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Alisiya [41]
3 years ago
5

Do you think these fish are an example of natural selection among two populations of the same species

Chemistry
1 answer:
pshichka [43]3 years ago
3 0
I don’t see any fish or anything
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An example of an binary compound is
Ostrovityanka [42]
Sodium Chloride (NaCl) is a binary compound because there are only two elements in the compound.
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4 years ago
Elements that form ionic bonds generally have how many valence electrons? ± 1 or ± 2 ± 2 or ± 3 ± 4 ± 5
11111nata11111 [884]

Answer:

± 1 or ± 2

Explanation:

Electrovalent bonds are chemical bonds that are established on the premise of transferring electrons between two atoms.

In this bond type, a higly electronegative atom, typically a non-metal receives electrons from an atom with lesser electronegativity, a metal.

To know the number of electrons involved in forming electrovalent bonds, we typically look at the groups of atoms that combines to form the bond.

Metals are found in group I and II on the periodic table. Metals are electropositive and are good electron donors. These metals have 1 and 2 electrons in their valence shell respectively. In like manners, the more electronegative atoms are found in group VI and VII. The elements in these groups are non-metals with high electronegativity and requires just 1 and 2 electrons to complete their octet.

5 0
3 years ago
An aquifer is an underground formation containing groundwater. 
Karolina [17]

Answer:

B.)

Explanation:

An Aquifer is an underground formation containing groundwater

3 0
4 years ago
Read 2 more answers
_Al(NO3)3 +_(NH4)3 P04_AlPO4+_ NH, NO3<br>balancing equations​
astra-53 [7]

Answer:

Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + 3NH₄NO₃

The coefficients are: 1, 1, 1, 3

Explanation:

__Al(NO₃)₃ + __(NH₄)₃PO₄ —> __AlPO₄ + __NH₄NO₃

The above equation can be balance as illustrated below:

Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + NH₄NO₃

There are 12 atoms of H on the left side and 4 atoms on the right side. It can be balance by writing 3 before NH₄NO₃ as shown below:

Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + 3NH₄NO₃

Now the equation is balanced.

The coefficients are: 1, 1, 1, 3

4 0
3 years ago
How many joules are needed to heat 20.0 g of Au from 10 C to 50 C
Blababa [14]
297 j I just took the test
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3 years ago
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