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sweet-ann [11.9K]
4 years ago
14

Endothermic non example

Chemistry
1 answer:
Ipatiy [6.2K]4 years ago
5 0

Answer:

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The statement that people who exercise for an hour may have lower cholesterol levels is it a hypothesis, law, or observation?
VLD [36.1K]

Answer:

hypothesis

Explanation:

7 0
4 years ago
A glass laboratory flask is filled with gas at 24 ∘C and 0.95 atm pressure, sealed, and then heated to 104 ∘C. What is the press
Elan Coil [88]

The pressure inside the flask on heating it is given as 1.21 atm.

<u>Explanation:</u>

As per Guy Lussac's law, the pressure of any concealed volume of gas particles will be directly proportional to the temperature of the container of the gas particles.

So P ∝ T

To convert celsius to kelvin, add 273.15 to the temperature value in celsius

Since, here the initial temperature of the flask is given as 24°C, so in kelvin it will be 297.15 K. Similarly, the final temperature is said to be 104°C which will be equal to 377.15 K. Then the final pressure will be increased as there is increase in temperature. So, the final pressure inside the flask can be obtained as

\frac{P_{1} }{T_{1} } = \frac{P_{2} }{T_{2} }

P_{2} = \frac{P_{1} }{T_{1} } \times T_{2} =\frac{0.95}{297.15} \times 377.15 =1.21\ atm

So, the pressure inside the flask on heating it is given as 1.21 atm.

3 0
4 years ago
Evaporation is the process that causes dew to form. <br> True or False
weeeeeb [17]

Answer:

false

Explanation:

Dew forms as temperatures drop and objects cool down. ... This forces water vapor in the air around cooling objects to condense. When condensation happens, small water droplets form—dew. The temperature at which dew forms is called the dew point

7 0
3 years ago
The density of an object is 2 g/mL and has a mass of 18g, what is the volume of the object?
alexgriva [62]

Answer:

36

orrr

20

Explanation:

36 explanation:18x2=36

20 explanation:18+2=20

6 0
3 years ago
Read 2 more answers
What is the total pressure (in atm) inside of a vessel containing N2 exerting a partial pressure of 0.256 atm, He exerting a par
Bezzdna [24]

Answer: Total pressure inside of a vessel is 0.908 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual partial pressures. exerted by each gas alone.

p_{total}=p_1+p_2+p_3

p_{N_2} = partial pressure of nitrogen = 0.256 atm

p_{He} = partial pressure of helium = 203 mm Hg = 0.267 atm  (760mmHg=1atm)

p_{H_2} = partial pressure of hydrogen =39.0 kPa = 0.385 atm  (1kPa=0.00987 atm)

Thus p_{total}=p_{H_2}+p_{He}+p_{H_2}

p_{total} =0.256atm+0.267atm+0.385atm =0.908atm

Thus total pressure (in atm) inside of a vessel is 0.908

8 0
3 years ago
Read 2 more answers
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