A sample of food has 9 g of carbohydrates, 9 g of fat, and 7 g of protein. What is the energy content of the food in kcal? Nutrient Energy Content per gram Carbohydrate 4 kcal Fat 9 kcal Protein 4 kcal

Q: moles

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Q: Q2-A) Calculate the number of moles in 200 grams of sodium tungstate (Na,WO4) ? B) Calculate the mas...

A: In this question  A) Has asked number of moles which can be calculated by dividing mass of sodium Tu...

Q: ) The proton NMR spectrum of a compound with formula C5H12O2 is shown below. THE The carbon-13 NMR s...

A: Given:  The NMR spectra of C5H12O2 13C NMR - 15ppm, 63ppm, 95ppm To find:  Structure of the compound...

Q: at mass of oxyg

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Q: Which element in the periodic table has an specific heat of 0.099 with the lowest percentage error

A: Specific heat capacity of any substance is the amount of heat energy required to raise the temperatu...

Q: The activation energy (E,) for a certain biological reaction is 62.1 kJ/mol. If the rate constant (k...

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Q: oxidation state

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Q: Nitrous acid is a weak acid. Would you expect solutions of nitrous acid and nitric acid, of equal co...

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Q: Prepare 500 mL of 0.1 M bicarbonate buffer solution, pH = 6, from 0.1 M stock solutions of carbonic ...

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Q: Ammonium phosphate ((NH,), PO4 is an important ingredient in many fertilizers. It can be made by rea...

A: To calculate the mass of ammonium phosphate produced , we would first write a balanced chemical reac...

Q: Consider the following reactions: A B, K,=6.63 A C, K2=2.00 What is K for the reaction C B?

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Q: In the analysis of H2O2 using KMno the simulation first states that about 20 ml of water is added to...

A: Given:  

Q: Please help me with both questions

A: The correct options are:  

Q: Starting with the following equation, Fe₃O₄(s) + CO(g) → Fe(l) + CO₂(g) calculate the mass in grams ...

A: Given Reaction:- Fe3O4(s) + CO(g) -----> Fe(l) + CO2(g) Balanced reaction:- Fe3O4(s) + 4CO(g) ---...

Q: Bonus: A certain reaction A – B is second order with respect to A. If 80% of the sample remains afte...

A: The reaction in which the rate of reaction depends on two concentration terms are second order react...

Q: Male 0.48 0.36 0.20 0.55 0.45 0.46 0.47 0.23 Female 0.35 0.37 0.27 0.29 Is there any evidence that c...

A: Soln

Q: A metallurgist needs to make 60 kg of architectural bronze, which consist of 12 parts copper, 1 part...

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Q: Cite one research article that used an IR spectrophotometer in their study and discuss how they used...

A: A question based on IR spectroscopy that is to be accomplished. 

Q: Problem 2 If 200g of Polymer A, 300 g of polymer B, 500 g polymer C, and 100 g D are mixed, calculat...

A: Soln

Q: A fermenter was filled with 10L of 0.6 mol/L sodium sulfite solution containing 0.003M Cu2+ ion and ...

A: Sodium sulfite is oxidized to sodium sulfate in the presence of a catalyst, Cu2+ or Co2+ which is re...

Q: 3. Calculate the molality of a 6.55 kg sample of a solution of the solute CH;Cla dissolved in the so...

A: Since you have posted multiple questions, we will solve the 1st one for you. Kindly post the other o...

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: ny moles c

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Q: For the reaction: A2 (aq) + B2 (aq) → 2 AB (aq) The three plots below were created using the data ob...

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Q: milliliters

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Q: (a) Take [Fe2-] = [Fe3+] = 102 mol/litre. Calculate logPO2 at pH = 1 for the following reactions: (i...

A: GIVEN: Fe2+ = Fe3+ = 10-2 mol/L pH= 1 R=8.314 J/mol K Temperature = 25oC = 298K To Calculate: log PO...

Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction i...

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Q: Problem 2: Chemical Kinetics. In an actual lab class setting. You were assigned to prepare the setup...

A:      

Q: Solid State Physics

A: 1D, 2D, 3D LATTICES

Q: Eye drops must be at the same osmotic pressure as the human eye. A commercial eye drop solution is 0...

A: Given,  Concentration of solution, c = 0.331 M  Temperature, T = 37 °C = (273+37) = 310 K  Osmotic p...

Q: Question 5 of 13 Submit If Kp is the equilibrium constant for the reaction 2 A (g) + B (g) = 3 C (g)...

A: Thus option is c  correct. That is (Kp)³

Q: Synthesize the compund (Nifedipine) via Hantzsch dihydropyridine synthesis.

A: Hantzsch dihydropyridine synthesis of Nifedipine involves the reaction of ethyl acetoacetate, 2-nito...

Q: According to the equation below, what is the limiting reactant if you combine 2 moles of N2 with 3 m...

A: Limiting reagent is defined as species which gets completely used up after the completion of reactio...

Q: The gas nitrous oxide, N2O, is a dental anesthetic. a) Calculate the root-mean square velocity (ums ...

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Q: Solve for number 4 and 5.

A: The question is based upon intermolecular forces. The Intermolecular forces are the force which medi...

Q: 7. Proteins and carbohydrates consist primarily of carbon, hydrogen, and oxygen; these two molecules...

A: 1) Each atom has a nucleus made up of protons and neutrons.       2) In atoms, the number of protons...

Q: Be sure to answer all parts. A solution contains 0.284 mol of NaCl dissolved in 7.75 mol of water. (...

A: Given, Moles of NaCl = 0.284 mol Moles of water (H2O) = 7.75 mol (a) Mole fraction of NaCl = ? (b) M...

Q: 1. Nitric oxide, NO, and hydrogen gas react though the following reaction: 2NO(g) + 2H2(8) → N2(®) +...

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

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Q: 26. Calculate AG for the following reaction at 150 °C (attach your solution) C2H4(g) + 3 O2(g) 2 CO2...

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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: IR SPECTR LOD 50 4000 3000 2000 1500 1000 S00 NAVENUHB ERI C NMR 200 180 160 140 120 100 80 60 40 20...

A: IR spectra provides the information about functional groups of unknown. 13C-NMR gives information ab...

Q: For the reaction A2 (aq) + B2 (aq) - 2 AB (ag) The initial rate of appearance of AB was 3.0 M/s. Wha...

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Q: the structure of the reactants Он 1. Diethyl ether MgBr 2. H,0 OH 1. Diethyl ether MgBr 2. H,0 1. Di...

A: This a Grignard reaction in which there is  RMgX  which is Grignard reagent which has R- and MgBr+ g...

Q: In your opinion how many peaks will appear in the 1H NMR spectrum of the compound below. What signal...

A: Proton NMR spectroscopy is an analytical technique which is used for structural elucidation of a com...

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

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Q: If there are 12.6 moles Br then how many moles of NH3, NH4Br and N^2 are there.

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Q: 1. Match Letter with appropriate functi P

A: We have given the organic compound containing different functional group we have to match letter wit...

Q: Directions: Explain your answer comprehensively. Limit your justification in 3-5 sentences. 1. All H...

A: According to Hess's Law of Constant Heat Summation The total enthalpy change for the reaction is the...

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