the significant digits in each of these measurements: measurement - 7.0 x 10 kJ/mol -2 1.3 x 10 ml. 0.007100 J 42400 kg number of significant digits 0 0 0 0 X

Q: 4. In this experiment, ethanol was selected to purify benzoin on Day 1. However, alcohols are…

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Q: 2) Given the following unbalanced redox equation: Br + Cr₂0₂² →Cr+3+ Br₂ (in acid) In a redox…

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Q: CI 1. Mgᵒ, CH₂CH₂OCH₂CH3 2. CO₂ 3. HCI, H₂O

A: Given reaction: We have to find the product of the reaction.

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Q: Z: N

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Q: The combustion of ethane (C₂H₂) produces carbon dioxide and steam. 2C₂H₂(g) +70₂(g) → 4CO₂(g) +…

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Q: O Molecula

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Q: 1. Magnesium solid reacts with aqueous hydrochloric acid to form the Mg2+ ion in solution. In an…

A: 1)a)  b) The heat can be calcualted using: Where m is the mass of the system C is its heat capacity…

Q: H₂(g) + I2(g) 2HI(g) 0 AG for the reaction is 2.60 kJ/mol at 25°C. What is the minimum partial…

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Q: Calculate the theoretical yield (i.e. the mass) of aspirin in your synthesis reaction. The molar…

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Q: On the following page, construct a graph of Nh2 vs % Al. To do this, refer to equation 5 and…

A: Volume of hydrogen = Volume of displaced water = 13256 ml = 13.256 lts (1000 ml = 1 lt) Pressure of…

Q: h. Predict the major elimination product that results from adding more heat. Br HOCH, heat

A: Now we have to find out the major product

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Q: A solution containing 0.15 M Pb²+, 1.5 × 10¯6 M Pbª †, 1.5 × 10-6 M Mn² +, 0.15 M MnO4, and 0.85 M…

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Q: What is the correct chemical equation for the double replacement reaction of iron (III) chloride…

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Q: Complete and balance the following half-reaction in basic solution Cr(OH)₃(s)→CrO₄²⁻(aq)

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Q: 1. Consider the reaction 2 NO (g) 2 NOBr (g) Kp = 28.4 at 298 K. In a reaction mixture at…

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Q: At which HCl addition was there an indication that all the sodium bicarbonate had been used up?…

A: Sodium bicarbonate consumption can be identified from the balanced reaction.

Q: A 15.00 ml sample of aqueous HCl requires 16.88 ml of 0.402 M NaOH to reach the endpoint.  What is…

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Q: 35. Calculate the equilibrium constant at 25 °C using standard cell potential data, Sn(s) + CuSO4…

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Q: What is the minimum mass of magnetite Fe3O4 , a iron ore, from which  1.0kg  of pure iron could be…

A: we have to calculate the mass of Fe that can be extracted from 1.0 kg of magnetite

Q: Which of the two cations will the lead metal react with? O Zn²+ Cu²+ Write the balanced reaction…

A: Given cations: Zn2+ Cu2+ We have to find the cation that will react with lead metal. Also, we have…

Q: many SC mmonium bromide sh e added to 1.00 L of a 1 ammonia solution to repare a buffer with a…

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Q: There is not an experimental method to determine the mass of a gaseous product. True False Answer…

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Q: This requires creating a standard solution in which the molarity of the complex is known, and…

A: Given: 0.500 moles of FeSCN+2 in 1.00 L of water 0.500 moles of Fe+3 and 0.500 moles of SCN-1 in…

Q: :0: :J: :10. :O: :O: :O:

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Q: Outline the theoretically possible stereochemical outcomes of reduction of benzil. Describe isomers…

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Q: Which sentence is not correct about ligand? OA. It is electron donor aroun

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Q: Which of the following compounds is both a Brønsted-Lowry acid and base? O I, II O I, III O II, IV O…

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Q: What is the IUPAC name for the compound below? A) 4-ethyl-5-ethyl-5-methylheptane B)…

A: Rule of IUPAC- 1) Choose the longest carbon chain as parent chain. 2) Numbering start from those…

Q: EXPLAIN THE MECHANISM OF EACH REACTION 3. Hydrogen Addition- Selectivity CH HC- CH₂ HH -H Pd HC- CH…

A: Hydrogen addition This type of reaction are called as hydrogenation reaction (reduction). In this…

Q: EXERSICE 1 An ideal gas undergoes a process A -> B in two alternative ways: i) reversible and ii)…

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Q: For the chemical reaction 3 KOH + H₂PO4 → K3PO4 + 3H₂O what mass of potassium phosphate is produced…

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

Q: An unknown was treated with six drops of HCI. A precipitate was observed. Which of the following…

A: This is cation analysis problem. We are adding reagents to precipitate out cations. Hydrochloric…

Q: HỌ5.47 Homework Unanswered The combustion reaction of nitromethane fuel occurs as follows: 2 CH3 NO2…

A: Given - 2CH3NO2(l)+ 3/2O2(g) -> 2CO2(g) + 3H2O(l) + N2(g) Standard enthalpy of this reaction=…

Q: Calculate the solubility of Co (OH)2 in water at 25 °C. You'll find Kp data in the ALEKS Data tab.…

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Q: Question 14 of 34 Write the complete ground-state electron configuration of F-. For multi-digit…

A: The Atomic number of fluorine is 9 as it contains 9 electron in the atom of it. When the fluorine…

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Q: If 5 ml of 0.1 M AgNO3 and 1.5 ml of 0.25 M dextrose (C6H12O6) are reacted as in Equation (3), which…

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

Q: Provide correct IUPAC names for the following compounds

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Q: 2- Calculate , max of the following compound N(CH₂)₂ Br 3- Calculate λ max of the following compound

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Q: For the reaction below, Kc = 1.10 × 10⁻⁸. Note Kc is sometimes called K. What is the equilibrium…

A: Given : equilibrium reaction Tip : honh2 is a weak base , so apply approximation

Q: Cd(s) + Fe²+ (aq) yes - 0 E (Fe²+ / Fe) = -0.4400 V, E° (Cd²+ / Cd) = -0.4000 V Calculate the emf…

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Q: 13.50 mL of an aluminum chloride solution is needed to reach the equivalence point with 10.00 mL of…

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Q: For the stoichiometric reaction of Na2SO4 and BaCl2, draw three beakers: One beaker containing one…

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Q: Predict the products of the following acid-base reaction.

A: Given : reactants Tip : to find conjugate base remove H+    To find conjugate acid add H+

Q: A substance contains 23.0g Na, 27 g Al, and 114 F How many grams of sodium are there in a 196 sample…

A: Please find your solution below : Mass fraction of a substance in a sample is defined as the ratio…

Q: Baseline Question: Calculate the pH of a 5.6x10-9M HCl aqueous solution. ANS: pH=6.99 Commentary:…

A: #Answer to actual question: In the case of acids, whether strong or weak, we use the formula, pH = -…

Q: Explain why HCI has a rotational spectrum but N₂ does not.

A: Given two molecules are HCl and N2 .  HCl has a rotational spectrum but N2 does not. Only  molecule…

Q: Use the References to access important values if needed for this question. A buffer solution that is…

A: Answer:- This question is answered by using the simple concept of buffer capacity which states that…

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.