Vhat is the minimum amount of heat required to completely melt 15.0 grams of ice at its nelting point? (1) 15.0 J (2) 28.6 J (3) 5010 J (4) 45200 J

Q: 2. A 230 ml ethyl alcohol was placed in a Pyrex glass and makes it full at 22°C. How much alcohol wi...

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Q: - of gasoline is öčt moles of carbon

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Q: Convert 7.2 m^3 to liters

A: This question is related to unit conversion topic. Meter cube (m3) and liter are the unit of volume.

Q: . An unstable isotope that lies under the stability curve of the nucleus will emit.... a.  electron...

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Q: The proton resonance of the OH group is found at δ 5.80 for phenol and at δ 10.67 for 2- nitrophenol...

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Q: If there are 2.37 moles Fe203 then how many moles of Fe and O2 are there ? if there are 11.11 moles ...

A: Given, 1) Moles of Fe2O3 = 2.37 moles Moles of Fe = ? Moles of O2 = ? 2) Moles of Fe2O3 = 11.11 mole...

Q: Directions: Predict whether the entropy change of the system is esch of the Sullowing io ACTIVITY 1 ...

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Q: From the following formula, calculate the quantity of each ingredient required to make 3 lb (AV) of ...

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Q: 1. Identify the following as acidic or basic, and write the corresponding Ka or Kb reactions and exp...

A: Acid is a substance which release H+ ions and base is substance which release OH- ions

Q: 153.6 37og=0,816lb

A: Given : We have to convert grams to lb.

Q: Answer true or false. (a) For Group 1A and Group 2A elements, the name of the ion each form is simp...

A: Since you have posted multiple questions we will solve first three subparts for you. To get remainin...

Q: percent abundance

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Q: Consider the initial‑rate data at a certain temperature in the table for the reaction described by ...

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Q: 1. Write a balanced nuclear equations for the following: a) the loss of an alpha particle by Thorium...

A: a) The balanced nuclear equation for the given reaction is, 23090Th ---> 22688Ra + 42He       b) ...

Q: Trial Trial Trial Trial 1.0 g 3.0 g 5.0 g 12.0g NaCi NaCI Naci Sucrose Mass of empty beaker (g) 24.5...

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Q: Match the following descriptors to their meaning as it applies to the acidity of a wine.  Soft Ans...

A: Wine is a mixture of ethyl alcohol and water. A wine has a fruity flavor. It has a smooth mouthfeel....

Q: How many Liters are in 13.8 moles of CO2 gas @ STP? Group of answer choices A.13.8 moles x (1 L/22.4...

A: Here we have to find the volume occupied by 13.8 moles of carbon dioxide (CO2) at STP.

Q: 28. Balance the following chemical reaction: C3H8 + O2 CO2 + H2O

A: To balance the equation we will balance the atom on reactant and product. Number of C , H and O on r...

Q: 'H NMR 300 MHz

A: a) This is an isomeric ester of the compound in a. The butyl group present in the above compound can...

Q: You will be varying the initial amounts of Fe" and SCN Iin Part B What is your hypothesis for how th...

A: Reaction is : Fe3+ + SCN- → [FeSCN2+]  

Q: avord Cylindento obtain avelume 3 In Part B, did all of your mass measurements have the same number ...

A: Measurement of any value or a parameter is an important aspect in the scientific study. The measured...

Q: What methods could be used to determine the structure of polyiodides? Discuss how could they identi...

A: Answer -  polyiodides - The polyiodides are a class of polyhalogen anions composed entirely of iodin...

Q: How many moles of H₂O can be formed from 1.71 × 10²³ molecules of NH₃ from the following equation? 4...

A: Given, 4 NH₃(g) + 5 O₂(g) → 4 NO(g) + 6 H₂O(g) Number of molecules of NH3 = 1.71 × 10²³ molecules Mo...

Q: If 3.0 g of aluminum and 6.0 g of bromine reacted to form AlBr3 how many grams of product would theo...

A: Given that, 3.0 g of aluminium and 6.0 g of bromine reacted to AlBr3. So, the reaction is given belo...

Q: Please answer all with short explanation otherwise don't attempt Chemistry TRUE or FALSE   1. Th...

