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Sladkaya [172]
2 years ago
10

I need help wit this

Chemistry
2 answers:
Nataly_w [17]2 years ago
4 0

#1

\\ \sf\longmapsto2 Ca+O_2\longrightarrow 2CaO

Balanced

#2

\\ \sf\longmapsto N_2+3H_2\longrightarrow 2NH_3

Balanced

#3

\\ \sf\longmapsto 2Cu_2O+C\longrightarrow 4Cu+CO_2

Balanced

#4

\\ \sf\longmapsto H_2O_2\longrightarrow H_2O+O_2

Already balanced

Olenka [21]2 years ago
3 0

Answer: What are you german

Explanation:

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The average atomic mass recorded on the periodic table for cobalt is 58.933 u. This indicates that the most abundant isotope of
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Using the fact that at 0.10 M, the absorbance was 0.357; and at 0.20 M, the absorbance was 0.714, the absorptivity (slope) is
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Answer:

The answer is "3.57 and 0.07".

Explanation:

Using the slop formula:

=\frac{n_2-n_1}{n_2-n_1}\\\\ =\frac{0.714-0.357}{0.20-0.10} \\\\ = ABSORPTIVITY, \ \ a=3.57 \\\\A= a\times b \times c

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from calibration it is found that

a=3.57\\\\consentation \ c=\frac{A}{a\times b} \\\\C=\frac{0.250}{3.57\times 1}

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