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Mekhanik [1.2K]
3 years ago
5

I need help with writing the formula compounds by cross crossing them

Chemistry
1 answer:
ElenaW [278]3 years ago
5 0
Use your head or a formula website.
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Which element has the same number of energy levels as aluminum (Al) and the same number of valence electrons as calcium (Ca)
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magnesium (Mg)

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What is the reason for the low solubility of LiF (0.27 g
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The answer is C. The high solvation energy for LI+

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LiF has lower solubility because of the high solvation energy of Li+ ion. This is due to the smaller  size and very big charge compared to Cs+ ion which has a bigger size and solvent molecules easily surround it.

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What is the difrence beetween thermal energy and temperature
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Hope this helps

Explanation:

Thermal energy, which is more commonly known as heat, is a form of energy. It is measured in joules. Thermal energy is an internal energy for a given system. Thermal energy is the cause for the temperature of a system.

Temperature is the measureable thermal property of a system. It is measured in Kelvin, Celsius, or Fahrenheit. The SI unit for temperature measurement is Kelvin.

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Thermal energy is not a directly measurable quantity whereas temperature is a measurable quantity.

• The temperature of an object can take negative values depending on the unit system used to measure the temperature, but the thermal energy of a system cannot be negative.

• Temperature is measured in Kelvin whereas thermal energy is measured in Joule.

• An object can lose or gain thermal energy in a state transition without changing the temperature of the system.

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