Calculate the heat energy for this scenario: You are repeating the food experiment we did in class with a different food snack. At the beginning of this experiment, you started with 25 grams of water at 22 deg * C At the end of the experiment, the final temperature of the water is 45°C. The specific heat of water is 4.18J / (deg) * CSub and solve
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Answer:
Mass of water (m) = 25 grams = 0.025 kg (since 1 g = 0.001 kg)
Specific heat of water (c) = 4.18 J/(g°C) = 4.18 J/(kg°C)
Initial temperature () = 22°C
Final temperature ( )= 45°C
Change in temperature (ΔT):
ΔT=-
=45°−22°=23°
Now, calculate the heat energy (Q)
Q=mass×specific heat×ΔT
Q=0.025kg×4.18J/(kg°C)×23°C
Q≈2.44kJ
So, the heat energy for this scenario is approximately 2.44 kilojoules (kJ).
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TrueFalse
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Answer:
False
Explanation:
it contains pepsin and hydrochloric acid
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Final answer:
The concept of an ideal gas is chiefly used to explain the behavior of a gas sample according to the ideal gas law. It's not primarily used to determine the mass of a gas sample, or whether a gas is monatomic or diatomic.
Explanation:
The concept of an ideal gas is primarily used to explain the behavior of a gas sample. An ideal gas is a theoretical gas composed of randomly moving, non-interacting point particles. It follows the ideal gas law which is PV=nRT, where P is the pressure, V is the volume, n is the number of moles, R is the universal gas constant, and T is the absolute temperature. The ideal gas law allows us to predict how a gas will behave under different conditions of pressure, volume, and temperature.
The mass of a gas sample is inherently tied to the moles of gas, per the molar mass concept in the ideal gas law. As for whether a gas is monatomic or diatomic, this depends on the atomic structure and bonding of the specific gas species, and not the ideal gas concept itself.
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Answer:
A.
Explanation:
The amount of mass always stays the same, matter cannot be created nor destroyed, it can only change forms. Thus, the answer is A.
In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction.
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