Calculate the pressure in atm, if 0.00825 moles occupies 174 mL at -15 celcius.

1 answer:

6 0

Answer is: the pressure is 1.12 atm.
n(O₂) = 0.00825 mol, amount of substance.
V = 174 mL ÷ 1000 mL/L = 0.174 L, volume of gas.

T = 15°C = 288.15 K; temperature.
R = 0.08206 L·atm/mol·K, universal gas constant.
Ideal gas law: p·V = n·R·T.
p = n·R·T / V.
p = 0.00825 mol · 0.08206 L·atm/mol·K · 288.15 K / 0.174 L.
p = 1.12 atm.

You might be interested in

12.A piece of magnesium is in the shape of a cylinder with a height of 5.62 cm

yaroslaw [1]

Answer:

Density, d = 1.779 g/cm³

Explanation:

The density of a material is given by its mass per unit volume.

Here, height of a piece of magnesium cylinder, h = 5.62 cm

Its diameter, d = 1.34 cm

Radius = 0.67 cm

Volume of he cylinder,

$V=\pi r^2 h\\\\\text{Putting the value of r and h, we get :}\\\\V=(\pi \times (0.67)^2\times 5.62)\ cm^3$

$d=\dfrac{m}{V}\\\\d=\dfrac{14.1\ g}{(\pi \times (0.67)^2\times 5.62)\ cm^3}\\\\d=1.779\ g/cm^3$

So, the density of the sample is 1.779 g/cm³.

4 0

3 years ago

What are geometric isomers?

irina [24]

C. compounds that have the same atoms arranged in the same order, but with different three-dimensional orientations.

3 0

3 years ago

PLEASEEE HELPPPP I WILL AWARD BRAINLIEST

vampirchik [111]

Yesssirrrrrrrrr someone answer

3 0

3 years ago

What kind of a system is a coffee held in a cup?? don't spam..

bagirrra123 [75]

Answer:

open system

Coffee held in a cup is an open system because it can exchange matter water vapors and energy heat with the surroundings.

3 0

3 years ago

Read 2 more answers

Describe how a baseball player accelerates as he runs around the bases after hitting home run

Wewaii [24]

he accelerates when he runs away from home plate. as he reaches each base, the player accelerates by changing direction. he accelerates again when slowing down after reaching home plate.

4 0

3 years ago