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vovikov84 [41]
3 years ago
6

Which element is in Group 2 and Period 7 of the Periodic Table?

Chemistry
1 answer:
miss Akunina [59]3 years ago
3 0

Answer:

A) Radium

i don't think that group 2 has period 7, it has only up to period 6 so it's probably Radium :))

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Karla added green pellets to a container of water before she began watering her lawn. What correctly describes
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The correct answer is C. The water is the solvent because the green pellets dissolved in it.

Explanation:

In solutions, the are two substances involved, the solvent and the solute. The solvent is usually a liquid substance; additionally, the solvent dissolves another substance, which is known as the solute. For example, if you dissolve a spoon of salt in a glass of water, the solute is the salt which is the substance dissolved and the solvent is the water because the solute is dissolved in it. According to this, in the case presented the water is the solvent because the green pellets which are the solute dissolve in it.

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3 years ago
Use LeChâtelier's principle explain why the concentration of NO at equilibrium increases when the reacuon takes place at higher
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increasing the temperature shifts the equilibrium in the direction of the reaction in which heat is absorbed.

Explanation:

The concentration of NO at equilibrium will increase when the reaction takes place at a higher temperature because increasing the temperature shifts the equilibrium in the direction of the reaction in which heat is absorbed.

The reaction is an endothermic reaction.

                            N₂  + O₂  + heat  ⇄  2NO

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learn more:

Thermodynamics of reactions brainly.com/question/10567109

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6 0
3 years ago
It is safe to stand on the top step of a ladder provided it is braced properly. A) True B) False
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2 years ago
What do cations and anions form?
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6 0
3 years ago
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