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Sauron [17]
3 years ago
12

NEED ANSWER ASAP! How many grams are in 1.50 moles of bromine liquid?

Chemistry
1 answer:
padilas [110]3 years ago
7 0

Answer:

119.85 grams Br or 120. grams Br (sig figs)

Explanation:

1.50 moles Br          79.90 g Br

--------------------- x ------------------------ = 119.85 grams Br or 120 grams Br (sig figs)

                                     1 mole

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Answer:

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Explanation:

The dissociation reaction of KBrO₃ is:

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This dissolution consume heat that is evidenced with the decrease in water temperature.

The heat consumed is:

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Where C is specific heat of water (4,186 J/mol°C)

ΔT is the temperature changing (18,0°C - 13,0°C = 5,0°C)

And m is mass of water (150,0 mL ≈ 150,0 g)

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Thus, ΔH of dissociation is:

3,14kJ / 0,0826mol = <em>38,0 kJ/mol</em>

<em></em>

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