Each oxygen will have the oxidation number (2-), and we know the total charge is 1-. We have four oxygen atoms per molecule, so we can set up the equation:
(charge on Mn) + 4(charge on O) = -1
(charge on Mn) + 4(-2) = -1
(charge on Mn) - 8 = -1
Charge on Mn = 7
The answer is C. 7
Answer:
The answer to your question is 6.72 x 10²⁰ atoms
Explanation:
Data
Avogadro's number = 6.022 x 10²³ atoms
Volume = 22.4 L
Volume 2 = 25 ml
Number of atoms = ?
Process
1.- Convert mL to L
1000 mL ----------------- 1 L
25 mL ------------------ x
x = (25 x 1) / 1000
x = 25 / 1000
x = 0.025 L
2.- Use proportions and cross multiplication to find the answer.
22.4 L ----------------- 6.023 x 10²³ atoms
0.025 L -------------- x
x = (0.025 x 6.023 x 10²³) / 22.4
x = 1.51 x 10²² / 22.4
x = 6.72 x 10²⁰ atoms
The answer is homogeneous mixture
Answer:
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