2 years ago

True of false When sugar dissolves in water, water particles pull sugar particles off the sugar crystal

Chemistry

1 answer:

Masja [62]2 years ago

6 0

Answer:

Answer is True

Explanation:

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The experimental mass is 51.5 grams and the theoretical mass is 50 grams what is the percent error ? Show your work below round

aliya0001 [1]

Answer:

Explanation:

as error occurred is 1.5(error value) so 1.5 is 3%of 50(original value)

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3 years ago

When air expands what type of energy increases?

LuckyWell [14K]

Heat energy. The heat allows air to expand allowing more space for molecules to move around.

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3 years ago

In a constant‑pressure calorimeter, 70.0 mL of 0.350 M Ba(OH)2 was added to 70.0 mL of 0.700 M HCl. The reaction caused the temp

DanielleElmas [232]

Answer: The amount of heat absorbed by the solution is 2.795 kJ

Explanation:

To calculate the mass of water, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

Density of water = 1 g/mL

Volume of water = [70 + 70] = 140 mL

Putting values in above equation, we get:

$1g/mL=\frac{\text{Mass of water}}{140mL}\\\\\text{Mass of water}=(1g/mL\times 140mL)=140g$

To calculate the heat absorbed, we use the equation:

$q=mc\Delta T$

where,

q = heat absorbed

m = mass of water = 140 g

c = heat capacity of water = 4.186 J/g°C

$\Delta T$ = change in temperature = $T_2-T_1=(28.74-23.97)^oC=4.77^oC$

Putting values in above equation, we get:

$q=140g\times 4.186J/g^oC\times 4.77^oC=2795.4J=2.795kJ$

Hence, the amount of heat absorbed by the solution is 2.795 kJ

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3 years ago

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Delicious77 [7]

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Explanation:

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Why is it difficult to hame lonic Compounds that Contain transition metals ?

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Answer:
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