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How do you get the answer to number of moles in caffeine in 35.5g caffeine?
Sherrywood
Moles = Mass / Mr.
In this case Moles = 35.5 / Mr. of Caffeine
The Mr. of caffeine (C8H10N4O2) is 194.
Moles = 0.183 (rounded)
Wiki User
∙ 12y ago
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How many mol of oxygen in 3.5 mol of caffeine.?
The molecular formula for caffeine is C8H10N4O2. As can be seen each mole of caffeine contains TWO moles of O. Thus 3.5 moles caffeine x 2 moles O/mole caffeine = 7.0 moles oxygen
What mass of nitrogen in contained in 0.468 g of caffeine?
Molecular formula: C8H10N4O2 For every 1 mole of caffeine you have 4 moles of Nitrogen.
How many moles of caffeine C8H10O2N4 are contained in a 100. mg sample of caffeine?
The answer is 5,15.1e-4.
How many moles of caffeine are in a cup of caffeine?
70-120mg. Instant coffee on the low end and espressos with more.
How do you calculate milligrams of caffeine in 60 mL sample?
You have to know the concentration first. That will either be in grams per milliliter (or milligrams per milliliter), or it could be in moles per liter (molarity). If it's given in grams per milliliter, just multiply that number by 60 and multiply by 1000.If it's given in moles per liter, than first find how many moles in 60 mL by multiplying by 0.06, and then convert moles to grams using the molar mass of caffeine (194.19 grams per mole).See the Related Questions for how to convert moles to grams.
What mass of PCl 5 will be produced from the given masses of both reactants?
What mass of will be produced from the given masses of both reactants? 28.0 g/P4 / 123.9 g/P4 = 0.2260 moles/ P4 0.2260 moles /P4 * 4 moles PCl5/1 mole/P4=0.904 moles/PCl5 54.0 g/Cl2 / 70.9 g/Cl2 = .7616 moles/Cl2 .7616 moles / Cl2 *4 moles PCl5/10 moles Cl2=.30 This is about limiting reagents You need to use 2P + 5Cl2 --> 2PCl5 [or P4 + 10Cl2 --> 4PCl5 if you prefer] that tells you that 2P = 62g needs 5Cl2 = 355g Cl2 to react 69.3g
In chemistry converting from molecules to moles?
multiply the number of moles by Avogadroa number
Is number of moles vector or scalar?
There is no direction in number of moles, so it is scalar.
What is the number of moles in 0.025 g NH42Cr2O7?
The number of moles 9,92.10e-5.
The number of moles in 5604g of CsF?
36.9 moles.
What is the number of moles in 8.42g Na2CO3?
It is 0.0794 moles.
What is the number of moles in 0.135g of HNO2?
0.002872 moles.
