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aev [14]
3 years ago
14

Except for helium, all the elements in the last column of the periodic table have

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
4 0

Answer:

O

Explanation:

they have O valence electrons

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3 years ago
Please help <br><br> 19.0 kg/0.021 m^3
irina1246 [14]

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904.8 kg / m3

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6 0
2 years ago
Would the amount of solid magnesium increase decrease or stay the same if you added a strong acid to it?
Vlada [557]
Solid Magnesium is considered as active metal so it reacts with strong acids like HCl and H₂SO₄ liberating Hydrogen gas according to the following equations:

Mg(s) + 2 HCl(aq) → MgCl₂(aq) + H₂(g)
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3 years ago
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5 0
2 years ago
Which solution is the best conductor of electric
nadezda [96]

(C) 0.1 mole of NaCl dissolved in 1,000. mL of water

<u>Explanation:</u>

The conductivity of 0.1 mole of NaCl dissolved in 1000 mL of water will be greatest as the number of ions in 0.1 mole of NaCl will be more than 0.001, 0.05 and 0.005 moles of NaCl. Greater the number of ions in the solution, greater will be the conductivity. Specific Conductivity decreases with a decrease in concentration. Since the number of ions per unit volume that carry current in a solution decrease on dilution. Hence, concentration and conductivity are directly proportional to each other.

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3 years ago
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