Chemistry, 27.06.2019 00:00 skyemichellec

What is the volume of 7.25 g of oxygen gas at stp?

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Answer from: glazevaida9

The volume of 7.25 g oxygen gas at STP has been 5.075 L.

The oxygen has been assumed to be an ideal gas. The volume of 1 mole of an ideal gas at STP has been 22.4 L.

Volume of Oxygen at STP

The moles of a gas has been given as:

$\rm Moles=\dfrac{Mass}{Molar\;mass}$

The given mass of oxygen has been 7.25 g.

The molar mass of oxygen has been 32 g.

The moles of oxygen gas have been given as:

$\rm Moles\;O_2=\dfrac{7.25}{32}\\Moles\;O_2= 0.226\;mol$

The moles of oxygen available has been 0.226 mol.

The volume of 0.226 mole oxygen at STP has been:

$\rm 1\;mol=22.4\;L\\0.226\;mol=0.226\;\times\;22.4\;L\\0.226\;mol=5.075\;L$

The volume of 7.25 g oxygen gas at STP has been 5.075 L.

Learn more about volume at STP, here:

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Answer from: rileyeddins1010

5.15 L

Step-by-step explanation:

This looks like a case where we can use the Ideal Gas Law to calculate the volume.

pV = nRT Divide both sides by p

V = (nRT)/p

Data:

m = 7.25 g

R = 0.083 14 L·atm·K⁻¹mol⁻¹

T = (0 +273.15) K = 273.15K

p = 1 bar (Note: STP is 1 bar and 0°C)

Calculations:

(a) Moles of O₂

n = m/M

n = 7.25/32.00

n = 0.2266 mol

(b) Volume

V = (0.2266 × 0.083 14 × 273.15)/1

V = 161.3/2.00

V = 5.15 L

Answer from: Quest

mechanics (greek is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

explanation:

Answer from: Quest

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

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