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Q: All of the following statements about preparation of spotting needles are true EXCEPT: Select an ans...

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Q: 2. c) Determine which of the followings have higher Zet Valence electron in atom X (Z= 13) or Valenc...

A: Since Zeff is the effective nuclear charge experienced by the electron from the nucleus.  The Zeff d...

Q: 17. What is the new volume when 8.0L of gas at 50°C and 120 kPa are heated to 60° C and 140 kpa? (Sh...

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Q: Arrange the non-polar compounds P and Q below in ascending order of boiling points. Explain your ans...

A: 3) We have to tell among the given non-polar compound P (2,2,3,3-tetramethyl butane) and Q (2,2-dime...

Q: student runs the reaction represented by the equation below. What mass of H2 gas would be produced i...

A: Given Reaction:-   Zn + HCl --> ZnCl2 + H2   Mass of Zn = 5.63g   Balanced Chemical reaction:- Zn...

Q: L. The hydrocarbon, dodecane, is used to make detergents. It is an alkane and has the molecular form...

A: The hydrocarbon dodecane is used to make detergents.

Q: a) Describe an atom using the Bohr model and wave mechanics model. b) What are the differences betwe...

A: ATOMIC MODEL THEORIES

Q: 3. If 50.00 mL of 1.00 M HC,H,O, (K, = 1.8 x 10-5) is titrated with 1.00 M NAOH. What is the pH of t...

A: The solution is as follows:  

Q: Can someone help me answer this? thank you Pick an organic molecule that you find interesting and de...

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Q: Phenanthrene, C14H10, is an aromatic hydrocarbon. Some phenanthrene is dissolved in 50.0 g of benzen...

A: Given, Mass of phenanthrene (C14H10) = ? Mass of benzene = 50.0 g = 0.05 Kg Boiling point of the sol...

Q: PART A. Molecular Models Isomers Polarity (P or NP) Lewis Molecular Hybridization (draw structures) ...

A: The solution is as follows:  

Q: molar mass

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Q: 1. For the reaction below, determine the equilibrium concentration of all species. Kc=1x1020, [A]ini...

A: Given,  Kc = 1x1020  [A]initial = 0.4  [B]initial = 0.6

Q: [H30*] (M) [ОН] (М) pOH pH Acidic or Basic а. 0.0059 b. 12.00

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Q: Make a block schematic diagram for the precipitation, separation and identification of the following...

A: We have to identify the ions Al+3, Fe+3, and Ni+2ions.

Q: How many moles are in 65.5 grams of PF3 gas? (molar mass of PF3=87.97 g/mol) Show work please Group ...

A: NO OF MOLES = GIVEN WEIGHT/MOLAR MASS.

Q: Directions: Predict whether the entropy change of the system in each of the fllowing i ACTIVITY 1 po...

A: When state changes from solid to gas entropy is increased . when system is allowed to lower pressure...

Q: A voltaic cell with a basic aqueous background electrolyte is based on the oxidation of Cd(s) to Cd(...

A: The voltaic cell is based on the oxidation of Cd (s) to Cd(OH)2 (s) and the reduction of MnO4−  to M...

Q: The above section of an NMR was taken from a student sample of this experiment. You see while the 2H...

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Q: 1) Give the IUPAC names for the following compounds: (a) (b) CI (c) (d) CH3 . CH2CH3 H,

A: The IUPAC name of the compound can be written on the basis of the main carbon chain, functional grou...

Q: What is the volume of 0.5 moles of gas at STP? PV=nRT, R= 0.0821 STP (Standard Temperature and Press...

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Q: 4. What is the rate of heat transfer by radiation, with an unciothed person standing in a dark room ...

A: For the heat transfer by radiation 

Q: Analysis of a mixture consisting of NaOH + NażCO3 + inert matter gives the following data: Sample po...

A: Mass of original sample = 10.00 g Volume of actual solution made with original sample = 250.0 mL Vol...

Q: Which of the bases are strong bases and which are weak from Table 1? For the strong base, calculate ...

A: The answer is as follows:  

Q: CH, CH,-C- NH - - CH, — С — ОН || С — CH,– CH, | - - CH;-0

A: