The atomic number of sodium (Na) is 11. Which of the following is the correct electron configuration for this neutral atom?

Chemistry

1 answer:

Studentka2010 [4]3 years ago

3 0

The 2nd option. Correct me if I’m wrong

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For the reaction 2C₆H₅COOH + 15O₂ → 14CO₂ + 6H₂O, which of the following options gives the correct product: product ratio? A.CO₂

Andre45 [30]

Answer:

A. CO2:H2O = 14:6

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3 years ago

How many moles are equal to 1.4 x 10^24 atoms of aluminum

Svetlanka [38]

Answer: 2.3 moles

Explanation:

Recall that based on Avogadro's law, 1 mole of any substance has 6.02 x 10^23 atoms

So if 1 mole of Aluminum = 6.02 x 10^23 atoms

Then, Z moles = 1.4 x 10^24 atoms

To get the value of Z, we cross multiply:

1 mole x 1.4 x 10^24 atoms = Z x (6.02 x 10^23 atoms)

1.4 x 10^24 atoms = Z x (6.02 x 10^23)

Hence, Z = (1.4 x 10^24 atoms) ➗ (6.02 x 10^23 atoms)

Z =2.3 moles

Thus, there are 2.3 moles in 1.4 x 10^24 atoms of aluminum.

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3 years ago

The mass of a material is a/an ___________.

tia_tia [17]

C) Extensive Property

An extensive property is a property that depends on the amount of matter in a sample. The mass of an object is a measure of the amount of matter that an object contains.

7 0

3 years ago

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The vapor pressure of liquid iodomethane, CH3I, is 40.0 mm Hg at 249 K.A sample of CH3I is placed in a closed, evacuated contain

lora16 [44]

Explanation:

It is given that vapor pressure of liquid iodomethane is 40.0 mm Hg. So, if we calculate the vapor pressure according to the given values and if its value will be greater than the the given vapor pressure of iodomethane then it means that some of the vapors has converted into liquid state.

As the given values are as follows.

$P_{1}$ = 72.0 mm Hg, $T_{1}$ = 404 K