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aleksklad [387]
2 years ago
10

Will has been told to check the oxygen level in a confined space, before workers are allowed to enter. Will should verify that t

he space has at least ____ % oxygen by volume.
Chemistry
1 answer:
loris [4]2 years ago
8 0
19.5%.

If you need a full explanation, let me know :]
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PLEASE HELP! MAJOR TEST GRADE! :(
Goshia [24]

Answer:

c

Explanation:

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3 years ago
Use the following equation to answer question 1-4. Make sure you balance first.
worty [1.4K]
<h3>Answer:</h3>

5.2 mol H₂O

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Chemistry</u>

<u>Stoichiometry</u>

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<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 6HCl + Fe₂O₃ → 2FeCl₃ + 3H₂O

[Given] 10.4 mol HCl

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

[RxN] 6 mol HCl = 3 mol H₂O

<u>Step 3: Stoichiometry</u>

  1. Set up:                             \displaystyle 10.4 \ mol \ HCl(\frac{3 \ mol \ H_2O}{6 \ mol \ HCl})
  2. Multiply/Divide:               \displaystyle 5.2 \ mol \ H_2O
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3 years ago
When 200g water goes from a temperature 10C to 40C, is heat absorbed or released?
gayaneshka [121]

how would it be possible to even be absorbed?? the answer is released.

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3 years ago
How does the periodic table used today classify elements?
S_A_V [24]

Answer:

The Periodic Table organizes chemical elements according to the number of protons that each has in its atomic nucleus

3 0
3 years ago
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Repeated trials and replication are the same thing. <br><br> - True<br> - False
Sauron [17]

Answer:

false

Explanation:

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3 years ago
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