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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
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How many grams of sodium are in 3 moles of sodium carbonate Na2Co3 Give your answer to the nearest gram?
3 x 2 x 23 = 138g
How many moles are in 454 grams in sodium?
atomic waight of hydrogen = 1.0079 weight of one mole of hydrogen = its atomic mass in grams(just like all elements). therefore 454g/1.0079g = 450.4 moles of hydrogen.
How many grams of sodium chloride is in 0.40 moles?
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 =============
How many moles of sodium atoms correspond to 1.56x1021 atoms of sodium?
1.56 X 10^21 atoms of sodium ( 1 mole Na/6.022 X 10^23) = 0.00259 moles sodium or 2.59 X 10^-3 moles sodium
How many sodium ions are in 25.75 grams of sodium chloride?
About 265,000,000,000,000,000,000,000. (2.65 X 10^23)
(How many grams are there in 2.1 moles of sodium (Na- 23?
22.98977 grams.
How many moles in 43 grams of sodium sulphate?
6.066 into 10(up 23 )
How many atoms of sodium are present in 3 moles of sodium and what is mass of it?
each mole contains 6.022*10(raised to the power 23) so three moles of sodium contain 18.066*10(raised to the power 23) mass of one mole of sodium is 11 grams so mass of three moles of sodium is 33 grams
How many moles are in 46.0 g of sodium?
Atomic Weight sodium = 23 so 46/23 = 2 moles of sodium in 46.0g
How many grams of sodium are in 3 moles of sodium carbonate Na2Co3 Give your answer to the nearest gram?
3 x 2 x 23 = 138g
How many grams of sodium are in 3 moles of sodium carbonate (Na2CO3) Give your answer to the nearest gram.?
3 x 2 x 23 = 138g
How many moles are in 23 g of Fe?
23 grams iron ( 1mole Fe/55.85 grams) = 0.41 moles of iron
What is the number of moles of H2 produced when 23 grams of sodium reacts with water?
The answer is o,5 mol.
How many moles are in 454 grams in sodium?
atomic waight of hydrogen = 1.0079 weight of one mole of hydrogen = its atomic mass in grams(just like all elements). therefore 454g/1.0079g = 450.4 moles of hydrogen.
How many grams of sodium chloride is in 0.40 moles?
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 =============
How many grams of sodium chloride is obtained by the action of chlorine with 4 moles sodium?
A mole of an element or compound is 6.022 x 1023 (Avogadro's constant) molecules of that substance. This number is the number of molecules it takes for an amount of substance to have a mass in grams the same as its molecular mass: carbon has a molecular mass of 12, so 6.022 x 1023 (one mole) carbon atoms have a mass of 12 grams. The molecular mass of sodium is 23 (22.989) so one mole of sodium has a mass of 23 grams. Sodium chloride has a molecular mass of 58.44 so a mole of NaCl is 58.44 grams. One mole of sodium will make one mole of sodium chloride. Na + Cl => NaCl So four moles of sodium will make four moles of sodium chloride. 4Na + 4Cl => 4NaCl Four moles of NaCl has a mass of 4 x 58.44 = 233.76 grams.
How many moles of sodium oxide will be produced with 10 moles of sodium react with oxygen?
1 mole of Sodium Chloride weighs 58.5 grams (1 mole is the same as the molecular weight of a compound. The molecular mass of Sodium Chloride- NaCl is 23 [Na atomic mass] + 35.5 [Cl atomic mass] which is equal to 58.5 grams).Thus 10 moles would weigh 10x58.5 grams = 585 grams.The answer is 585 grams.
