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maksim [4K]
2 years ago
6

A neutral atom has a ground state electron configuration of 1s22s22p63s2.The neutral atom becomes an ion during a chemical react

ion.Which is the most likely charge of the ion
Chemistry
1 answer:
alexdok [17]2 years ago
8 0

Answer:

+2

Explanation:

the atom will acquire the noble gas configuration if it loses 2 electrons, becoming a divalent cation

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A cube made of platinum (Pt) has an edge length of 1.0 cm. (a) Calculate the number of Pt atoms in the cube. (b) Atoms are spher
irina1246 [14]

Answer:

a)The total number of platinum atoms are 6.620\times 10^{22} atoms.

b)The radius of a Pt atom is 138.7 pm.

Explanation:

a) Let the total number of platinum atoms be x

And mass of x atoms of platinum be m

Edge length of platinum cube ,s= 1.0 cm

Volume of the cube = 1.0 cm^3

Density of the platinum cube = d=21.45 g/cm^3

Mass = Density × Volume

(m)=21.45 g/cm^3\times 1.0 cm^3=21.45 g

Mass of an atom of platinum = 3.240\times 10^{-22} g

x\times 3.240\times 10^{-22} g=21.45 g

x=6.620\times 10^{22} atoms

b) If only 74 percent of the space inside the cube is taken up by Pt atoms.

Volume occupied by platinum atoms = 74% of 1.0 cm^3

V'= 0.74 cm^3

Volume occupied by 6.620\times 10^{22} atoms is0.74 cm^3.

6.620\times 10^{22} \times \frac{4}{3}\pi r^3=V'

6.620\times 10^{22} \times \frac{4}{3}\times 3.14\times r^3=0.74 cm^3

r = 1.387\times 10^{-8} m = 138.7 pm

The radius of a Pt atom is 138.7 pm.

3 0
3 years ago
Explain the difference between a sea-level transgression and regression.
Alexeev081 [22]
Marine regression means that, submerged sea floor are exposed. It exposes the sea bottom while the transgression may result into flooding. A sea level transgression or marine transgression means when the water level or sea level arises in land, it also means that the sea level will move towards higher land. 
7 0
3 years ago
Read 2 more answers
Which of the following is a product formed when Ag2O decomposes?
ASHA 777 [7]

The product formed when Ag2O decompose is O2 ( answer c)

explanation

Decomposition involve separation of a single chemical compound into two ore more elemental parts Ag2O decomposes to yield Ag and O2

that is 2Ag2O→ 4Ag + O2

2 moles of Ag2O decomposes to yield 4 moles of Ag and 1 mole of O2

6 0
3 years ago
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7. A gas has a volume of 300 mL at 300 mm Hg. What will its volume be if the pressure is changed to 500 mm Hg?​
USPshnik [31]

Answer:

The volume is

<h2>180 mL</h2>

Explanation:

In order to solve for the volume we use the formula for Boyle's law which is

<h3>P _{1}  V _{1} = P _{2}V _{2}</h3>

where

P1 is the initial pressure

V1 is the initial volume

P2 is the final pressure

V2 is the final volume

Since we are finding the final volume we are finding V2

Making V2 the subject we have

<h3>V _{2}  = \frac{P _{1}  V _{1}}{P _{2}  }</h3>

From the question

P1 = 300 mmHg

V1 = 300 mL

P2 = 500 mmHg

Substitute the values into the above formula and solve for the final volume obtained

That's

<h3>V _{2} =  \frac{300 \times 300}{500}  \\  =  \frac{90000}{500}  \\  =  \frac{900}{5}</h3>

We have the final answer as

<h3>180 mL</h3>

Hope this helps you

7 0
3 years ago
1. _______ are atoms that carry an electric charge.
horrorfan [7]
Atoms that carry an electric charge because they gained or lost electrons are called ions.
6 0
3 years ago
Read 2 more answers
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