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3 years ago

What is the pressure of 5.0 mol nitrogen (N2) gas in a 2.0 L container at 268

Chemistry

1 answer:

CaHeK987 [17]3 years ago

8 0

Answer: 54.94atm

Explanation: Please see attachment for explanation

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HELP HELP ASAP I WILL MARK BRAINLIEST

likoan [24]

Answer:

i cant read it

Explanation:

6 0

3 years ago

If you combine 230.0 mL 230.0 mL of water at 25.00 ∘ C 25.00 ∘C and 120.0 mL 120.0 mL of water at 95.00 ∘ C, 95.00 ∘C, what is t

Thepotemich [5.8K]

Answer: The final temperature of the mixture is 49°C

Explanation:

To calculate the mass of water, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

For cold water:

Density of cold water = 1 g/mL

Volume of cold water = 230.0 mL

Putting values in above equation, we get:

$1g/mL=\frac{\text{Mass of water}}{230.0mL}\\\\\text{Mass of water}=(1g/mL\times 230.0mL)=230g$

For hot water:

Density of hot water = 1 g/mL

Volume of hot water = 120.0 mL

Putting values in above equation, we get:

$1g/mL=\frac{\text{Mass of water}}{120.0mL}\\\\\text{Mass of water}=(1g/mL\times 120.0mL)=120g$

When hot water is mixed with cold water, the amount of heat released by hot water will be equal to the amount of heat absorbed by cold water.

$Heat_{\text{absorbed}}=Heat_{\text{released}}$

The equation used to calculate heat released or absorbed follows:

$Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})$

$m_1\times c\times (T_{final}-T_1)=-[m_2\times c\times (T_{final}-T_2)]$ ......(1)

where,

q = heat absorbed or released

$m_1$ = mass of hot water = 120 g

$m_2$ = mass of cold water = 230 g

$T_{final}$ = final temperature = ?°C

$T_1$ = initial temperature of hot water = 95°C

$T_2$ = initial temperature of cold water = 25°C

c = specific heat of water = 4.186 J/g°C

Putting values in equation 1, we get:

$120\times 4.186\times (T_{final}-95)=-[230\times 4.186\times (T_{final}-25)]$

$T_{final}=49^oC$

Hence, the final temperature of the mixture is 49°C

4 0

4 years ago

13. Every day on his ride to school, Max sees some sedimentary rock. He starts to wonder: Could

Blizzard [7]

Yes is the answer :);)

8 0

3 years ago

Read 2 more answers

3. (04.03 LC)

Masja [62]

Physical change!

a solid that turns into a liquid is called melting and melting is a physical change.

something like that. sorry if it’s wrong

6 0

3 years ago

Read 2 more answers

How much energy in kilojoules is released when 23.4 g of ethanol vapor at 83.0 ∘C is cooled to -15.0 ∘C ?

slamgirl [31]

Answer : The amount of in kilojoules released is, -5.53 kJ

Explanation :

Formula used :

$q=m\times c\times (T_{final}-T_{initial})$

where,

q = heat released = ?

c = specific heat of ethanol = $2.41J/g^oC$

m = mass of ethanol = 23.4 g

$T_{final}$ = final temperature = $-15.0^oC$

$T_{initial}$ = initial temperature = $83.0^oC$

Now put all the given values in the above formula, we get:

$q=23.4g\times 2.41J/g^oC\times (-15.0-83.0)^oC$

$q=-5526.612J=-5.53\times 10^3J=-5.53kJ$

Therefore, the amount of in kilojoules released is, -5.53 kJ

5 0

4 years ago