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Tanya [424]
3 years ago
7

What is the molarity of a solution made by dissolving 20.0 g of H3PO4 in 50.0 mL of solution

Chemistry
1 answer:
Rom4ik [11]3 years ago
8 0
(20*1000)÷(molecular weight of H3po4*50)

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What is the change in enthalpy when 11. 0 g of liquid mercury is heated by 15°c?
Vlad1618 [11]

Enthalpy change is the difference between energy used and energy gained. The change in enthalpy of the liquid mercury is 0.0231 kJ.

<h3>What is the enthalpy change?</h3>

Enthalpy change is the difference between the energy used to break chemical bonds and the energy gained by the products formed in a chemical reaction.

The enthalpy change is given by,

\rm \Delta H_{rxn} = \rm q_{rxn}

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The specific heat of mercury (c) = 0.14 J per g per degree Celsius

Temperature change = 15 degrees Celsius

Enthalpy change is calculated as:

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Therefore, 0.0231 kJ is the change in enthalpy.

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brainly.com/question/10932978

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6 0
2 years ago
1. What is the electron configuration of bromine atom?
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[Ar] 3d¹⁰ 4s² 4p⁵

Explanation:

........

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3 years ago
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3 years ago
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