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Nat2105 [25]
2 years ago
12

I need help with science

Chemistry
2 answers:
Salsk061 [2.6K]2 years ago
5 0
Need more information
GalinKa [24]2 years ago
3 0

Answer:

1. The difference between passive and active transport is passive transport is when a place is not busy, and people are just passing around. Active transport however, is people are rushing, shoving, each other around, and where a place is really busy and wild.

2. Active transport: energy needed: yes; structures involved: airports, buildings; examples; people on a train or squashed space.

Passive transport: energy needed: no; structures involved: suburbs, sidewalks; examples: people walking on a sidewalk on open space.

Explanation:

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the shape

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In an acid-base titration experiment, 50 mL of a 0.05 M solution of acetic acid (Ka= 1.75 x 10-5 ) was titrated with a 0.05M sol
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Answer:

(3) 5.36

Explanation:

Since this is a titration of a weak acid before reaching equivalence point, we will have effectively a buffer solution. Then we can use the Henderson-Hasselbalch equation to answer this question.

The reaction is:

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V NaOH = 40 mL x 1 L/1000 mL = 0.040 L

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pH = pKa + log ((Ac⁻)/(HAc))

(Notice we do not have to calculate the molarities of  Ac⁻ and HAc because the volumes cancel in the quotient)

pH = -log (1.75 x 10⁻⁵) + log (0.002/0.0005) = 5.36

THe answer is 5.36

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