03/09/21

In some aquatic ecosystems, nitrate (NO3–) is converted to nitrite (NO2–), which then decomposes to nitrogen and water.

As an example of this second reaction, consider the decomposition of ammonium nitrite: NH4NO2(aq) ==> N2(g)+2H2O(l)What would be the change in pressure in a sealed 10.0 L vessel due to the... more
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03/09/21

Finding Kp Value
An equilibrium is established for the reaction 2 CO(g) + MoO₂(s) ⇌ 2 CO₂(g) + Mo(s). Use the expression for Kp from part a. If at equilibrium the partial pressure of carbon monoxide is 5.21 atm and... more
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03/09/21

Temperature of Reaction
Determine the temperature of a reaction if K = 1.20 x 10⁻⁶ when ∆G° = +17.70 kJ/mol.
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03/09/21

Chemistry II Partial Pressure
For the reaction A (g) → 3 B (g), Kp = 0.783 at 298 K. What is the value of ∆G for this reaction at 298 K when the partial pressures of A and B are 5.70 atm and 0.250 atm?
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03/09/21

Q Value Chem II
For the reaction A (g) → 2 B (g), K = 14.7 at 298 K. What is the value of Q for this reaction at 298 K when ∆G = -19.3 kJ/mol?
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03/09/21

Equilibrium Partial Pressure of C
An empty steel vessel is charged with 0.400 atm of C and 0.400 atm of A. Once the system reaches equilibrium according to the reaction below, what is the equilibrium partial pressure of C? Kp for... more
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03/09/21

Finding Equilibrium Constant
For the reaction: 2 A (g) + B (s) ⇌ 2 C (s) + D (g) At 298 K in a 10.0 L vessel, the equilibrium values are as follows: 0.721 atm of A, 4.18 mol of B, 6.25 mol of C, and 6.01 atm of D. What is the... more
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03/09/21

Reaction Quotient: Calculate
Consider the following reaction where Kc = 55.6 at 698 K.H2(g) + I2(g) 2HI(g)A reaction mixture was found to contain 4.49×10-2 moles of H2(g), 4.26×10-2 moles of I2(g) and 0.289 moles of HI(g), in... more
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03/09/21

What is the skeletal equation for sodium chloride + silver sulfate --> sodium sulfate + Silver Chloride

(include the states of matter: use the solubility table)
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03/09/21

Calculate K from Equilibrium Concentrations: Heterogeneous
The equilibrium constant, Kc , for the following reaction is 5.10×10-6 at 548 K.NH4Cl(s) NH3(g) + HCl(g)If an equilibrium mixture of the three compounds in a 7.66 L container at 548 K... more
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03/09/21

Ksp: Calculate from Solubility (mol/L)
A student measures the CN- concentration in a saturated aqueous solution of silver cyanide to be 1.14×10-8 M.Based on her data, the solubility product constant for silver cyanide is ______.
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03/09/21

Ksp: Calculate from Solubility (mol/L)
A student measures the Pb2+ concentration in a saturated aqueous solution of lead hydroxide to be 4.02×10-6 M.Based on her data, the solubility product constant for lead hydroxide is ______.
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03/09/21

Precipitation: Q vs K, Calculate
When 25.0 mL of a 6.93×10-4 M silver acetate solution is combined with 18.0 mL of a 7.24×10-4 M ammonium sulfide solution does a precipitate form? fill in the blank 1 _______(yes or no)For these... more
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03/09/21

General Chemistry I
Hello.I am taking General Chemistry I. I have a homework question that I do not know how to solve.It tells me that zinc is more reactive than chromium, and that chromium is more reactive than... more
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03/09/21

If a buffer solution is 0.270 M in a weak acid ( 𝐾a=5.4×10−5) and 0.500 M in its conjugate base, what is the pH?

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03/08/21

Complete the balanced molecular reaction for the following weak base with a strong acid:
NaClO2(aq)+H2SO4(aq) //
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03/08/21

How many moles of NaOH need to be added to 200.0 mL of a 0.200 M solution of HF to make a buffer with a pH of 4.00? (Ka for HF is 6.8 × 10⁻⁴)
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03/08/21

Radioactivity and Half-life
A rock containing 1mg of plutonium-239 is found in a glacier. The half-life of plutonium-239 is 25,000 years. If the rock was deposited 100,000 years ago during an Ice Age, how much plutonium-239... more
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03/08/21

The pH of a 1.0 M sodium acetate solution is:
The pH of a 1.0 M sodium acetate solution is:7.0> 7.0< 7.0cannot tellnone of these
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03/08/21

Instuctions: Answer the following questions regarding the reaction of mercury(II) chloride with potassium sulfide
Valences:Hg=+2 Cl=-1K=+1 S=-21.) Write the balanced chemical equation.2.) Write the ionic equation. Determine which compounds are aqueous and which compound will precipitate.3.) Write... more
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03/08/21

What is The relationship of the mole and how to calculate the number of atoms and molecules using the mole concept?
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03/08/21

Al ​+​FeO​à​Fe ​+​Al2O3​Given .30 mol Al

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03/08/21

How will the pH change if basic solution is added to mixture of acid and a buffer? (Will pH change significantlyand in what direction, higher or lower?)
This is a physiological chemistry question
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03/08/21

Acid or Base equation?
Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous... more
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03/08/21

Chemistry HW help
How many moles of potassium iodide must be dissolved in 3.5Kg of water to produce a 0.060 molal KI solution?
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