First of all, we should know what a mole and molar mass of an element means. Then answering this question would be easy.
Mole is a number( like pi, 1, 2, etc.). It is approximately 6.0225 *1023 . 1 mole of anything is same as the number of atoms in 12 grams of Carbon C12 sample. The mass of mole of an element/compound is called it's molar mass expressed in grams. The molar mass of a monoatomic element is equal to it's mass number.
So, we know Ca's mass number = 40.
that means 1 mole of Ca weighs 40 grams.
=>1/40 mole of Ca weighs 1 gram.
=>(1/40)*23 moles of Ca weighs 23.0 gram.
=>0.575 moles of Ca weighs 23.0 gram.
So there are 0.575 moles of Ca atoms in 23.0g of Ca
To convert moles to grams, you need to use the molar mass of sodium. The molar mass of sodium is about 23 grams per mole. Therefore, 4.5 moles of sodium would be approximately 103.5 grams (4.5 moles * 23 grams/mole).
To calculate the number of moles in 454 grams of sodium, you need to divide the given mass by the molar mass of sodium. The molar mass of sodium is approximately 23 grams/mol. Therefore, 454 grams of sodium is equal to 454/23 = 19.74 moles of sodium.
3 moles of sodium carbonate (Na2CO3) contain 6 moles of sodium ions (Na). Since the molar mass of sodium is about 23 g/mole, there would be approximately 138 grams of sodium in 3 moles of sodium carbonate.
To find the number of moles in 120 grams of sodium, divide the given mass by the molar mass of sodium. The molar mass of sodium is approximately 23 grams per mole. Therefore, 120 grams of sodium is equal to 120/23 ≈ 5.22 moles of sodium.
To calculate the mass of 4.00 moles of sodium, you can use the molar mass of sodium which is approximately 23 grams/mol. Therefore, 4.00 moles of sodium would have a mass of 4.00 moles * 23 grams/mole = 92 grams.
22.98977 grams.
3 x 2 x 23 = 138g
6.066 into 10(up 23 )
To convert moles to grams, you need to use the molar mass of sodium. The molar mass of sodium is about 23 grams per mole. Therefore, 4.5 moles of sodium would be approximately 103.5 grams (4.5 moles * 23 grams/mole).
To calculate the number of moles in 454 grams of sodium, you need to divide the given mass by the molar mass of sodium. The molar mass of sodium is approximately 23 grams/mol. Therefore, 454 grams of sodium is equal to 454/23 = 19.74 moles of sodium.
3 moles of sodium carbonate (Na2CO3) contain 6 moles of sodium ions (Na). Since the molar mass of sodium is about 23 g/mole, there would be approximately 138 grams of sodium in 3 moles of sodium carbonate.
To find the number of moles in 120 grams of sodium, divide the given mass by the molar mass of sodium. The molar mass of sodium is approximately 23 grams per mole. Therefore, 120 grams of sodium is equal to 120/23 ≈ 5.22 moles of sodium.
To calculate the mass of 4.00 moles of sodium, you can use the molar mass of sodium which is approximately 23 grams/mol. Therefore, 4.00 moles of sodium would have a mass of 4.00 moles * 23 grams/mole = 92 grams.
The molar mass of sodium is approximately 23 grams per mole. Therefore, 2 moles of sodium would weigh around 46 grams.
Molarity = moles of solute/Liters of solution ( 300 ml = 0.300 Liters ) For our purposes, Moles of solute = Liters of solution * Molarity Moles NaCl = 0.300 Liters * 0.15 M = 0.05 moles NaCl =============
3 moles of sodium carbonate (Na2CO3) contain 6 moles of sodium ions (2 sodium ions per molecule of sodium carbonate). The molar mass of sodium is 23 g/mol, so 6 moles of sodium is approximately 138 grams in total.
molecular formula for sodium chloride = NaClIf the mole (n) for NaCl = 5.3 moles, then the mole of sodium (Na) = 5.3 moles as well. 1 to 1 ratio mass = moles X molar mass m = 5.3 x 22.9 = 121.37 grams of sodium in 5.3 moles of sodium chloride