All categories

3 years ago

How many oxygen molecules are in 22.4 liters of oxygen gas at 273 K and 101.3 kPa

2 answers:

4 0

This 273 K and 101.3 kPa is Standart conditions, so 22.4 L is 1 mol, 1 mol anything contains <span>6.023 x 10^23,
AnswerA</span>

Rina8888 [55]3 years ago

3 0

Ow many oxygen molecules are in 22.4 liters of oxygen gas at 273k and 101.3kpa
First solve the number of moles of the oxygen gas by using the ideal gas equation:
PV = nRT
Where n is the number of moles
n = PV/RT
n = (101 300 Pa) (22.4 L) (1 m3/1000 L ) / ( 8.314 Pa m3 / mol K) ( 273 K)
n = 1 mol O2
the number of molecules can be solve using avogrados number 6.022x10^23 molecule / mole
molecules of one mole O2 = 6.022x 10^23 molecules

You might be interested in

What type of mutation occurred?

kotykmax [81]

Answer:

Insertions are mutations in which extra base pairs are inserted into a new place in the DNA. Deletions are mutations in which a section of DNA is lost, or deleted..
Germline mutations occur in gametes. Somatic mutations occur in other body cells.
Chromosomal alterations are mutations that change chromosome structure.
Point mutations change a single nucleotide.
Frameshift mutations are additions or deletions of nucleotides that cause a shift in the reading frame.
Deletion is a type of mutation involving the loss of genetic material. It can be small, involving a single missing DNA base pair, or large, involving a piece of a chromosome.
Base substitutions are the simplest type of gene-level mutation, and they involve the swapping of one nucleotide for another during DNA replication. For example, during replication, a thymine nucleotide might be inserted in place of a guanine nucleotide.
Silent mutations are base substitutions that result in no change of the amino acid or amino acid functionality when the altered messenger RNA (mRNA) is translated. For example, if the codon AAA is altered to become AAG, the same amino acid – lysine – will be incorporated into the peptide chain..

8 0

2 years ago

Convert 696 cm3 to m3

PIT_PIT [208]

Answer:

0.000696

You're Welcome

8 0

2 months ago

2. Calculate the [H+] in the following solutions, given their pH, and identify the solution as acidic, basic or neutral.

givi [52]

Answer:

a) acidic; [H+] = 10^-2.5 = 3 x 10^-3

b) basic; [H+] = 10^-11.7 = 2 x 10^-12

c) slightly acidic (almost neutral); [H+] = 10^-6.8 = 1.6 x 10^-7

d) acidic; [H+] = 10^-3.31 = 4.9 x 10^-4

Explanation:

pH < 7 is acidic; pH > 7 is basic; pH = 7 is neutral

[H+] = 10^-pH

7 0

2 years ago

A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is

TiliK225 [7]

Answer:

Maximum safe operating temperature = 450 °C

Explanation:

First, the volume of the cylindrical vessel is determined using the formula:

v = πr²h

Radius, r, of stainless steel vessel = width or diameter / 2

r = 39.0 cm / 2 = 19.5 cm

height of vessel = 46.8 cm

volume of cylinder = 22/7 × 19.5² × 46.8 = 55929.343 cm³ = 0.05593 m³

Using the ideal gas equation to calculate the maximum safe temperature

PV = nRT

pressure, P = 5.30 MPa = 5.30 × 10⁶ Pa

R = 8.314 J/mol.K

n = mass of gas/ molar mass of gas

molar mass of SF₆ = 146 g/mol

mass of Sf₆ = 7.20 kg = 7200 g

n = 7200/146 = 49.315 moles

T = PV/nR

T = (5.30 × 10⁶ × 0.05593) / (49.315 × 8.314)

T = 722.98 K

T in °C = 714.98 - 273.15 = 449.83 °C

Therefore, maximum safe operating temperature = 450 °C

5 0

2 years ago

Which statement accurate describes plate tectonics?

WITCHER [35]

Answer:

the lithosphere is broken into sections called plates.

5 0

2 years ago

Read 2 more answers