A gas does 135 J of work while expanding and, at the same time, absorbs 156 J of heat. What is its change in internal energy, AU (in J)? -21 O+21 +291 -291 cannot be calculated unless AT is given

Q: calculate the change in enthalpy for Reaction 2. Reaction 1: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g),C3H8(g)...

A: Given Reaction 1: C3H8(g) + 5O2(g)→3CO2(g) + 4H2O(g)  ∆H1 = -2043 kJ mol-1 Reaction 2: 6C3H8(g) + 30...

Q: Draw the structure of the compound whose spectroscopy data follows: MS m/z (% relative abundance): 7...

A:

Q: Draw a Born-Haber cycle for the formation of NaH(s) from its elements. Drag the appropriate labels t...

A: Given,  The born-Haber cycle for the formation of NaH(s) is:

Q: Using the systematic method, determine the molar solubility of AgBr(s) in a) water b) 0.15 M NaBr c)...

A: Here we have to determine the solubility of AgBr at different conditions i.e a) in pure water b) 0.1...

Q: Nitrogen and water react to form nitrogen monoxide and hydrogen, like this: N2g) + 2 H,0(g) → 2 NO(g...

A: Calculate Kc of the given reaction----  

Q: If the pressure is increased in a solution made of salt and water, what would you expect to happen t...

A: Solubility: The amount of solute present in a one-liter solution is known as solubility. The solubil...

Q: In Question 6 what is the value of AH in kJ for each of the four given reactions as well as the over...

A: Enthalpy change in a reaction is calculated by subtracting the enthalpy of reactant from the enthalp...

Q: Which of the following ionic compounds would be expected to have the highest lattice energy?   RbF N...

A: Ans. MgBr2

Q: A 2.05 m aqueous solution of some unknown solute had a boiling point of 102.1 °C. Which one of the f...

A:

Q: What mass of carbon dioxide can be made by reacting 1.56 grams of sodium bicarbonate vith 0.687 gram...

A:

Q: A famous socialite is court order to enter a rehabilitation center to eliminate her drug addiction. ...

A: A famous socialite is court order to enter a rehabilitation center to eliminate her drug addiction.T...

Q: 5. Determine the bond enthalpy of the O-0 for the reaction below if AH -2800 kJ/mol %3D H H 2 H-C-C-...

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

Q: b) Ме. Me Me Me Me Me. Me

A: Here we have synthesize the given compound from the starting material 5-methylcyclohex-2-en-1-one by...

Q: What is the molarity of a 7.00% by mass ammonium chloride (NH4CI) aqueous solution at 20 °C? Density...

A: Solution                              Given that 7.00% by mass ammonium chloride Density of the sol...

Q: Question 4 How many hydrogen atoms are in 1.0 g of H2O (MW = 18)* O 6.7 x 1022 atoms O 3.3 x 1022 at...

A:

Q: A pharmacist makes an antibiotic ointment by mixing 0.875 g of bacitracin with 24.125 g of a base co...

A: Given data,Mass of bacitracin=0.875gMass of base compound=24.125g

Q: I. Determine the number of significant figures in the following items. 1. 8.314 g 6. 240 cm 2. 5.008...

A: Given,  5. 25 stirring rods 6. 240 cm  9. 37.00 ml 

Q: equilibrium concentration

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Q: Consider the following reaction: H3PO4 Choose all final major product(s): HO HO OH HO OH A C HO HO H...

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Q: Calculate the number of moles of Fe in 43.6 grams of Fe

A: Given weight of Fe = 43.6 grams Molar mass of Fe= 55.845 g/mol

Q: Write the clear balanced net iconic  hand written equation for the this reaction that occurs when am...

A: Net ionic equation is the chemical equation that shows only those elements, compounds, and ions that...

Q: A 1.0-mL volume of seawater contains about 4.0 x10‒12 g of gold. The total volume of ocean water is ...

A: Given,  1.0 mL of sea water contain 4.0×10-12 g of gold.  The total volume of sea water 1.5×1021L  T...

Q: Which compound is the product of the following reaction sequence? Br2 Mg H+ PBr3 Mg 1. СО2 FeBr3 Et2...

A:

Q: Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid wat...

A: Mole ratio - Is the ratio between amount in moles of any two compound involved in a chemical  reacti...

