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Elena L [17]
3 years ago
8

When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, pr

ovided that
Chemistry
1 answer:
Alla [95]3 years ago
4 0
When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, provided that

<span>it is a reactant in one intermediate reaction and a product in the other reaction</span>

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It allows you to determine the relation between the reactants and the products.

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A cell is placed in a salt solution that has the same concentration as the inside of the cell. What will happen to the cell?
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Most of the volume of a gas is
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3 years ago
What is the volume of 40.0 grams of argon gas at STP ?
MrRa [10]

Answer:

24.9 L Ar

General Formulas and Concepts:

<u>Atomic Structure</u>

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

<u>Aqueous Solutions</u>

  • States of Matter

<u>Stoichiometry</u>

  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

[Given] 40.0 g Ar

[Solve] L Ar

<u>Step 2: Identify Conversions</u>

[PT] Molar Mass of Ar - 39.95 g/mol

[STP] 22.4 L = 1 mol

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                       \displaystyle 40.0 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar})(\frac{22.4 \ L \ Ar}{1 \ mol \ Ar})
  2. [DA] Divide/Multiply [Cancel out units]:                                                         \displaystyle 24.9235 \ L \ Ar

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

24.9235 L Ar ≈ 24.9 L Ar

5 0
2 years ago
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