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Rus_ich [418]
3 years ago
7

Which value indicate the strongest base? 1. pH of 8 2. pH of 5 3. pH of 12

Chemistry
1 answer:
uranmaximum [27]3 years ago
6 0
Hello there! 

On a pH scale, strong bases usually are ranged at 12-14, so your answer is 3. pH of 12. Hope I helped! 

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Calculate the mass percent for all components in a solution containing the following. 0.350 Kg of water, 5.4 moles of ammonia an
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Answer:

  • % Water = 54.96%
  • % Ammonia = 0.14%
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Explanation:

To calculate mass percent, first we need to <u>calculate the total mass of the mixture</u>:

  • Mass Water ⇒ 0.350 kg Water = 350 g water
  • Mass Ammonia⇒We use ammonia's molar mass⇒5.4 mol * 17 g/mol =  91.8 g
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Total Mass = Mass Water + Mass Ammonia + Mass Cobalt Nitrate

  • Total Mass = 350 g+ 91.8 g+ 195 g = 636.8 g

To calculate each component's mass percent, we divide its mass by the total mass and multiply by 100:

  • % Water ⇒ 350/636.8 * 100% = 54.96%
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3 years ago
How many silicon atoms are there in 28.09 g of Si?
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Explanation:

28.09 g of silicon contains 6.02×1023 6.02 × 10 23 silicon atoms.

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A more reactive metal displaces a less reactive metal from salt solution. Such reactions are called:
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Displacement Reaction.

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How many grams is 2 drops of food coloring?
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Draw the structural formula of the major product of the reaction of (S)-2,2,3-trimethyloxirane with MeOH, H . Use the wedge/hash
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Explanation:

In this case, we have an <u>epoxide opening in acid medium</u>. The first step then is the <u>protonation of the oxygen</u>. Then the epoxide is broken to generate the most <u>stable carbocation</u>. The nucleophile (CH_3OH) will attack the carbocation generating a new bond. Finally, the oxygen is <u>deprotonated</u> to obtain an ether functional group and we will obtain the molecule <u>(S)-3-methoxy-3-methylbutan-2-ol</u>.

See figure 1

I hope it helps!

8 0
3 years ago
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