Q: A solution contains 15 ppm of benzene. The density of the solution is 1.00 g/mL. This means that the...

A:

Q: 5. Complete the following reaction and propose a mechanism to justify your 1. O3 2. Reductive work

A: A question based on alkene that is to be accomplished.

Q: Classification: Reaction: Enzyme:

A:     Drug: Acetaminophen sulphate Paracetamol sulfate is an aryl sulfate. It is paracetamol in...

Q: Can 3-hexanol be easily made from hexanoic acid via reduction why or why not  when trying to oxidiz...

A: Reduction in general terms is removal of oxygen and oxidation in general  terms is addition of oxyge...

Q: Complete the following reactions.

A: the given reaction are  example of aromatic substitution reaction.    

Q: A coin dropped overflow. on the surface of a water-filled container does not

A: When we add coins to the full glass of water we will  observe that water is  bulging out at the surf...

Q: Predict the i.) bond order ii.) magnetic property as (diamagnetic or paramagnetic) iii.) the HOMO or...

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Q: Ammonium perchlorate (NH,CIO4) is a powerful solid rocket fuel, used in the Space Shuttle boosters. ...

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Q: Questions and problems. Answer the following. * W hich substance in each pair has greater intermolec...

A: Here, we have to find the substance in each given pair that has greater intermolecular forces of att...

Q: Он О ОН О Me2SO4 K2CO3 HO OH 2 MeO OMe 3 OH O benzaldehyde 3 КОН, МеОН Мео OMe 1

A:

Q: A standardized iodine solution is used to titrate hydrazine sulfate in a sodium bicarbonate- buffere...

A: This question is from redox titration where we apply the concept of equivalence to find the Molarity...

Q: EQUILIBRIUM CONSTANT K Sample Unrounded Rounded

A: On dilution concentration changes but no of moles remain same. Sample A Fe^3+ Initial concentration ...

Q: If 7.92x10^4 of heat are required to raise the temp of 220.3 g of a substance from 332K to 442K what...

A: Amount of heat = 7.92 × 104 Joule Mass of substance = 220.3 gram Initial Temperature, T1 = 332K Fina...

Q: Select the more stable (canonical) structure for the compound below. Explain what makes one structur...

A: The electronic configuration of N(atomic no 7) is 2,5 that is to get more stable electronic configur...

Q: Mass spec: M = 161 (100%), 163 (33%). Which of the following is %3D a possible molecular formula? C9...

A: In this mass spectrometry data, we are given two peaks whose intensity ratio is also given . So we w...

Q: please answer only molality

A:

Q: moles H20 %3D

A:

Q: he weight (in mg) of an 80.0%(w/) sodium phosphate dihydrate reagent needed to prepare 800.0 mL of t...

A: Total volume of solution = 800 mL Density of solution = 1.00 g/mL Solution contains 5.68 ppm = 5.68 ...

Q: Q1: Give IUPAC name for the following structures. (five only) Br H,C CH, HO ČI -OH

A: In case of Alkene we use "ene" at the end of the name. In case of Alkyne we use "yne" at the end of ...

Q: dimensional analysis The bromine content of the ocean is about 65 grams of bromine per sea water. Ho...

A:

Q: 35.00 mL of a solution of KIO3 reacted with exactly 35.00 mL of a 0.1000 M solution of KI in acid me...

A: a.) We would first write balanced chemical equation. The we would calculate moles of KI using the mo...

Q: QL. Consider the following molecule: A B D At each atom, what is the hybridization and the bond angl...

A: Triple bond - sp hybridization - bond angle 180  Double bond - sp2 hybridization - bond angle 120  S...

Q: 3. a. When NH, is treated with oxygen gas, the products obtained are N,(g) and H,0(1). Calculate AH°...

A: The reaction between NH3 and N2 can be given as: 4NH3+3O2→2N2+6H2O The enthalpy of the reaction can ...

Q: Name: Mass to Mass Practice 1 Part 2: Use the following equation for questions 1-5 below... find the...

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Q: Which of the following species are likely to be nucleophiles and which electrophiles? Which might be...

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Q: 4. Show the steps necessary, in order, to make each of the following compounds. Start with benzene, ...

A: Here we have to synthesize the following given compounds from benzene starting material by multistep...