04/29/21

Transfer specific heat of a metal to water - comparing metals
Specific Heat of Gold: 130J / kg K, Iron 473 J / kg KAssume both of them have equal mass and are heated in boiling water.Then each sample is dropped into a different beaker of water. All of the... more
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04/29/21

How much heat, in must be removed from 23.0 g of water at 67.2°C to decrease its temperature to 6.2°C . Please provide your final answer rounded to two decimal places
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04/29/21

At room temperature, iodine will turn from a silver solid to a purple-colored gas. This is an example of
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04/29/21

An unknown metal is raised in temperature by 31oC by 691 J of energy. If the specific heat for the metal is 0.917 J/g*C, what is the mass of the sample?

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04/29/21

Chemistry problem
Determine the nonstandard cell potential for an electrochemical cell based on the following two half-reactions:Oxidation (Anode): Mg(s)→Mg2+(aq, 2.75 M)+2 e−Reduction (Cathode): Pb2+(aq, 0.200 M)+2... more
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04/29/21

Chemistry problem
A voltaic cell will generate a voltage ifthe half-reactions are identical, but the concentrations in the half cell are different.the half-reaction with the more negative E° is the reduction... more
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04/29/21

Chemistry question
Calculate ΔG° for the following reaction:Mn (s) + Zn2+ (aq)→Mn2+(aq)+Zn(s)−4.10×104 J +3.74×105 J−8.10×104 J
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04/29/21

Chemistry question help
In the following chemical equationHClO (aq)+H2O (l) ⇌ClO− (aq)+H3O+ (aq)The Bronsted-Lowry acid isHClOClO−H2O
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04/29/21

Chemistry problem
Which is the weakest acid?H3AsH2SeHBr
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04/29/21

determine the molar mass of an unknown nonvolatile solute of non electrolyte compound raising the boiling point of 150g of benzene by 0.500 degree Celsius
This topic is about Calculating Boiling point elevation
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04/29/21

General Chemistry 1
Match each property of a liquid to what it indicates about the relative strength of the intermolecular forces in that liquid:Strong intermolecular forces, Weak intermolecular forces high vapor... more
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04/29/21

General Chemistry 1
For small molecules and ions, arrange the intermolecular forces according to their relative strengths.List them from stronger to weaker ion-ion forces hydrogen bonds dipole-dipole forces ion-dipole... more
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04/29/21

General Chemistry 1
A 9.75 L container holds a mixture of two gases, gas A and gas B, at 25 degrees celcius. The partial pressures of gas A and gas B are 0.419 bar and 0.511 bar, respectively. A 0.130 mol sample of a... more
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04/29/21

General Chemistry 1
A gaseous mixture is made by combining 2.06g Ar and 3.26g Kr in an evacuated 2.50 L container at 25.0 °C. Calculate the partial pressures of each gas and the total pressure exerted by the... more
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04/28/21

Chapter 9 Test Review
Place the following elements in order of increasing ionization energy: Li, F, C, K, He, Cs
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04/28/21

Chapter 9 Test Review
Place the following elements in order of increasing atomic size: Sr, Br, Ag, Ra, I, Sn
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04/28/21

Chapter 9 Test Review
Which is larger, K or Rb? Why?
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04/28/21

How many mL of 0.500 M NaI would be required to make a 0.0350 M solution of NaI when diluted to 275.0 mL with water?
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04/28/21

How many mL of 0.100 M NaCl would be required to make a 0.0355 M solution of NaCl when diluted to 150.0 mL with water?
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04/28/21

Chemistry Question
What is the concentration (M) of hydronium ions [H^ + ]= ? In a 0.025 M solution of HCl * (aq)
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04/28/21

Chemistry question
Consider the following reaction C(s) + 2 H 2 (g) <=> CH 4 (g) + heat An increase in the amount of hydrogen will cause a shift in equilibrium to
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04/28/21

Question about phase change calorimetry! Help
Hello, so we've recently conducted a calorimetry experiment wherein we had to mimic an isolated system by melting ice cubes in hot water.The questions are: Calculate the heat exchanged in the... more
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04/28/21

Integrated Rate Law Calculations: 1st Order
The decomposition of nitramide in aqueous solution at 25°CNH,NO₂(aq)N₂O(g) + H₂O(I)is first order in NH₂NO2 with a rate constant of 0.0000470 ¹.If the initial concentration of NH2NO2, is 0.800 M,... more
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04/28/21

Titration: Molarity of Acid/Base
An aqueous solution of perchloric acid is standardized by titration with a 0.110 M solution of calcium hydroxide.If 24.2 mL of base are required to neutralize 24.3 mL of the acid, what is the... more
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04/28/21

Determine Rate Law: Initial Rates
The following initial rate data are for the reaction of UO2+ with hydrogen ion in aqueous solution:2 UO2+ + 4 H+U4+ + UO22+ + 2 H2O Experiment [UO2+]o, M [H+]o, M Initial Rate, M... more
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