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The number of moles is equal to the mass divided by the molar mass. In mathematical form, it is:
Moles = Mass of Mg / Molar Mass of Mg
Moles = 109.4 / 24.3
Moles = 4.501 (rounded to three decimal points)
Always keep a Periodic Table handy, molar masses are quite important.
Wiki User
∙ 6y ago
To determine the number of moles in 109.4g of Mg, divide the given mass by the molar mass of Mg. The molar mass of Mg is approximately 24.305 g/mol. Therefore, 109.4g of Mg will contain approximately 4.5 moles.
Wiki User
∙ 13y agoTo find moles when given grams, divide the Atomic Mass of the element by the weight in grams. The atomic mass of Magnesium is 24.305, so you would divide 24.305 by 109.4, which equals .222166, or .2 when rounded according to significant figures.
Wiki User
∙ 11y agoAbout 4.5 moles.
Wiki User
∙ 13y ago4.50
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To calculate the number of moles of sodium borohydride in 100 mg, you need to know the molar mass of the compound, which is 37.83 g/mol. First, convert 100 mg to grams (0.1 g), then divide by the molar mass to get the number of moles, which is approximately 0.0026 moles.
How many moles of Pt are in a 455-mg ring of pure platinum?
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How many moles are in 225.8 g of Mg?
There are 18.9 moles in 225.8 mg. This is a math problem.
How many moles is 1.346g of Mg?
1.346 grams Mg (1 mole Mg/24.31 grams) = 0.05537 moles magnesium
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The answer is 0,615 moles.
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45 mg contains approximately 1.956 moles of atomic sodium.
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This is equivalent to 1,4 moles.
How many moles are in 1.2 mg of oxygen?
The molar mass of oxygen is 32 g.1,2 mg oxygen is equal to 0,0000375 moles.
How many moles are in 29.4mg of BrI?
29,4 mg of BrI is the equivalent of 0,000 143 moles.
How many moles are in 14.84 g Mg?
14,84 g magnesium are equivalent to 0,61 moles.
How many moles of sodium borohydride are used in 100 mg?
To calculate the number of moles of sodium borohydride in 100 mg, you need to know the molar mass of the compound, which is 37.83 g/mol. First, convert 100 mg to grams (0.1 g), then divide by the molar mass to get the number of moles, which is approximately 0.0026 moles.
How many moles are found in (4.58x101) E23 atoms Mg?
6,02214129.10ex.23---------------1 mol458.10ex.23---------------------------xx = 76,o5 moles Mg
What is the molarity of a solution of lii which contains 26800 mg of solute in a total volume of 0.282l?
0.0296 M solution means 1000 ml contains 0.0296 moles of LiI By applying unitary method we get, no. of moles of LiI in 258.6ml =.00765456 moles
