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LUCKY_DIMON [66]
3 years ago
12

What is a homogeneous ?

Chemistry
2 answers:
Tanya [424]3 years ago
8 0

a homogeneous mixture is a mixture that appears to be one thing. for example air would be one.

USPshnik [31]3 years ago
3 0

Consisting of parts all of the same kind material.

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Zn-64 = 48.63%
Ann [662]

Answer:

A = 65.46 u

Explanation:

Given that,

The composition of zinc is as follows :

Zn-64 = 48.63%

Zn-66 = 27.90%

Zn-67 = 4.10%

Zn-68 = 18.75%

Zn-70 = .62%

We need to find the  average atomic mass of the given element. It can be solved as follows :

A=\dfrac{48.63\times 64+27.90\times 66+4.1\times 67+18.75\times 68+0.62\times 70}{100}\\A=65.46\ u

So, the average atomic mass of zinc is 65.46 u.

5 0
3 years ago
Name three physical properties that differentiate oxides from hydroxide group of minerals.
erik [133]

Answer:

2k20

Explanation:

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3 years ago
Help me pls I will mark you as brain
Liono4ka [1.6K]

Answer:

D. 1, 2, and 3

Explanation:

6 0
3 years ago
A horizontal row of elements in the periodic table represents a<br> group<br> period
castortr0y [4]

Answer:

Period

Explanation:

Periodic trend along period:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction.

The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.The electron affinity also increases along period because of greater positive charge.

7 0
3 years ago
Examples of exponential decay in the real-world.
RUDIKE [14]
The decay of dead things and soil
4 0
3 years ago
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