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Allisa [31]
3 years ago
15

An alien civilization has different names and symbols for six elements. Place each element in the correct location in the period

ic table.

Chemistry
2 answers:
olga2289 [7]3 years ago
5 0

Answer:

The picture

Explanation:

You just have to count the number of valence electrons and place the unknown elements on the periodic table according to their atomic number.

Margarita [4]3 years ago
3 0

Answer:

why whould I know that!!??

Explanation:

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Nicaragua experienced a drought in 1987 following warmer than average water temperatures in the eastern pacific. What likely cau
Dvinal [7]
(B)
The answer is El NIÑO'
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4 0
3 years ago
A fish company delivers 22 kg of salmon, 5.5 kg of crab and 3.48 kg of oysters to your seafood restaurant. What is the mass, in
Rainbow [258]

Answer:

Mass of sea food = 30.98 Kg

Mass of sea food in pound = 68.31 lbs

Explanation:

Salmon, crab and oysters all are sea food.

Mass of sea food = Mass of salmon + Mass of crab + mass of oyster

Mass of salmon = 22 kg

Mass of crab = 5.5 kg

Mass of oysters = 3.48 kg

Mass of sea food = Mass of salmon + Mass of crab + mass of oyster

                             = 22 + 5.5 + 3.48

                             = 30.98 Kg

1 Kg = 2.205 lbs

Therefore, 30.98 kg = 30.98 × 2.205

                                 = 68.31 lbs

8 0
3 years ago
Just as one dozen eggs always has 12 eggs in it, one mole of a
zzz [600]

Answer:

6.022x10^{23}atoms \ Al

Explanation:

Hello,

In this case, given the described concept regarding the Avogadro's number, we can easily notice that 27.0 g of aluminium foil has 6.022x10²³ atoms as shown below based on the mass-mole-particles relationship:

27.0gAl*\frac{1molAl}{27.0gAl} *\frac{6.022x10^{23}atoms \ Al}{1molAl} \\\\=6.022x10^{23}atoms \ Al

Notice this is backed up by the fact that aluminium molar mass if 27.0 g/mol.

Best regards.

8 0
3 years ago
Identify the spectator ions in this reaction:<br> 2H+ + 2NO3- + Ca2+ + 2OH- → Ca2+ + 2NO3 + 2H20
inysia [295]

Answer:

Explanation:

2NO3, Ca2+

Spectator ions exists in both sides of the equation. These ions are present in both sides thus cancel out (they do not contribute to reaction...i.e. they only watch or spectate ;) )

4 0
3 years ago
Read 2 more answers
State, in terms of electrons, why the radius of Na+ ion in the table salt is smaller than the radius of a Na atom.
Anastaziya [24]

Answer:

• The Na atom is formed when the Na+ ion gains an electron.

• A Na+ ion has 10 electrons and a Na atom has 11 electrons.

• A sodium atom has one more electron shell than a sodium ion.

• A Na+ ion is formed when a Na atom loses an electron

3 0
2 years ago
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