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iVinArrow [24]
3 years ago
14

Which type of reaction always has an element and a compound as reactants?

Chemistry
2 answers:
ladessa [460]3 years ago
8 0

Answer:

B. single-replacement

Explanation:

Nina [5.8K]3 years ago
4 0
B. Single-replacement
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Why does Hess's law allow you to determine the enthalpy change of a<br> reaction?
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Enthalpy is a state function

Explanation:

The Hess's law allows us to determine the enthalpy change of a reaction because enthalpy is a state function. It does not depend on the individual path take in going from reactants to products in the reaction.

  • Enthalpy changes are the heat changes accompanying physical and chemical changes.
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What happens when liquid magma is cooled
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Find the molality of the solution if 42 grams of lithium chloride (LiCl) are dissolved in 3.6 kg of water.
omeli [17]
The molality is calculated using the following rule:
molality = number of moles of solute / kg of solvent

From the periodic table:
molar mass of lithium = 6.941 gm
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