Please answer these questions it is simple and easy every one look
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I think that the ants would also locate the source of the food very fast and that they would go there directly -as if they were telling each other where the food is. And it is true, the ants can tell the other ants to follow them in the source of food, similarly to bees.
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Explain how human activities are changing the environment globally with serious consequences
A catalyzed reaction will have a ____ activation energy, and this leads to a _____ in the reaction rate. A) lower, decrease B) lower, increase C) higher, decrease D) higher, increase
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Answer:
0.004 moles
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
0.004 moles
Hope this helps you
(2) 45 K (4) 45°C
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So
273K = 0C
So
325K = 52C
So
The water would need to be warmer than 52C to give the iron bar energy
So the answer is (3) 65C
Final answer:
The iron bar at 325 K will gain energy from the water if the water temperature is higher, which is the case when it is 65°C (338 K). The bar would lose energy to the other given temperatures (45 K, 65 K, 45°C).
Explanation:
The transfer of thermal energy, or heat, is from a body at higher temperature to a body at lower temperature. The iron bar in your question is at 325 K. The temperatures of the water samples are closer to room temperature (around 293 K) when expressed in Kelvin. Therefore, the iron bar will gain energy from the water if the temperature of the water is 65°C (338 K), as it is the only option above the temperature of the iron bar. It would lose energy to the other options (45 K, 65 K, 45°C).
Learn more about Heat Transfer here:
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I.e. a stove pot
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Molar Mass NaF = 41.98 g/mol
Molarity = 0.032 M
Mass = Molarity * molar mass * volume
Mass = 0.032 * 41.98 * 0.5
= 0.67168 g of NaF(aq)
hope this helps!
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number of moles = mass of solte / molar mass
n = 3.82 / 64.066
n = 0.0596 moles
hope this helps!
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I hope this helps.
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