11 Answered Questions for the topic Chemical

05/27/22

Determine if the reaction is spontaneous or not:
a. 3 Li + Al ⟶ 3 Li + Al3+ E ̊ = - 1.39 V
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11/22/21

The chemical reaction involved is the decomposition of Hydrogen iodide gas into Hydrogen gas and Iodine gas. Starting with 0.900 mol of Hl in an evacuated 2.0-L flask and with Kc=0.014,
what is the molar concentration of hydrogen iodide gas at equilibrium?
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Chemical Chemistry

11/13/20

How to solve this chemistry question?
Q1. Decomposition of H2O2 is shown below2H2O2 (l) ----------> 2H2O (l) + O2 (g)At the end of the reaction, 0.75 L of gas was collected over water at 25 °C and the total pressure measured was... more
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Chemical Chemistry

11/13/20

How to solve this chemistry question?
Q. Sodium hydroxide (4.00 g) and water (100.0 g) are both at 20.0 °C. When the sodium hydroxide is dissolved in the water using a coffee cup calorimeter, the solution’s temperature reached a... more
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10/02/20

About the chemistry calculation
1 moles of KClO3 = 122.55 grams1 moles of KCl = 74.6 grams1 moles of O2 = 31.9988 gramsMass of test tube + MnO2 -> 21.5403gMass of test tube + MnO2 + KClO3 + KCl -> 22.5518gConstant mass of... more
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10/02/20

My answer is correct? about the chemistry
Use the following reaction to answer question         MnO22 KClO3(s) --------------> 2 KCl (s) + 3 O2 (g)Complete the following statements.a. 2 moles of KC103 releases __________... more
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09/28/20

What is the formula of the cobalt(II) sulfate hydrate?
A student uses gravimetric determination to find the water of hydration of a hydrated sample of cobalt (II) sulfate. The student’s sample contained 0.0098459 moles of anhydrous cobalt(II) sulfate... more
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03/27/20

Chemistry question about chemical equilibrium
Why is a chemical equilibrium considered a dynamic equilibrium? Because both forward and reverse reactions continue, even though there is no net change. Because there is no net change in the... more
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11/24/19

An unknown metal absorbs 23.8J of heat, and its temperature increases by 15.4∘C. What is the heat capacity of the metal?
Round your answer to two decimal places.
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07/26/19

Chemical Engineering
How many moles contains 6 gram of carbon? -6 moles -12moles -1/2 moles -3 moles Mole=Weight in gm/Mol. Wt
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02/08/16

Equations for carboxylic acid
Write an equation for the reaction of ethyl ethanoate with dilute acid, Write a separate equation for the reaction of ethyl ethanoate with dilute alkali. Which one is the preferred method of... more
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