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3 years ago

When a strontium atom loses its valence electrons, it’s has the same electrons configuration as which element

Chemistry

1 answer:

Ilia_Sergeevich [38]3 years ago

3 0

Krypton. Krypton has the same number of electron configuration as Krypton. Hope it helped :D

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250 kilograms is how many pounds?

Kruka [31]

Answer:

250 Kg = 551.155655 lb

Explanation:

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2 years ago

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How are the conditions at which phases are in equilibrium represented on a phase diagram?

insens350 [35]

How are the conditions at which phases are in equilibrium represented on a phase diagram?

Image result for How are the conditions at which phases are in equilibrium represented on a phase diagram?

Along the line between liquid and solid, the melting temperatures for different pressures can be found. The junction of the three curves, called the triple point, represents the unique conditions under which all three phases exist in equilibrium together. Phase diagrams are specific for each substance and mixture.

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3 years ago

Gold has a density of 1,200 lb./ft. What is the density of gold in g/em? For conversion factors use I lb. 453.6 g, and l inch-2.

Jlenok [28]

<u>Answer:</u> The density of gold in $g/cm^3$ is $19.22g/cm^3$

<u>Explanation:</u>

Density is defined as the ratio of mass of the object and volume of the object. Mathematically,

$\text{Density}=\frac{\text{Mass of the object}}{\text{Volume of the object}}$

We are given:

Density of gold = $1200lb/ft^3$

Using conversion factors:

1 lb = 453.6 g

1 feet = 12 inches

1 inch = 2.54 cm

Converting given quantity into $g/cm^3$ , we get:

$\Rightarrow (\frac{1200lb}{ft^3})\times (\frac{453.6g}{1lb})\times (\frac{1ft}{12inch})^3\times (\frac{1inch}{2.54cm})^3\\\\\Rightarrow 19.22g/cm^3$

Hence, the density of gold in $g/cm^3$ is $19.22g/cm^3$

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3 years ago

What's the lowest to greatest order for scales of universe?

elena55 [62]

Answer:

universe

Explanation:

tell me if im wrong

4 0

3 years ago

An atom of nitrogen has seven electrons. Which diagram correctly represents the arrangement of these electrons?

gizmo_the_mogwai [7]

Answer:

Option C.

Explanation:

The arrangement of electrons in their orbital follows certain rules.

The Hund's rule practically explained how electrons are distributed in their orbitals.

The Hund's rule states that electrons distributed among the orbitals of the same shell singly (without partner) before pairing occurs.

In the filling of these electrons in their orbitals, we fill in the electron without pairing first because electrons tends to repel each other before filling with the opposite spin as shown in the attached photo.

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3 years ago