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yuradex [85]
3 years ago
14

How to make a sugar cube dissolve more quickly in water?

Chemistry
1 answer:
Vesna [10]3 years ago
3 0
Heat the water up a little
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Astatine belongs to which element group: nonmetal, halogen, noble gas?
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Answer:

halogen

Explanation:

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When heating a solution to boiling on a hot plate, start by ___________. Then, turn the heat to ___________to start. If necessar
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Answer:

1. starting and stabilizing the stir function

2. a medium heat

3.turn up the heat setting

Explanation:

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II. Ensure you avoid heating the flask while it is closed.

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What is called what a scientist personal opinion affects the way experimental results are reported?
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Read 2 more answers
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

        =1379.4 Joules

5 0
3 years ago
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