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3 years ago

Aurelie is doing a lab in her chemistry class. Her teacher defined a calorie as the amount of energy needed to raise the

Biology

1 answer:

Anarel [89]3 years ago

8 0

Answer:

1.50 cal

Explanation:

Given data:

Mass of water = 300 g

Initial temperature = 20 °C

Final temperature = 25 °C

Calories needed = ?

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Solution:

ΔT = T2 - T1

ΔT = 25 °C - 20°C

ΔT =

Q = m.c. ΔT

Q = 300 g . 4.18j/g. °C . 5°C

Q = 6270 J

J calories:

6270 / 4184 = 1.50 cal

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3 years ago

Which DNA fingering technique examines the length variation of DNA repeat sequences in human DNA?

DiKsa [7]

Answer: The question is incorrect, below is the correct question

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The correct answer to the question is option D

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3 years ago

Science:Imagine that only half of the water vapor that the air can hold is actually in the air.

yaroslaw [1]

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