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kow [346]
2 years ago
5

Good day please help me thank you

Chemistry
2 answers:
NARA [144]2 years ago
6 0
I think c I’m not positive about the question but I think c
mario62 [17]2 years ago
6 0

Answer:

D Transportation it makes sence if it doesn't just re read it

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Because of the sun reflects onto the moon and makes it brighter.
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Answering questions by analyzing specific observations and using them to come to a more general understanding is known as ______
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Primavera?

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A goldsmith melts 12.4 grams of gold to make a ring. The temperature of the gold rises from 26°C to 1064°C, and then the gold me
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Problem One

You will use both m * c * deltaT and H = m * heat of fusion.

Givens

m = 12.4 grams

c = 0.1291

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H = m * c * deltaT + m * H_f

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H = 1660.1 + 787.4

H = 2447.5 or 2447.47 is the exact answer. I have to leave the rounding to you. I have no idea where to round it although I suspect 2450 would be right for 3 sig digs.

Problem Two

Formula and Givens

t1 = 14.5

t2 = 50.0

E = 5680

c = 4.186

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Solution

5680 = m * 4.186 * (50 - 14.5)

5680 = m * 4.186 * (35.5)

5680 = m * 148.603 * m

m = 5680 / 148.603

m = 38.22 grams That isn't very much. Be very sure you are working in joules. You'd leave that many grams in the kettle after drying it thoroughly.

m = 38.2 to 3 sig digs.

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3 years ago
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Solution A: pH of 10
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I think it’s C,B,A

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