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Gala2k [10]
3 years ago
8

Why is cold air cold?

Chemistry
1 answer:
Sholpan [36]3 years ago
4 0

Explanation:

Energy makes molecules in the air move faster and expand, decreasing density. The opposite is true for cold air. Molecules are closer together, and absorb less energy.

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Which electron configuration is impossible?
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Answer:

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Sedimentary rocks are a formed below earths surface as magma b a type of foliated igneous rock c formed by great heat d formed f
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Consider the reaction.
Alex_Xolod [135]

Note the signs of equilibrium:-

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How many formula units are there in 212 grams of mgCl2
AleksandrR [38]

Formula units are there in 212 grams of MgCl₂ are 830.56

Formula is the empirical of any ionic or covalent network solid compound used as an independent entity for stoichiometric calculations and it is the lowest whole number ratio of ions represented in an ionic compound

Here given data is

MgCl₂ = 212 grams

1 mole of magnesium chloride has mass = 95.211 gram and contains 6.022×10²³formula units of magnesium chloride

Here 212 grams×6.022×10²³form unit of MgCl₂/95.211 gram = 830.56

Know more about magnesium chloride

brainly.com/question/22727305

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