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natta225 [31]
3 years ago
14

Pre-lab questions 1. a concentration gradient affects the direction that solutes diffuse. describe how molecules move with respe

ct to the concentration.
Chemistry
1 answer:
VLD [36.1K]3 years ago
7 0

Just like how heat moves from a region of higher temperature to a region of lower temperature, molecules also tend to move from a region of higher concentration to a region of lower concentration. This is called natural diffusion and is naturally happening to reach stability.

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If two clear liquids are mixed and a precipitate formed, what has probably happened?
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At standard temperature and pressure. 0.500 mole of xenon gas occupies
ANEK [815]

Answer:

0.500 mole of Xe (g) occupies 11.2 L at STP.

General Formulas and Concepts:

<u>Gas Laws</u>

  • STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

<u>Stoichiometry</u>

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  • Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

<em>Identify.</em>

0.500 mole Xe (g)

<u>Step 2: Convert</u>

  1. [DA] Set up:                                                                                                  \displaystyle 0.500 \ \text{mole Xe} \bigg( \frac{22.4 \ \text{L Xe}}{1 \ \text{mole Xe}} \bigg)
  2. [DA] Evaluate:                                                                                               \displaystyle 0.500 \ \text{mole Xe} \bigg( \frac{22.4 \ \text{L Xe}}{1 \ \text{mole Xe}} \bigg) = 11.2 \ \text{L Xe}

Topic: AP Chemistry

Unit: Stoichiometry

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2 years ago
All redox reactions are combustion reactions.<br><br> True or False?
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the answer is false

Explanation:

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the volume of liquid can be measured with? A. graduated cylinder B. pan balance C. scale D. metric ruler
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a: is the correct anwser

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—COOH, acid group, containing 3 elements, C, carbon, O, oxygen, and H, hydrogen.

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