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What is the molar mass of H2O to the nearest whole number?
18g/mol
What percentage composition of Al2O3 is aluminum?
Molar Mass of Al: 2(27.0g/mol) = 54.0g/mol Molar Mass of O: 3(16.0g/mol) = 48.0g/mol Molar Mass of compound: 102.0g.mol (54.0g/mol / 102.0g/mol) x 100% = 52.9%
What is 4.00260 rounded to in atomic mass?
It is 4.0026 : the atomic mass can be a fraction.
What To two decimal places what is the relative atomic mass and the molar mass of the element potassium K?
It is 38.96
What is the two decimal places of relative atomic mass and the molar mass of the element potassium K?
It is 39.10
What is the molar mass of H2O to the nearest whole number?
18g/mol
What is the molar mass of CO2 rounded to the nearest whole number?
The answer is simple it's one/1
Is avogadro's number the same as molar mass?
no youre thinking of molar mass and atomic weight although you use avogadro's number to find molar mass
How is the number of moles of an element determined from the known mass?
To determine the number of moles of an element from its known mass, you can use the formula: moles = mass / molar mass. First, find the molar mass of the element from the periodic table. Then, divide the given mass of the element by its molar mass to find the number of moles.
A sample of a compound contain 1.52 g of Nitrogen and 3.47 g of Oxygen. The molar mass of this compound is between 90 grams and 95 grams. Determine molecular formula and the accurate molar mass.?
To find the molecular formula, first calculate the moles of nitrogen and oxygen present in the sample using their individual molar masses. Then determine the simplest whole-number ratio of nitrogen to oxygen atoms. From the given molar mass range, you can determine which whole-number ratio fits a compound with a molar mass between 90 and 95 grams/mol. This will give you the molecular formula and accurate molar mass of the compound.
What does the molar mass of C7H16 and the molar mass of CaCO3 have the same number of?
Both C7H16 and CaCO3 have a molar mass of approximately 116 grams per mole.
How is the number of moles determined from a known mass?
Number of moles = Total mass/Molar mass
Molar mass of Li?
The molar mass of lithium (Li) is approximately 6.94 grams per mole.
The number of moles of oxygen in the reaction vessel is?
To calculate the number of moles of oxygen in the reaction vessel, you need to know the amount of oxygen in grams and its molar mass. Then divide the mass of oxygen by its molar mass to obtain the number of moles. The formula to calculate the number of moles is: moles = mass / molar mass.
How is the number of moles of an element determined from known mass?
The molar mass is the measurement of mass per one mole of a substance. If the mass of a matter is known, divide it from the molar mass to obtain the number of moles.
Is molar mass differ in isoelectronic compound?
No, the molar mass does not differ in isoelectronic compounds. Isoelectronic compounds have the same number of electrons and therefore the same atomic mass, resulting in the same molar mass.
How do you work out the number of moles of unknown compound if you are only given the molar mass?
To find the number of moles from molar mass, divide the mass of the compound by its molar mass. The formula is: Moles = Mass (g) / Molar Mass (g/mol). This will give you the number of moles of the unknown compound.
