1.25 pts

Chemistry

1 answer:

Snezhnost [94]3 years ago

8 0

Answer:

Lead, Pb.

Explanation:

Hello!

In this case, since the molar mass of the compound is 293.8 g/mol, and the molecular formula is NaXO₄, we infer that the molar mass is computed via:

$293.8=m_{Na}+m_X+4*m_O$

Thus, we can solve for the atomic mass of X as shown below:

$293.8=23.0+m_X+4*16.0\\\\m_X=293.8-23.0-4*16.0\\\\m_X=206.8g/mol$

Thus, the element whose atomic mass is about 206.8 g/mol is lead (207.2 g/mol) even when it is not properly a transition metal.

Best regards!

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