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How many lb-moles of substance are present in the given sample?
To determine the number of lb-moles in a sample, divide the weight of the sample in pounds by the molecular weight of the substance. This will give you the number of lb-moles present in the sample.
How many moles of a substance with an atomic mass unit (amu) of 12 are present in a given sample?
To find the number of moles in a sample, divide the sample's mass by the substance's atomic mass unit (amu). For a substance with an amu of 12, the number of moles in the sample can be calculated by dividing the sample's mass by 12.
How many moles of sulfur are present in a 16-g sample of sulfur?
To determine the number of moles of sulfur in a 16-g sample, you need to divide the mass by the molar mass of sulfur. The molar mass of sulfur is approximately 32 g/mol. Thus, 16 g/32 g/mol = 0.5 moles of sulfur in the sample.
How many moles of magnesium are in a sample of 56.4 of magnesium?
To determine how many moles of magnesium are in a sample of 56.4 g, you would first calculate the molar mass of magnesium (about 24.3 g/mol). Then, divide the mass of the sample by the molar mass to obtain the number of moles present (around 2.32 moles in this case).
How can one determine the number of moles in a substance when given its volume?
To determine the number of moles in a substance when given its volume, you can use the formula: moles volume (in liters) / molar volume (in liters per mole). The molar volume is a constant value that depends on the substance being measured.
How many lb-moles of substance are present in the given sample?
To determine the number of lb-moles in a sample, divide the weight of the sample in pounds by the molecular weight of the substance. This will give you the number of lb-moles present in the sample.
How do you find atoms if given molar mass?
To find the number of atoms in a sample when given the molar mass, first determine the number of moles by dividing the mass of the sample by the molar mass. Then, use Avogadro's number (approximately (6.022 \times 10^{23}) entities per mole) to convert moles to atoms by multiplying the number of moles by Avogadro's number. This will give you the total number of atoms in the sample.
How many moles of ammonium ions does a 22.5 gram sample of ammonium carbonate?
To calculate the number of moles of ammonium ions in a 22.5 gram sample of ammonium carbonate, you need to first determine the molar mass of ammonium carbonate. Then, divide the given mass by the molar mass to find the number of moles. After that, since there are 2 ammonium ions in one molecule of ammonium carbonate, you will need to multiply the result by 2 to determine the number of moles of ammonium ions.
How many moles of a substance with an atomic mass unit (amu) of 12 are present in a given sample?
To find the number of moles in a sample, divide the sample's mass by the substance's atomic mass unit (amu). For a substance with an amu of 12, the number of moles in the sample can be calculated by dividing the sample's mass by 12.
Where can you find a solution to problem solving number of moles in a given element?
Number of moles = Mass of the sample in g/Molar mass in g
How many moles of phosphorus?
The number of moles of phosphorus depends on the given quantity or mass of phosphorus. To calculate the number of moles, you need to know the molar mass of phosphorus (about 30.97 g/mol) and the mass of the sample. You can then use the formula moles = mass/molar mass to find the number of moles.
Determine the number of hydrogen ions when you are given 2 moles of water?
4 moles of hydrogen atoms
What is the total number of moles present in a 52.0 gram sample of NaN3 gram formula mass equals 65.0 mole?
To calculate the total number of moles in the 52.0 gram sample of NaN3, divide the given mass by the molar mass of NaN3. First, determine the molar mass of NaN3 by summing the atomic masses of its elements (sodium, nitrogen, and three times the atomic mass of nitrogen). Then, divide the mass of the sample by the molar mass of NaN3 to find the number of moles.
How would you determine the number of moles of aluminum in 96.7 grams of aluminum?
Number of moles = mass of the sample/atomic weight of Al = 96,7/26,987 = 3,58
How many moles of sulfur are present in a 16-g sample of sulfur?
To determine the number of moles of sulfur in a 16-g sample, you need to divide the mass by the molar mass of sulfur. The molar mass of sulfur is approximately 32 g/mol. Thus, 16 g/32 g/mol = 0.5 moles of sulfur in the sample.
How do you determine the empirical formula of a metal oxide?
To determine the empirical formula of a metal oxide, first determine the moles of metal and oxygen in a given sample. Then, divide the moles of each element by the smallest number of moles to get a whole number ratio. This ratio represents the empirical formula of the metal oxide.
How many moles of magnesium are in a sample of 56.4 of magnesium?
To determine how many moles of magnesium are in a sample of 56.4 g, you would first calculate the molar mass of magnesium (about 24.3 g/mol). Then, divide the mass of the sample by the molar mass to obtain the number of moles present (around 2.32 moles in this case).
