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Vaselesa [24]
3 years ago
15

Which reactants would lead to a spontaneous reaction?

Chemistry
1 answer:
Igoryamba3 years ago
3 0

Answer:

B. Ba2+ and Mn (nevermind its not B)

Explanation:

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2 grams of a substance was dissolved in 75.0 g of water resulting in a temperature decrease from 23.1 ⁰C to 18.7 ⁰C. The specifi
RUDIKE [14]
<h3>Answer:</h3>

1379.4 Joules

<h3>Explanation:</h3>
  • The quantity of heat is calculated multiplying the mass of a substance by heat capacity and the change in temperature.

Therefore;

Quantity of heat = Mass × specific heat capacity × Change in temperature

Q = mcΔT

In this case;

The substance dissolved in water gained heat while water lost heat energy.

Thus, Heat gained by the substance = heat lost by water

Heat associated with the water  

Mass of water = 75 g

Change in temperature = 4.4°C

Specific heat capacity =  4.18 J/g·⁰C

Heat = mcΔT

        = 75 g × 4.18 J/g·⁰C × 4.4 °C

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3 years ago
Which change of phase is most likely occurring in the beaker
solniwko [45]

Answer:

Evaporation

Explanation:

Heat makes molecules move and eventually evaporate.

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Anyone good at chemistry ? Maybe you can help me out?
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Which two events are apart of the rock cycle
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The key processes of the rock cycle are crystallization, erosion and sedimentation, and metamorphism.

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