Chemistry, 15.10.2020 07:01 jamarcuswilliam2515

Calculate the mass of onygen gas whose
volume is 320mL at 17 degree celsius and 2 atm Pressure

Answers: 3

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Answer from: makayladurham19

The mass of oxygen will be "0.96 g".

Given:

Volume,

V = 320 mL

or,

= 0.32 L

Temperature,

T = 17°C

or,

= 290 K

Pressure,

P = 2 atm

General gas constant,

R = 0.821 atm.L/mol.K

As we know the formula,

→ PV = nRT

By substituting the values, we get

$2\times 0.32=n\times 0.0821\times 290$

$0.64=n\times 23.81$

$n = \frac{0.64}{23.81}$

$= 0.03 \ mol$

hence,

→ Mass of oxygen = $Number \ of \ moles\times Molar \ mass$

= $0.03\times 32$

= $0.96 \ g$

Thus the above answer is right.

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Answer from: almaga1979orfvwo

The mass of oxygen gas is 0.96 g.

Explanation:

Given data:

Mass of oxygen gas = ?

Volume of as = 320 mL (320mL × 1L /1000 mL = 0.32 L)

Temperature of gas = 17 °C

Pressure of gas = 2 atm

Solution:

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K

T = temperature in kelvin

Now we will convert the temperature.

17+273 = 290 K

Now we will put the values in formula.

2 atm × 0.32 L = n × 0.0821 atm.L/ mol.K × 290 K

0.64 atm.L = n × 23.81 atm.L/ mol.

n = 0.64 atm.L / 23.81 atm.L/ mol.

n = 0.03 mol

Mass of oxygen:

Mass = number of moles × molar mass

Mass = 0.03 mol × 32 g/mol

Mass = 0.96 g

The mass of oxygen gas is 0.96 g.

Answer from: Quest

A3.5 gap gps and your masters degree

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

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Calculate the mass of onygen gas whose
volume is 320mL at 17 degree celsius and 2 atm Pressure...