Vietnam: What is the formula for calculating the number of moles? Is the formula for calculating the number of moles included in the 8th-grade Natural Science curriculum?
What is the formula for calculating the number of moles?
The formula for calculating the number of moles is a mathematical expression that helps us determine the number of microscopic particles (atoms, molecules) present in a certain amount of a substance. In other words, it tells us how many moles of a substance are in a sample.
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The formula for calculating the number of moles In 8th grade, we often use the following formula to calculate the number of moles: n = m/M *Where: |
Note: The above information regarding the formula for calculating the number of moles is for reference only./.
What is the formula for calculating the number of moles? Is the formula for calculating the number of moles included in the 8th-grade Natural Science curriculum? (Image from Internet)
Is the formula for calculating the number of moles included in the 8th-grade Natural Science curriculum?
Under Section 5 of the General education program in Natural Sciences issued with Circular 32/2018/TT-BGDDT, the competencies required for 8th-grade students in the Natural Science subject in Vietnam include:
Required outcomes
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- State the law of conservation of mass
- Define the concept of a chemical equation and the steps to establish a chemical equation.
- Explain the significance of a chemical equation.
- Establish a schematic chemical reaction from words to a chemical equation (using chemical formulas) for specific chemical reactions.
- Define the concept of moles (atoms, molecules).
- Calculate the molar mass (M); Convert between moles (n) and mass (m)
- Define the concept of gas density and write the formula to calculate the gas density.
- Compare whether one gas is heavier or lighter than another using the formula for gas density.
- Define the concept of molar volume of gas at a pressure of 1 bar and 25°C.
- Use the formula n(mol) to convert between moles and gas volume under standard conditions: pressure of 1 bar at 25°C.
- Calculate the amount of substance in a chemical equation in terms of moles, mass, or volume under conditions of 1 bar and 25°C.
- Define the concept of reaction efficiency and calculate the efficiency of a reaction based on the theoretical amount and actual amount of product obtained.
- Define a solution as a homogeneous liquid mixture of solutes dissolved in each other.
- Define the solubility of a substance in water, percentage concentration, and molar concentration.
- Calculate solubility, percentage concentration, and molar concentration using formulas.
- Conduct experiments to prepare a solution with a given concentration.
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In the 8th-grade Natural Science curriculum, students learn about the concept of moles (atoms, molecules), and calculate the molar mass (M); Convert between moles (n) and mass (m).
Thus, according to the above regulations, the formula for calculating the number of moles will be taught in the 8th-grade Natural Science subject.
Will 8th-grade students with advanced achievement in Vietnam receive a certificate of merit?
Under Article 21 of Circular 22/2021/TT-BGDDT, the roadmap is regulated as follows:
Entry into force
1. This Circular comes into force from September 5, 2021 according to following roadmap:
- From school year of 2021-2022 for the 6th grade.
- From school year of 2022-2023 for the 7th and 10th grade.
- From school year of 2023-2024 for the 8th and 11th grade.
- From school year of 2024-2025 for the 9th and 12th grade.
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And based on Article 15 of Circular 22/2021/TT-BGDDT:
Commendations
1. Principals shall award certificates of merit for students
a) End-of-year commendation
- Award the title “Học sinh Xuất sắc” (Excellent student) for students who have obtained Excellent training and learning results for the entire school year and achieved DTBmcn of at least 9.0 in subjects that are assessed via both feedback and scores.
- Award the title “Học sinh Giỏi” (Good student) for students who have obtained Excellent training and learning results for the entire school year.
b) Commend students for having unexpected merits in training and learning in the school year.
2. Students with special achievements shall be considered and requested for commendation by schools.
Therefore, this regulation will apply to 8th-grade students in the 2024-2025 academic year. According to the regulation, the principal only awards certificates of merit to students with the titles "Excellent Student," "Good Student," and students with unexpected merits in training and learning in the school year.
Thus, 8th-grade students with advanced achievement do not receive certificates of merit.
