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Luba_88 [7]
3 years ago
7

how many moles of water H2O contain 2.0 x 10^22 molecules of water? express the quantity in moles to two significant figures

Chemistry
1 answer:
sashaice [31]3 years ago
7 0
1 mole ------------- 6.02x10²³ molecules
?? moles ---------- 2.0x10²² molecules

( 2.0 x 10²² ) x 1 / 6.02x10²³ => <span>0.0332 moles of water</span>
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What is electrons configuration for arsenic ?
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What is the equilibrium constant of a reaction?
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8 0
3 years ago
(06.01 MC)
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7 0
3 years ago
C12H26O + SO3+NaOH ----&gt; C12H25NaSO4+ H2O
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Answer:

We can solve this by the method of which i solved your one question earlier

so again here molar mass of C12H25NaSO4 is 288.372 and number of moles for 11900 gm of C12H25NaSO4 will be = 11900/288.372

which is almost = 41.26 moles

so to get one mole of C12H25NaSO4 we need one mole of C12H26O

so for 41.26 moles of C12H25NaSO4 it will require 41 26 moles of C12H26O

so the mass of C12H26O = 41.26× its molar mass

C12H26O = 41.26×186.34

= 7688.38 gm!!

so the conclusion is If you need 11900 g of C12H25NaSO4 (Sodium Lauryl Sulfate) you need C12H26O 7688.38 gm !!

Again i d k wether it's right or wrong but i tried my best hope it helped you!!

4 0
3 years ago
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