04/12/21

chemistry help!
A balloon is filled with H3FSi gas. If the balloon has a volume of 0.583 L at 22.0 degree Celsius and 75 atm, how many moles of H3FSi gas does it contain?
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04/12/21

If you have a 1 liter 70% rubbing alcohol, how much (in volume) alcohol is present?
im quite confused can someone help me to answer this
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04/12/21

Calculate the pH of 0.58 M solution of sodium benzoate?
What is the pH of a 0.58 M solution of sodium benzoate, NaC6H5COO(aq)? Ka = 6.3x10-5 for benzoic acid (weak acid), HC6H5COO(aq).
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04/12/21

Predict the product of the following reaction, balance the equation, and state the type of reaction:

C3H7OH + O2 --> ?
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04/12/21

quantum numbers
a.) List all of the possible values for l in the 2nd energy level (n = 2). Leave fields blank if they are not needed.
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04/12/21

A solution is said to contain 3 grams of chlorine gas and 5 moles of hydrogen gas in 10 moles of water. Calculate the mole fraction of all components in the solution
how to calculate this someone help
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04/12/21

Determine the lactic acid content (in M) of the 10.-mL fermented milk sample.
Mola and Rity were tasked to analyze the acidity of a 10.-mL fermented milk sample diluted with water in a 250-mL volumetric flask. Mola obtained a 20.-mL aliquot of this solution, diluted it to... more
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04/12/21

How much in mass of CaO in needed to prepare 500 mL of a 7.5% mass-volume solution?
someone help me answering this
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04/12/21

Calculate the molality of a 100-gram 25% by mass sucrose [C12H22O11] in water.
how to calculate its molality
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04/12/21

Find the empirical formula.

The compound known as diethyl ether, commonly referred to as ether, contains carbon, hydrogen, and oxygen. A 1.376g sample of ether was combusted in an oxygen rich environment to produce 3.268g of... more
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04/12/21

would C2H6, C2H4 or C2H2 release the most amount of energy when the carbon-carbon bond is broken?
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04/12/21

What is the overall reaction order for the following rate law: Rate = k[A][B][C]²
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04/12/21

Consider this half reaction: Na⁺(aq) + e⁻ → Na(s). For this reaction, E°(red) = -2.7 V. If this reaction is tripled so that 3 Na⁺ ions are reduced to 3 Na atoms, what is the new E°(red)?
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04/12/21

Determine E° for the half-reaction Fe³⁺(aq) + e⁻ → Fe²⁺(aq)
Fe^3+(aq) + H2(g) -> 2H+(aq) + Fe^2+(aq)E = +0.77 V(17/16)
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04/12/21

At 460 K, ∆G = -12.8 kJ/mol for the reaction 2 A (g) → B (g). If the partial pressures of A and B are 7.20 atm and 0.420 atm respectively, what is ∆G° for this reaction?
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04/12/21

Determine ∆G° for the reaction 3 N₂(g) + 2 O₃(g) → 6 NO(g) at 223°C.
DH = +257.7 KJ/molDS = +213.7 J/mol K
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04/12/21

What is the entropy when 1.38 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]
it is not 23.736 J/K(16./10)
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04/11/21

Calculate ∆S° for C₃H₄(g) + 2 H₂(g) → C₃H₈(g).
C3H4: 266.9 J/mol*KH2: 130.6 J/mol*KC3H8: 269.9 J/mol*K
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04/11/21

What is S° for B in the reaction 3 A → 2 B if ∆S°(rxn) =-177.8 J/mol ･ K? [S° (A) = (205.0 J/mol ･K)]
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04/11/21

What is the entropy when 1.41 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]
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04/11/21

What types of intermolecular forces
H2O has what type of intermolecular forces besides hydrogen bond?
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04/11/21

concentration of reaction
Consider the reaction.A(aq)↽−−⇀3B(aq) 𝐾c=4.82×10^−6 at 500 K If a 2.40 M sample of A is heated to 500 K , what is the concentration of B at equilibrium?
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04/11/21

Are my answers to these Chemistry problems correct?
*The scientist who discovered the relationship between the relative volume of a gas and the stoichiometric coefficients in a chemical equation was _______.A. AvogadroB. BoyleC. DaltonD.... more
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04/10/21

equilibrium constant, 𝐾c , for the reaction
Calculate the value of the equilibrium constant, 𝐾c , for the reactionQ(g)+X(g)↽−−⇀2M(g)+N(g) given thatM(g)↽−−⇀Z(g) 𝐾c1=3.616R(g)↽−−⇀2N(g)+4Z(g) 𝐾c2=0.5763X(g)+3Q(g)↽−−⇀9R(g) 𝐾c3=14.6
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04/10/21

quotient and ICE tables
Consider this equilibrium reaction at 400 K.Br2(g)+Cl2(g)↽−−⇀2BrCl(g)𝐾c=7.0 If the composition of the reaction mixture at 400 K is [BrCl]=0.00608 M, [Br2]=0.00181 M, and [Cl2]=0.000332 M,... more
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