PV = nRT (where P = pressure; V = volume; n = number of moles; R = gas constant; T = Temperature)
Moles of H₂ = mass of H₂ ÷ molar mass of H₂
= 6.0 g ÷ 2 g/mol
= 3.0 mol
To get the answer in atmospheres, let's convert C to K
25 °C ≡ 298 K
Now, based on the formula above
P = (nRT) ÷ V
P = (3.0 mol × (0.082 L · atm/mol · K) × 298 K) ÷ 73 L
≈ 1 .004 atm
Answer:
The answer to your question is 114.7% the percent is higher than expected.
Explanation:
Data
mass of HCl = 10.5 g
molar mass of HCl = 36.5 g
mass of NaOH = 19.3 g
molar mass of NaOH = 58.5
Process
1.- Write the balanced chemical reaction
HCl + NaOH ⇒ NaCl + H₂O
2.- Calculate the theoretical yield
36.5 g of HCl -------------- 58.5 g of NaCl
10.5 g of HCl -------------- x
x = (10.5 x 58.5)/36.5
x = 16.83 g
3.- Calculate the percent yield
% yield = (19.3/16.83) x 100
% yield = 114.7
Because it is less stable than phosphorous
1. A thermodynamic quantity that is the difference between the internal energy of a system and the product of itsabsolute temperature and entropy; the capacity of a system to do work, as in an exothermic chemical reaction.<span>2. </span>A thermodynamic quantity that is the difference between the enthalpy and the product of the absolute temperatureand entropy of a system. Also called <span>Gibbs free energy</span>.
