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olchik [2.2K]
3 years ago
10

What does each period have in common?​

Chemistry
1 answer:
Allushta [10]3 years ago
4 0

Explanation:

All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons.

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The steps required to prepare 200.0 mL of an aqueous solution of iron (III) chloride, at a concentration of 1.25x10^-2 M. Please
Yanka [14]

Answer:

In order to prepare 200.0 mL of an aqueous solution of iron (III) chloride, at a concentration of 1.25 x 10⁻² M, you need to weight 0.4055 g of FeCl₃ and add to 200.0 mL of water.

Explanation:

Concentration: 1.25 x 10⁻² M

1,25 x 10⁻² mol FeCl₃ ___ 1000 mL

              x                   ___ 200.0 mL

         x = 2.5 x 10⁻³ mol FeCl₃

Mass of FeCl₃:

1 mol FeCl₃ _____________ 162.2 g

2.5 x 10⁻³ mol FeCl₃ _______    y

                  y = 0.4055 g FeCl₃

8 0
4 years ago
Hydrogen chloride gas is shipped in a container under 5,100 mm Hg of pressure that occupies 20.1 liters at 29°C. How many liters
Agata [3.3K]

The gas will occupy 120 L at STP.

We can use the <em>Combined Gas Laws</em> .

In 1982, chemists redefined <em>STP</em> as <em>1 bar</em> and 0 °C (273.15 K).

<em>p</em>_1 = 5100 mmHg × (1 atm/760 mmHg) × (1.013 bar/1 atm) = 6.798 bar

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<em>p</em>_1<em>V</em>_1/<em>T</em>_1 = <em>p</em>_2<em>V</em>_2/<em>T</em>_2

<em>V</em>_2 = <em>V</em>_1 × <em>p</em>_1/<em>p</em>_2 × <em>T</em>_2/<em>T</em>_1

= 20.1 L × (6.798 bar/1 bar) × (273.15 K/302.15 K) = 120 L

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3 years ago
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Answer:

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Explanation:

I just learned this in science.

I hope this helps!

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All tropical cyclones can produce widespread torrential rains, which cause massive flooding and trigger landslides and debris flows.

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