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mezya [45]
3 years ago
6

All molecules are always made of

Chemistry
2 answers:
Mademuasel [1]3 years ago
6 0
Atoms that are held together by chemical bonds
Andreas93 [3]3 years ago
5 0

Answer:

Atoms and matter

Explanation:

atoms are the building blocks and matter is everything

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While heating up a 25 gram sample of concrete (specific heat = 0.210-cal/g°C), your initial tempărature is room temperature (25°
Lana71 [14]

Answer:

Final temperature  = 83.1 °C

Explanation:

Given data:

Mass of concrete = 25 g

Specific heat capacity = 0.210 cal/g. °C

Initial temperature = 25°C

Calories gain = 305 cal

Final temperature = ?

Solution:

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

ΔT = T2 - T1

305 cal = 25 g ×0.210 cal/g.°C × T2 -  25°C

305 cal = 5.25cal/°C × T2 -  25°C

305 cal / 5.25cal/°C = T2 -  25°C

58.1 °C = T2 -  25°C

T2 = 58.1 °C + 25°C

T2 = 83.1 °C

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Which organisms are the best example of producers in a food web? A. zooplankton B. krill C. killer whales D. marine phytoplankto
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D. Marine phytoplankton
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Which reaction occurs spontaneously
coldgirl [10]

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Explanation:

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