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Maksim231197 [3]
3 years ago
6

The electron configuration 1sÆ 2sÆ2pÒ 3sÆ3pÒ represents which noble gas?

Chemistry
1 answer:
ch4aika [34]3 years ago
4 0
This noble gas is argon (Ar), because its third energy level is full.
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Answer:

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Explanation:

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A student obtains the following data: Mass of empty, dry graduated cylinder: 21.577 g Volume added of NaCl solution: 4.602 mL Ma
klasskru [66]

<u>Answer:</u> The density of NaCl solution is 3.930 g/mL

<u>Explanation:</u>

We are given:

Mass of cylinder, m_1 = 21.577 g

Mass of NaCl and cylinder combined, M = 39.664 g

Mass of NaCl, m_2 = (M-m_1)=(39.664-21.577)g=18.087g

To calculate density of a substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

We are given:

Mass of NaCl = 18.087 g

Volume of NaCl solution = 4.602 mL

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\text{Density of NaCl}=\frac{18.087g}{4.602mL}\\\\\text{Density of NaCl}=3.930g/mL

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Help please
Lady_Fox [76]

Answer:

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irga5000 [103]
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