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Alborosie
3 years ago
8

Which scientific discipline belongs in the blue box?

Chemistry
2 answers:
Brums [2.3K]3 years ago
7 0

Answer:

chemistry I think.

Explanation:

I don't need a thanks.

Stella [2.4K]3 years ago
7 0

Answer:

chemistry

Explanation:

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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>

  • Using Dimensional Analysis
<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
4 0
3 years ago
How to round significant figures
marissa [1.9K]

Explanation:

To round to a significant figure:

  1. look at the first non-zero digit if rounding to one significant figure
  2. look at the digit after the first non-zero digit if rounding to two significant figures
  3. draw a vertical line after the place value digit that is required
  4. look at the next digit
  5. if it's 5 or more, increase the previous digit by one
  6. if it's 4 or less, keep the previous digit the same
  7. fill any spaces to the right of the line with zeros, stopping at the decimal point if there is one

<h3><em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em></h3>
7 0
3 years ago
Read 2 more answers
A sample of gas has an initial volume of 15 L and an initial pressure of 4.5 atm. If the pressure changes to 1.8 atm, what is th
olga_2 [115]

Answer:

37.5 L

Explanation:

Initial Volume, V1 = 15L

Initial Pressure P1 = 4.5 atm

Final Pressure, P2 = 1.8 atm

Final Volume V2 = ?

The relationship between these variables is given as;

P1V1 = P2V2

V2 = PIV1 / P1

Inserting the values;

V2 = 4.5 * 15 / 1.8

V2 = 37.5 L

4 0
3 years ago
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Conductors such as metal are materials that have a
likoan [24]

Answer:

Conductors allow a flow of current or a charge of flow

I hope this helped! Please rate it the brainlist if possible, thanks

5 0
3 years ago
A reaction will be spontaneous if the change in Gibbs free energy ____
aleksklad [387]

Answer:

C. is less than 0

Explanation:

The Gibbs free energy (G) of a system is defined as the energy that is used for the work done. The change in Gibbs free energy during a reaction shows the spontaneity and energetics of the reactions.

A reaction will be spontaneous if the change in Gibbs free energy will be negative or less than 0. Reactions with positive Gibbs free energy are non-spontaneous.

Hence, the correct answer is "C. is less than 0".

5 0
2 years ago
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