02/24/21

Estimate the Henry’s constant for the solubility of this compound in water at 25°C.
A flask containing 706 mL of water at 25°C was exposed to 0.368 mmHg of a gaseous compound until a solubility equilibrium was established. The measured equilibrium concentration of the dissolved... more
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02/24/21

Chemistry Stoichiometry Mass to Mass Calculations
If 33.0 grams of aluminum reacts with an excess of copper (II) chloride, what amount of pure    copper will be produced? Balanced Equation: 2Al+3CuCl2*2AlCl3+3Cu 
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02/24/21

Chemistry: Mechanisms
A student proposed the following mechanism for the gas phase reaction of fluorine with chlorine dioxide......step 1.....fast:......2 ClO2  Cl2O4.....step 2.....slow:....Cl2O4 + F2  2 FClO2(1) What... more
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02/24/21

Chemistry: Mechanisms
The following mechanism has been proposed for the gas phase reaction of nitrogen monoxide with bromine......step 1.....fast:......NO + Br2  NOBr2.....step 2.....slow:....NOBr2 + NO  2 NOBr(1) What... more
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02/24/21

Chemistry: Mechanisms
The following mechanism has been proposed for the conversion of tert-butyl bromide to tert-butyl alcohol in aqueous solution:step 1  slow:  (CH3)3CBr  (CH3)3C+ + Br-step 2  fast:   (CH3)3C+ +... more
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02/24/21

Chemistry: Mechanisms
The decomposition of hydrogen peroxide in the presence of potassium iodide is believed to occur by the following mechanism:step 1  slow:  H2O2 + I-  H2O + OI-step 2  fast:   H2O2 + OI-  H2O + O2 +... more
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02/24/21

Arrhenius Equation
The activation energy for the gas phase isomerization of cis-cyanostyrene is 193 kJ.cis-C6H5CH=CHCNtrans-C6H5CH=CHCNThe rate constant at 672 K is 3.87×10-4 /s. The rate constant will... more
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02/24/21

Grade 12 Chemistry ~ Ionization energy
The following data concerns the ionization energies of a given atom:EI1 = 738 kJ / mol; EI2 = 1451 kJ / mol; EI3 = 7733 kJ / mol. Predict the configuration of the valence electrons of this atom and... more
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02/24/21

A 1.5 mol L-1 potassium hydroxide solution has a density of 1.33 g mL -1. What is the molality of the solution?
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02/24/21

chemistry hw Calculate the density of a NH3 gas having a pressure of 34mmHg and a temperature of 233K.

Calculate the density of a NH3 gas having a pressure of 34mmHg and a temperature of 233K.
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02/24/21

chemistry hw If a molecule of H2 diffuses a speed of 340 m/s from a point source, calculate the speed that a molecule of O2 would diffuse under the same conditions for the same period of time.
If a molecule of H2 diffuses a speed of 340 m/s from a point source, calculate the speed that a molecule of O2 would diffuse under the same conditions for the same period of time.
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02/24/21

chemistry hw How much faster does H2 travel than Ar gas?
How much faster does H2 travel than Ar gas?
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02/24/21

chemistry hw Calculate the volume of a N2 having a pressure of 2.33atm, temperature of 43oC and a mass of 34g.

Calculate the volume of a N2 having a pressure of 2.33atm, temperature of 43oC and a mass of 34g.
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02/24/21

chemistry hw Calculate the partial pressure of N 2 gas knowing that the gas mixture had a total pressure of 234KPa and that the partial pressure of O 2 is 122KPa and that of Ar is 34KPa.(Answer=
Calculate the partial pressure of N 2 gas knowing that the gas mixture had a total pressure of 234KPa and that the partialpressure of O 2 is 122KPa and that of Ar is 34KPa.
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02/24/21

Some of the sulfur dioxide released into the atmosphere is converted to sulfuric acid according to the equation 2SO 2 +2H 2 O+O 2 =2H 2 SO 4 .
How many moles of oxygen are formed from 167.43 g of sulfur dioxide. Provide your final answer rounded to two decimal places.
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02/24/21

The octane present in gasoline burns according to the following equation: 2 C 8 H 18 + 25 O 2 = 16 CO 2 +18 H 2 O If this reaction is to be used to synthesize 1,15 moles of CO 2
how many moles of octane are needed ?
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02/24/21

Molar Mass from osmotic pressure
When 2.63 g of a polypeptide is dissolved in 237 mL of water, the resulting solution is found to have an osmotic pressure of 0.125 atm at 37.0 °C. What is the molar mass of the polypeptide? (Assume... more
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02/23/21

Net ionic equation
Write the net ionic equation for the chemical reaction shown. Include physical states.HClO2(aq)+NaOH(aq)⟶H2O(l)+NaClO2(aq)
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02/23/21

CHEMISTRY SCIENTIFIC NOTATION
Write the following numbers in scientific notation:1. 78000 grams =  x 10  2. 54.056 cubic meters =  x 10  3. .00650 hectoliters =  x 10  4. 100000 kiloseconds =  x 10  5. .000005 Megamoles =  x 10 
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02/23/21

2 C 8 H 18 +25 O 2 + 16 CO 2 +18 H 2 O, if this reaction is to be used to synthesize 1.15 moles of CO2, how many moles of octane are needed?
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02/23/21

Express your answer as an isotope.
an isotope with four protons and five neutrons
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02/23/21

Predict the products if the following are mixed
Lithium and magnesium chloride___ ___ ___ ___ + ___ ___
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02/23/21

Complete the following reaction
___ + ZnBr2--> No Reaction
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02/23/21

Chemistry Hw help If a molecule of CH4 diffuses a speed of 340 m/s from a point source, calculate the speed that a molecule of N2 would diffuse under the same conditions for the same period of time.
If a molecule of CH4 diffuses a speed of 340 m/s from a point source, calculate the speed that a molecule of N2 would diffuse under the same conditions for the same period of time.
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02/23/21

Chemistry Hw help Compare the rate of diffusion of carbon dioxide (CO2) & ozone (O3) at the same temperature.
Compare the rate of diffusion of carbon dioxide (CO2) & ozone (O3) at the same temperature.
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