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melamori03 [73]

3 years ago

9

All please guys help me please

1 answer:

MA_775_DIABLO [31]3 years ago

7 0

Explanation:

<em>Percentage </em><em>composition </em><em>by </em><em>mass</em>

<em>2</em><em>1</em><em>.</em><em>2</em><em> </em><em>%</em>
<em>4</em><em>6</em><em>.</em><em>6</em><em>%</em>
<em>3</em><em>5</em><em>%</em>
<em>2</em><em>1</em><em>.</em><em>2</em><em> </em><em>%</em>

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