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A mole is a unit of measurement that contains a specific number (approximately 6.02 x 1023) of any given atom or molecule. Since different atoms and molecules have different weights, a mole of one substance does not weigh the same as a mole of another substance. To find out how much one mole (or 9 moles) of something weights, you have to have its chemical formula, and then look up the atomic weight of each atom in that formula, and calculate the molecular weight of the molecule you are dealing with (if it is just an atom, rather than a molecule, the process is that much simpler). Then you can determine the mass of 9 moles of that substance.
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A sample of cinnamaldehyde C9H8O contains 0.0976 mol of the compound What is the mass off the sample in grams?
To find the mass of the sample, we can use the formula: Mass = number of moles x molar mass First, calculate the molar mass of cinnamaldehyde (C9H8O) which is 912 + 81 + 1*16 = 132 g/mol. Then, multiply the number of moles (0.0976) by the molar mass to get the mass of the sample, which is 0.0976 mol * 132 g/mol = 12.91 grams.
If 9 grams of trivalent metal are combined with 8 grams oxygen the atomic weight of the metal will be?
To find the atomic weight of the metal, we first find the number of moles of metal by dividing its mass by its molar mass. Next, we find the number of moles of oxygen by dividing its mass by its molar mass. Since the metal is trivalent, we set up a ratio using their mole numbers to find the atomic weight of the metal.
A solution contains 180g of glucose C6H12O6 and 162 g of water What is the mole fraction of glucose?
To calculate the mole fraction of glucose, first find the moles of each component by dividing its mass by its molar mass. The molar mass of glucose (C6H12O6) is 180 g/mol. The moles of glucose is 180g / 180 g/mol = 1 mol. The moles of water is 162g / 18 g/mol = 9 mol. The total moles in the solution is 1 + 9 = 10 mol. The mole fraction of glucose is 1 mol / 10 mol = 0.1.
How do you calculate moles of atoms in 9.00g of magnesium nitrate?
First, determine the molar mass of magnesium nitrate (Mg(NO3)2) by adding the atomic masses of magnesium, nitrogen, and oxygen. Then, divide the given mass (9.00g) by the molar mass to find the moles of magnesium nitrate.
What is the molarity a 500.0 ml solution containing 0.75 moles of solute?
Molarity = moles of solute/Liters of solution Without the solute name the mass ( 8 grams ) does no good. Mass of solute (1 mole/molar mass of solute) = moles solute ----------------------then use Molarity equation. ( remember convert to liters )
What is the mass of 0.5 moles of water?
The mass of 0,5 moles of water is 9 g.
What is the mass of 9 moles of sodium?
The molar mass of sodium (Na) is approximately 22.99 g/mol. To find the mass of 9 moles of sodium, you would multiply the molar mass by the number of moles: 22.99 g/mol * 9 mol = 206.91 grams. Therefore, the mass of 9 moles of sodium is approximately 206.91 grams.
How many moles are in 3.4x10-7 grams of silicon dioxide?
To find the number of moles, we need to convert the given mass in grams to moles. The molar mass of silicon dioxide (SiO2) is approximately 60 grams/mol. Number of moles = (3.4x10^-7 grams) / (60 grams/mol) = 5.7x10^-9 moles.
What is the mass of 9moles of sodium?
Sodium has an atomic weight of 22.99 and therfore 9 moles has a mass of 206.91 g.
How many moles of mercury are in 1.00*10^9?
You do not say whether it is grammes or kilogrammes. assuming it to be grams. 1.0 x 10^9 g = 1,000,000,000 g The relative atomic mass of mercury is 200.6 Moles = mass (g / Ar Hence moles(Hg) = 1,000,000,000 / 200.6 = 4985044.865 moles.
A sample of cinnamaldehyde C9H8O contains 0.0976 mol of the compound What is the mass off the sample in grams?
To find the mass of the sample, we can use the formula: Mass = number of moles x molar mass First, calculate the molar mass of cinnamaldehyde (C9H8O) which is 912 + 81 + 1*16 = 132 g/mol. Then, multiply the number of moles (0.0976) by the molar mass to get the mass of the sample, which is 0.0976 mol * 132 g/mol = 12.91 grams.
If 9 grams of trivalent metal are combined with 8 grams oxygen the atomic weight of the metal will be?
To find the atomic weight of the metal, we first find the number of moles of metal by dividing its mass by its molar mass. Next, we find the number of moles of oxygen by dividing its mass by its molar mass. Since the metal is trivalent, we set up a ratio using their mole numbers to find the atomic weight of the metal.
A solution contains 180g of glucose C6H12O6 and 162 g of water What is the mole fraction of glucose?
To calculate the mole fraction of glucose, first find the moles of each component by dividing its mass by its molar mass. The molar mass of glucose (C6H12O6) is 180 g/mol. The moles of glucose is 180g / 180 g/mol = 1 mol. The moles of water is 162g / 18 g/mol = 9 mol. The total moles in the solution is 1 + 9 = 10 mol. The mole fraction of glucose is 1 mol / 10 mol = 0.1.
How do you calculate moles of atoms in 9.00g of magnesium nitrate?
First, determine the molar mass of magnesium nitrate (Mg(NO3)2) by adding the atomic masses of magnesium, nitrogen, and oxygen. Then, divide the given mass (9.00g) by the molar mass to find the moles of magnesium nitrate.
How many moles are in 9.8 grams of Calcium?
To find the number of moles in 9.8 grams of Calcium, you first need to calculate the molar mass of Calcium, which is about 40.08 g/mol. Then, divide the given mass by the molar mass: ( \frac{9.8 , \text{g}}{40.08 , \text{g/mol}} \approx 0.245 , \text{moles})
Which one has more molecules 9 g of water or 9 g of suger (C12 H22 O11)?
To determine which substance has more molecules, we need to calculate the number of moles for each substance using their respective molar masses. The molar mass of water (H2O) is approximately 18 g/mol, while the molar mass of sugar (C12H22O11) is about 342 g/mol. For 9 g of water, the number of moles is 9 g / 18 g/mol = 0.5 moles. For 9 g of sugar, the number of moles is 9 g / 342 g/mol ≈ 0.026 moles. Therefore, 9 g of water has more molecules because it contains 0.5 moles, which is significantly higher than the 0.026 moles in 9 g of sugar.
What is the molarity of a solution that contains 9.63 grams of HCl in 1.5 liters of solutions?
Molarity = moles of solute/Liters of solution Find moles NaCl 9 grams NaCl (1 mole NaCl/58.44 grams) = 0.154 moles NaCl Molarity = 0.154 moles NaCl/1 Liter = 0.2 M sodium chloride -------------------------------
