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anzhelika [568]
3 years ago
5

Calculate the mass of O​ 2​(in g) that is needed to produce 0.75 mol MgO. Round your answer to 2 decimal places. show work

Chemistry
1 answer:
OverLord2011 [107]3 years ago
5 0
Ndbsbehdidxhbddbhdhxxh
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Balance this equation and pick the answer with the coefficients that belong there.
geniusboy [140]

Answer:

2,3,6,1

2,3,6,1

Explanation:

The unbalanced reaction expression is given as:

  AlBr₃    +    K₂SO₄  →    KBr  + Al₂(SO₄)₃

We need to balanced this reaction equation. Our approach is a mathematical method where we assign variable a,b,c and d as the coefficients.

 aAlBr₃    +    bK₂SO₄  →    cKBr  + dAl₂(SO₄)₃

Conserving Al;  a  = 2d

                   Br:  3a  = c

                   K:   2b = c

                   S:   b  = 3d

                   O:  4b  = 12d

Let a  = 1, c = 3, d  = \frac{1}{2}  b  = \frac{3}{2}  

 Multiply through by 2 to give;

     a  = 2, b = 3, c = 6 and d  = 1

 2AlBr₃    +    3K₂SO₄  →    6KBr  + Al₂(SO₄)₃

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3 years ago
2. Graph the following information in a LINE graph. Label and number the x and y-axis approHDILI.
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I wish I could speak Spanish

Explanation:

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B AND D

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For a comparative or experimental investigation, scientists often make a testable ___ about a scientific question, and then they
Morgarella [4.7K]

Answer:

B. Hypothesis

Explanation: A hypothesis is a guess of what will or might happen before an experiment.

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