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Misha Larkins [42]
3 years ago
14

Need help fast!!!!!!!!!!!

Chemistry
1 answer:
icang [17]3 years ago
3 0
I think it’s the second one!! Hope this helps! BRANLIEST plzzzz
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What volume of 12.0 M sulfuric acid is needed to prepare 300.0 mL of 2.50 M solution?
Zepler [3.9K]

Answer:

n=c*V

=2.50*300x10^-3

=.75 moles of hcl

v=n/c

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convert to mL

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3 years ago
Sodium carbonate (na2co3) is used to neutralize the sulfuric acid spill. how many kilograms of sodium carbonate must be added to
gayaneshka [121]
THe balanced chemical reaction would be:
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We first convert the mass of sulfuric acid solution to moles by the molar mass. Then, we relate H2SO4 with Na2CO3 from the reaction. We do as follows:

<span>6.05×10^3 kg H2SO4 ( 1 kmol / 98.08 kg) ( 1 kmol Na2CO3 / 1 kmol H2SO4 ) ( 105.99 kg / kmol ) = 6537.92 kg Na2CO3 needed</span>
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Draw the Lewis structure for sulfur tetrafluoride, SF4
Vlad [161]

Notes:-

  • S has Z=16

Electronic configuration

  • 1s²2s²2p⁶3s²3p⁴

So

  • Valency is 4 and 6

  • Three fluorine atoms take 3 electrons and one lone pair present over S
  • As one electron remains unshared so we use + sign .

6 0
2 years ago
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