Chemistry, 05.05.2020 23:07 onewaydemon

A sample of 1.00 moles of oxygen at 50°C and 98.6 kPA occupies what volume?

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Answer from: keshjdjsjs

27.3L

Explanation:

Looking at the parameters given;

Number of moles (n)= 1.00 moles

Temperature (T) =50° +273= 323K

Pressure (P)= 98.6KPa or 0.97 atm ( to obtain this, divide 98.6×10^3/101325)

R= 0.082 L.atmK-1mol-1

Then we apply the ideal gas equation

PV=nRT

V= nRT/P

V= 1.00×0.082×323/0.97

V= 27.3L

Answer from: dameiranderson

The volume occupied by the gas is 27.25 L.

Explanation:

The ideal gas equation dictates that the kinetic energy is directly proportional to the temperature in an ideal gas.

And an ideal gas is a hypothetical gas made up of point particles with no attraction or repulsion between them.

The ideal gas equation is: PV = nRT

To find the volume occupied by a gas, the values of the variables Temperature (T), Pressure (P), a constant (R: The universal constant of ideal gases), and the number of moles (n) must be taken.

The data they give us is:

n = 1.00 mol T = 50 ° C = 323.15K P = 98.6kPA = 0.9731063 atm R = 0.08205746 atm * L / mol * K

Then the variable we want to find is cleared, that is, the volume:

V = nRT / P

Then the data is placed:

V = 1.00mol * 0.08205746 * 323.15K / 0.973 atm

And the answer is given in units of volume:

V = 27.25 L

Answer from: Quest

the balanced equation for reaction of ca metal with o2 to produce cao is as below

2 ca+ o2→ 2 cao2

explanation

the reaction is balanced since the number of atoms in reactant side is equal to number of atoms in product side. for example they are 2 atom of ca in reactant side and 2 atoms of ca in the product side.

the process is a meet the requirement of redox reaction because : calcium is oxidized from oxidation state 0 to 2+ while oxygen is reduced from oxidation state 0 to 2-

Answer from: Quest

you need to have a picture of the atom that way we can answer it

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