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kogti [31]
2 years ago
8

Who won't free Brainliest

Chemistry
2 answers:
kobusy [5.1K]2 years ago
8 0
MEE!!!!!!!!!!!!!!!!!!!!!!!!!
taurus [48]2 years ago
6 0
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It requires energy to melt ice. Applying salt to the ice created a chemical reaction melting the ice. Were did the energy come f
Ilia_Sergeevich [38]

Answer:

HOPE IT HELPS...

Explanation:

When added to ice, salt first dissolves in the film of liquid water that is always present on the surface, thereby lowering its freezing point below the ices temperature. Ice in contact with salty water therefore melts, creating more liquid water, which dissolves more salt, thereby causing more ice to melt, and so on

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2 years ago
On a distance-time graph, at 2 hours the graph is at a height of 20 meters, and at 3 hours it is at a height of 100 meters. What
Gnoma [55]

Answer:

80 m/hr

Explanation:

Changes from 20 to 100 meters in ONE Hour

    changes  80 meters in one hour    = 80 m/hr

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What type of inter-molecular forces are present in C12H22o11 (AKA sugar)
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Since the molecule contains Hydrogen and is covalently bonded, it contains dipole-dipole forces and hydrogen bonds.
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2 years ago
Use the standard enthalpies of formation for the reactants and products to solve for the ΔHrxn for the following reaction. (The
Rudiy27
<span>
1. Remember (sum of products) - (sum of reactants)
So ΔHrxn = 2 ΔHf [H2(g)] + ΔHf [Ca(OH)2(s)] - 2 ΔHf [H2O(l)] - ΔHf [Ca(s)]
= 2*0 + -986.09 kJ/mol - 2*(-285.8 kJ/mol) - 0

Do the math and you'll have the answer. BTW the ΔHf [H2(g)] and ΔHf [Ca(s)] were 0 because these are elements in their standard states.

</span>HOPE THIS HELPS ;)
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The table shows the properties of some organic compounds.
Shalnov [3]

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option C is correct

..............,

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