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elena-14-01-66 [18.8K]
3 years ago
12

Which is the highest sublimation point for phosphorus tribromide and water or carbon dioxide?

Chemistry
1 answer:
Sloan [31]3 years ago
6 0
<span>sublimation point for phosphorous tribromide is 347°F (175°C). sublimation point for water is 211.9 °F (99.97 °C). sublimation point for carbon dioxide is â’109.3 °F(â’78.5 °C). so, phosphorus tribromide has the highest sublimation point (347°F) among these three.</span>
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The titration of Na2CO3 with HCl has the following qualitative profile: a. Identify the major species in solution at points A-F.
exis [7]

Answer:

Answer is explained in the explanation section below.

Explanation:

Solution:

Note: This question is incomplete and lacks very important data to solve this question. But I have found the similar question which shows the profiles about which question discusses. Using the data from that question, I have solved the question.

a) We need to find the major species from A to F.

Major Species at A:

1. Na_{2} CO_{3}

Major Species at B:

1. Na_{2} CO_{3}

2. NaHCO_{3}

Major Species at C:

1. NaHCO_{3}

Major Species at D:

1. NaHCO_{3}

2. H_{2}CO_{3}

Major Species at E:

1. H_{2}CO_{3}

Major Species at F:

1. H_{2}CO_{3}

b) pH calculation:

At Halfway point B:

pH = pKa_{1} + log[CO_{3}.^{-2}]/[HCO_{3}.^{-1}]

pH = pKa_{1} = 6.35

Similarly, at halfway point D.  

At point D,

pH = pKa_{2} + log [HCO_{3}.^{-1}]/[H2CO_{3}]

pH = pKa_{2} = 10.33

8 0
3 years ago
2. Draw a structural formula for 3,4-hexene (C6H12), which has a double bond between the number 3 and 4 carbons in the chain. Wh
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The structure will be:
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8 0
3 years ago
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If you could help me that would be awesome
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There are 3 significant figures. Significant numbers are the numbers that build up your total number. 1-9 always count, 0 only counts if it’s after another number. For example: 0,901 has 3 significant numbers as does 0,910. 9,10 also has 3. 0,09 has just 1.
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navik [9.2K]

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8 0
3 years ago
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Correct?
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Correct answer is C

Na2O + H2O ----> 2 NaOH

:-) ;-)
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