The moles of product are formed is 0.0303 mol
The process we are interested in is
3Mg + N2 to Mg3N2.
N(Mg3N2) = n(Mg)/3 = 0.0303 mol moles of product were produced.
<h3>What is Moles ?</h3>
A mole is the mass of a substance that includes 6.023 x 10^23 of that substance's particles. The mole is the SI unit used to measure a substance's quantity. It has the symbol mol. As a result: One mole of carbon-12 weighs 12 grammes and has a carbon atom content of 6.022140857 x 10^23.
- In particular, in terms of mass, it serves as a bridge between the microscopic and the macroscopic. A unit (atom or molecules) has the same mass in grammes as a mole of a substance has in atomic mass units.
Hence, moles of product are formed is 0.0303 mol
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Answer:
3.4
Explanation:
The pH scale is used to express the acidity or basicity of a solution.
- If the pH < 7, the solution is acid.
- If the pH = 7, the solution is neutral.
- If the pH > 7, the solution is basic.
Given the hydronium ion concentration [H₃O⁺] = 3.8 × 10⁻⁴ M, we can calculate the pH using the following expression.
pH = -log [H₃O⁺]
pH = -log 3.8 × 10⁻⁴
pH = 3.4
This solution is acid.
Answer:
3.228x10⁻⁴ moles of Na2S2O3 are required
Explanation:
In iodometry, the reaction of KIO3 with Na2S2O3 is:
KIO3 + 6 Na2S2O3 + 6H⁺ → KI + 3Na2S4O6 + 3H2O + 6Na⁺
<em>Where 6 moles of Na2S2O3 reacts per moles of KIO3.</em>
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The moles of Na2S2O3 required to reach endpoint when 0.0000538 moles of KIO3 are:
0.0000538 moles of KIO3 * (6 moles Na2S2O3 / 1 mol KIO3) =
<h3>3.228x10⁻⁴ moles of Na2S2O3 are required</h3>
Critical thinking involves questioning and evaluating information. Critical and creative thinking both contribute to our ability to solve problems in a variety of contexts. Evaluating information is a complex, but essential, process. You can use the CRAAP test to help determine if sources and information are reliable.
The key critical thinking skills are: analysis, interpretation, inference, explanation, self-regulation, open-mindedness, and problem-solving.
Critical thinking skills are important because they enable students “to deal effectively with social, scientific, and practical problems” (Shakirova, 2007, p. 42). Simply put, students who are able to think critically are able to solve problems effectively. Merely having knowledge or information is not enough.
Hope it helps
Use the formula E=hv, h=plancks constant and v=frequency
use the formula c=v*lambda to find v
the answer will be 2.88*10^-23J