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Igoryamba
1 year ago
12

Calculate the density of oxygen, O2 , under each of the following conditions:

Chemistry
1 answer:
sdas [7]1 year ago
4 0

The density of oxygen, O2 , under each of the following conditions:

STP 1.00 atm and 20.0°C is 1.78 g/L.

<h3>What is the density of a substance?</h3>

Density is the ratio of mass and volume of a substance.

The density of oxygen under the given conditions is calculated as follows:

STP = standard temperature and pressure.

standard pressure = 1 atm pressure

standard temperature = 25°C

Volume of 1 mole of a gas at STP = 22.4 L/mol

Thus, 1 mole of O2 occupies the volume , V = 22.4 L/mol

Volume of oxygen at 20°C is calculated using:

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁

V₂ = 22.4 * 20/25

V₂ = 17.92

Hence;

density = 32 g/17.92

Density = 1.78 g/L

In conclusion, density is ratio of mass and volume.

Learn more about density at: brainly.com/question/952755

#SPJ1

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Hitman42 [59]

Answer:

Partial pressure of CO2 = 16 atm

Explanation:

Total number of moles of gases = 4+1 = 5 moles

Mole fraction of CO2 = 4/5

Partial pressure of CO2 = mole fraction of CO2 × total pressure

Partial pressure of CO2 = (4/5) × 20

Partial pressure of CO2 = 16 atm

7 0
2 years ago
Could volume by displacement be used to determine the volume of a lump of rock salt? Explain would be nice
Readme [11.4K]

Yes it could, but you'd have to set up the process very carefully.
I see two major challenges right away:

1).  Displacement of water would not be a wise method, since rock salt
is soluble (dissolves) in water.  So as soon as you start lowering it into
your graduated cylinder full of water, its volume would immediately start
to decrease.  If you lowered it slowly enough, you might even measure
a volume close to zero, and when you pulled the string back out of the
water, there might be nothing left on the end of it.

So you would have to choose some other fluid besides water ... one in
which rock salt doesn't dissolve.  I don't know right now what that could
be.  You'd have to shop around and find one.

2).  Whatever fluid you did choose, it would also have to be less dense
than rock salt.  If it's more dense, then the rock salt just floats in it, and
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5 0
3 years ago
Which terms means the loudness of sound?
tangare [24]

Explanation:

The answer is D, pitch.

6 0
3 years ago
Calculate the volume of acetone with the same mass as 15.0 mL of mercury. The density of mercury is 13.59 g/mL. The density of a
lubasha [3.4K]

Answer:

Volume of acetone = 257.4 mL

Explanation:

Density = mass / volume

Density Hg = Mass Hg / Volume Hg

13.59 g/mL = Mass Hg / 15 mL Hg

13.59 g/mL . 15 mL = Mass Hg → 203.85 g

This is the mass of acetone

Density acetone =  Mass acetone / Volume acetone

0.792 g/mL = 203.85 g / Volume of acetone

Volume of acetone = 203.85 g / 0.792 g/mL

Volume of acetone = 257.4 mL

3 0
3 years ago
Read 2 more answers
Which answer choice correctly lists the elements found in Period 2 of the periodic table?
ohaa [14]

Answer:

The answer to your question is letter A. Oxygen, Fluorine, Neon

Explanation:

Data

Elements of the 2nd period

A. The three elements of this list are found in the second period.

B. The three elements of this list are found in the third period

C. One element of this list is in the 2nd period, another in the third and the last one in the fourth period.

D. The elements of this list are found in the second group but not only Beryllium is found in the 2nd period.

3 0
3 years ago
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