Determine # of moles 3.55× 10(23 squared ) atoms Ne
Answers
? moles ----------------- 3.55 x 10²³ atoms
moles = ( 3.55 x 10²³ ) x 1.0 / 6.02 x 10²³
moles = 3.55 x 10²³ / 6.02 x 10²³
= 0.589 moles of Ne
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Related Questions
10 Which statement correctly describes the location and charge of the electrons in an atom?F The electrons are inside the nucleus and have no charge.G The electrons are outside the nucleus and have no charge.H The electrons are inside the nucleus and have a negative charge.The electrons are outside the nucleus and have a negative charge.which is correct
What is the molar mass of a substance
The amount of oxygen formed when 12.26 g of KClO3 is heated is ________.
Regardless of how it is prepared or where a sample is collected from, water is always composed of 88.8% oxygen and 11.2% hydrogen by mass. this is an illustration of the
Answers
Answer: The correct answer for the blank is-
Investments and government expenses.
Gross domestic product (GDP) is the total goods and services value, which is produced within the boundary of a country during a particular year.
GDP is measured by expenditure method, which includes investment, government expenditure, net exports (Exports-Imports), and consumption.
Thus, investments and government expenses is the right answer for the blanks.
Answer:
A) investments, government expenses
Explanation:
I got it right on Odyssey!
chemical symbols.
c.
numbers in front of molecules.
b.
subscripts after atoms.
d.
reactants in the product.
Answers
Answer: Option (c) is the correct answer.
Explanation:
A chemical equation will be balanced when there are equal number of both reactants and products.
For example, is an unbalanced chemical equation.
As there are two molecules of Cl on reactant side and there is only one molecule of Cl present on product side.
Therefore, to balance this chemical equation we will place the numbers in front of molecules as follows.
Thus, we can conclude that a chemical equation is balanced by changing or adding numbers in front of molecules.
A chemical equation is balanced by changing or adding numbers in front of molecules. The correct answer is option c.
A chemical equation is a symbolic representation of a chemical reaction in which the reactant molecules are on the left side and the product molecules are on the right side, with an arrow separating them to indicate the direction of the reaction.
- Numbers in front of molecules are called coefficients, and they represent the number of molecules of each substance involved in the reaction. By changing the coefficients, you can balance the number of atoms on both sides of the equation.
Therefore, the correct answer is option c. numbers in front of molecules.
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Answers
Answers
Answer:
B) weight
Thats it no explanation
Answer:
B) weight
Explanation:
Weight is gravity's pull on an object. This would change if you went to the moon. Gravitational
Mass is the amount of the object. This would stay the same if you went to the moon. Non-gravitational
Answers
Answers
3 moles O₂ -------------> 2 moles Al₂O₃
? moles O₂ --------------> 1.00 mole Al₂O3
O₂ = 1.00 * 3 / 2
O₂ = 3 / 2
= 1.5 moles of O₂
Molar mass O₂ = 32.0 g
1.5 * 32.0 = 48 g of O₂
hope this helps!
Grams of the gas can be estimated by multiplying the moles and the molar mass. To produce 1 mole of aluminum oxide, 48 gms of oxygen is required.
What is mass?
The mass of the substance is the product of the moles and the molar mass of the given substance.
The balanced chemical reaction is shown as:
4 Al (s) +3 O₂ (g) → 2 Al₂O₃ (s)
From the above reaction, it can be concluded that:
3 moles of oxygen = 2 moles of aluminum oxide
So, x moles of oxygen = 1.00 moles of aluminum oxide
x is calculated as:
x = 3 ÷ 2 = 1.5 moles
Mass of oxygen:
mass = moles × molar mass
= 1.5 × 32
= 48 gms
Therefore, 48 gms of oxygen is required to produce 1 mole of aluminum oxide.
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