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3 years ago

9

Are Flakes of brick Mechanical or Chemical Weathering

2 answers:

charle [14.2K]3 years ago

8 0

mechanical weathering is your answer

Alex777 [14]3 years ago

4 0

Flakes of break would be a mechanical weathering because chemical weathering means it would typically be changing

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4vir4ik [10]

Answer: b

Explanation:

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barxatty [35]

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3 years ago

Gold has a specific heat of 0.129 J/(g×°C). How many joules of heat energy are required to raise the temperature of 15 grams of

Elodia [21]

Answer:

$\boxed {\boxed {\sf 121.905 \ J }}$

Explanation:

We are asked to find the energy given mass, specific heat, and change in temperature. Therefore, we must use this formula;

$q= mc \Delta T$

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ΔT= final temperature - initial temperature
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Now we know all the values:

$m= 15 \ g \ \\c= 0.129 \ J / (g* \textdegree C) \\\Delta T= 63 \ \textdegree C$

Substitue the values into the formula.

$q= (15 \ g)( 0.129 \ J / (g* \textdegree C)) ( 63 \ \textdegree C)$

Multiply the first numbers together. The grams will cancel.

$q= (1.935 \ J/ \textdegree C) ( 63 \ \textdegree C)$

Multiply again, this time the degrees Celsius cancels.

$q= 121.905 \ J$

<u>121.905 Joules</u> are required.

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