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kkurt [141]
3 years ago
15

Which element(s) are not balanced in this equation?

Chemistry
2 answers:
zhenek [66]3 years ago
8 0
The correct response would be A. Only the Fe is unbalanced, all of the other elements are balanced.
IRINA_888 [86]3 years ago
6 0
Check every element at both sides

Element      left side      right side   conclusion

Fe                2                1                not balanced
O                3+3=6          3*2=6        balanced
C                3                  3                balanced

Answer: only Fe is unbalanced (2 atoms at the left side and 1 atom at the right side)

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You are starting with 2 pounds of 30% acetic acid solution. You want to dilute
Tpy6a [65]

Answer:

The mass of water to be added is 2 pounds

Explanation:

The given parameters are;

The mass of the given solution = 2 pounds

The concentration of the given solution = 30%

The desired concentration of the solution = 15%

The mass, m of the acetic acid in the given solution = 30% × 2 pounds

m = 30/100 × 2 pounds = 0.6 pounds

To make a 15% acetic acid solution of acetic acid, the mass X of the required volume, is given as follows;

15% of X = 0.6 pounds

15/100 × X = 3/20 × 0.6 pounds

∴ The mass of the solution required  X = 0.6 × 20/3 = 4 pounds

The mass of the solution that will contain 0.6 pounds of acetic acid giving a 15% acetic acid solution is 4 pounds

Therefore, the mass of water to be added to the original solution to make the a 15% acetic acid solution is 2 pounds.

8 0
3 years ago
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lord [1]

Answer:

D.5,55cm+/-0,005cm

Explanation:

so this is the answer

5 0
3 years ago
How many Na and Cl molucules are in this atom? Please help
kati45 [8]
5 Na molecules and 5 Cl molecules
5 0
2 years ago
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In the following neutralization reaction, which substance is the acid?
denis-greek [22]

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How would you prepare 100 ml of 0.4 M MgSO4 from a stock solution of 2 M MgSO4?
miss Akunina [59]
OK, so to answer this question, you will simply use the molality equation which is as follows:
<span>M1V1 = M2V2 
In the givens you have:
M1 = 2M
V1 is the unknown
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</span>plug in the givens in the above equation:
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Based on this: you should take 20 ml of the 2 M solution and make volume exactly 100 ml in a volumetric flask by diluting in water.

7 0
2 years ago
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