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kodGreya [7K]
2 years ago
6

Help? please and thank you! very much appreciated

Chemistry
1 answer:
Triss [41]2 years ago
4 0

Answer:

Option B is correct

Explanation:

The Formula of Nitrate is NO₃⁻

<u>-TheUnknown</u><u>Scientist</u>

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The mass of water in a single popcorn kernel was found to be 0.905 grams after it popped at a temperature of 175 °C. Using the i
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Answer:

0.583 kilojoules

Explanation:

The amount of heat required to pop a single kernel can be calculated using the formula as follows:

Q = m × c × ∆T

Where;

Q = amount of heat (J)

m = mass of water (g)

c = specific heat capacity of water (4.184 J/g°C)

∆T = change in temperature

From the given information, m = 0.905 g, initial temperature (room temperature) = 21°C , final temperature = 175°C, Q = ?

Q = m × c × ∆T

Q = 0.905 × 4.184 × (175°C - 21°C)

Q = 3.786 × 154

Q = 583.044 Joules

In kilojoules i.e. we divide by 1000, the amount of heat is:

= 583.04/1000

= 0.583 kilojoules

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3 years ago
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Explanation:

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Explanation:

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