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How many atoms are in 165 g of calcium?
To find the number of atoms in 165 g of calcium, you first need to determine the number of moles by dividing the mass by the molar mass of calcium (40.08 g/mol). Then, you can use Avogadro's number (6.022 x 10^23 atoms/mol) to convert moles to atoms.
How many atoms are in 127 g of calcium?
The gram atomic mass of calcium is 40.08. Therefore, 127 g of calcium constitutes 127/40.08 or 3.69 gram atomic masses. By definition of Avogadro's Number, each gram atomic mass contains Avogadro's Number of atoms. Therefore, the answer is 3.69 X Avogadro's Number or 1.91 X 1024 atoms, to the justified number of significant digits.
How many moles are in gram of NaOH?
moles = mass/Mr moles = 100/(23+16+1) moles of NaOH = 2.5mol
How many moles of sodium hydroxide are in 40 grams of sodium hydroxide?
To find the number of moles in 40 grams of sodium hydroxide, you first need to calculate the molar mass of NaOH. The molar mass of NaOH is about 40 g/mol. Then, you divide the given mass by the molar mass to get the number of moles. So, 40 grams divided by 40 g/mol is equal to 1 mole of NaOH.
How many moles of lithium hydroxide are required to react with 20 mol of CO2?
The balanced chemical equation for the reaction of lithium hydroxide with carbon dioxide is 2 LiOH + CO2 -> Li2CO3 + H2O. The mole ratio of LiOH to CO2 is 2:1, meaning that 40 moles of LiOH are required to react with 20 moles of CO2.
How many moles of carbon and hydrogen are there in 5 moles of octane?
In 5 moles of octane, C8H18, there are 40 moles of carbon atoms (5 moles octane x 8 carbon atoms) and 90 moles of hydrogen atoms (5 moles octane x 18 hydrogen atoms).
How many moles of hydrogen atoms does 5 moles of propane molecules contain?
Since propane has the formula C3H8, each mole of propane will have 8 moles of hydrogen atoms, so 5 moles of propane will contain 5x8=40 moles of hydrogen.
What can make 20 moles of sodium chloride?
To make 20 moles of sodium chloride, you would need 20 moles of sodium ions and 20 moles of chloride ions. This could be achieved by combining 40 moles of sodium atoms with 40 moles of chlorine atoms to form 20 moles of sodium chloride.
Cyclopentane has the molecular formula C5H10 How many moles of hydrogen atoms are there in 4 moles of cyclopentane?
The conversion. 4 mol C5H10 ( 10 mol H/1 mol C5H10 ) = 40 mol Hydrogen.
How many atoms are in 159g of calcium?
To find the number of atoms in 159g of calcium, you need to first calculate the number of moles of calcium present using the molar mass of calcium. The molar mass of calcium is approximately 40 g/mol. Then, you can use Avogadro's number (6.022 x 10^23 atoms/mol) to convert moles of calcium to atoms. Calculate the number of moles of calcium in 159g using the formula: moles = mass (g) / molar mass (g/mol). Finally, multiply the number of moles by Avogadro's number to determine the number of atoms in 159g of calcium.
How many moles of calcium atoms are in 45.8 g of Ca?
To determine the number of moles of calcium atoms in 45.8 g of Ca, first find the molar mass of calcium (Ca) from the periodic table (40.08 g/mol). Then, divide the given mass by the molar mass of Ca to get the number of moles. In this case, 45.8 g of Ca is equal to 1.14 moles of Ca atoms.
How many moles of calcium are in a sample of 40 g?
There are approximately 1 mole of calcium in 40 g, as the molar mass of calcium is about 40 g/mol.
How many atoms are there in 4H2SO4?
4H2SO4 = 4*(2(H)+1(S)+4(O)) = 4*(2+1+4) = 4*7 = 28 There are 28 atoms in 4 moles of H2SO4.
How many atoms are in 165 g of calcium?
To find the number of atoms in 165 g of calcium, you first need to determine the number of moles by dividing the mass by the molar mass of calcium (40.08 g/mol). Then, you can use Avogadro's number (6.022 x 10^23 atoms/mol) to convert moles to atoms.
How many hydrogen atoms are in a cup of milk?
potassium-40 atoms
How many atom are in 143g of calcium?
First, look up the atomic mass of calcium: 40.08 grams per mole 143 grams, divided by 40.08 grams per mole, results in 3.57 moles. Since you specifically asked for the number of ATOMS, multiply by Avogadro's number, 6.02 x 10-to-the-23rd-power atoms per mole. Final answer: 2.15 x 10-to-the-24th power atoms.
How many atoms are in 169 g of calcium?
To calculate the number of atoms in a sample of calcium, you need to first determine the moles of calcium in 169 g. Then, you can use Avogadro's number (6.022 x 10^23 atoms per mole) to find the number of atoms. The atomic mass of calcium is 40.08 g/mol, so 169 g of calcium is approximately 4.22 moles. Multiplying this by Avogadro's number gives approximately 2.54 x 10^24 atoms in 169 g of calcium.
