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Akimi4 [234]
3 years ago
5

24. A hypothesis cannot be considered a

Chemistry
2 answers:
Virty [35]3 years ago
6 0
B. preliminary conclusion
Dafna1 [17]3 years ago
3 0

Answer:

B. Preliminary conclusion

Explanation:

The answer is B because a hypothesis is really an educated guess you make in regards to a question, usually before performing an experiment, so it can't be a preliminary conclusion because you don't really have any solid evidence to support your hypothesis, you only have background information. You will either be able/not be able to support your hypothesis after your expirement has concluded.

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3 years ago
How many grams of water at 50◦c must be added to 16 grams of ice at −12◦c to result in only liquid water at 0◦c?
melisa1 [442]

When water at 50 C is added to ice at -12 C, heat is transferred from hot water to ice.

- Heat given out by water = Heat absorbed by ice

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q = m CwaterΔTq = m (4.184\frac{J}{(g.^{0}C)} )(0^{0}C-50^{0}C)

Calculating heat absorbed by 16 g of ice: Ice at -12^{0}C is converted to ice at O^{0}C and then ice at O^{0} C to water at 0^{0}C

q = m CiceΔT + m (Heat of fusion)

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q = 405.12 J +5336.8 J =5741.92 J

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