Answer:
44.6millilitres
Explanation:
Using the general gas law equation as follows:
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (atm)
V1 = initial volume (L)
T1 = initial temperature (K)
P2 = final pressure (atm)
V2 = final volume (L)
T2 = final temperature (K)
According to this question;
V1 = 30mL
T1 = 273K (STP)
P1 = 1 atm (STP)
V2 = ?
T2 = 300K
P2 = 75.0 kPa = 75 × 0.00987 = 0.74atm
Using P1V1/T1 = P2V2/T2
1 × 30/273 = 0.74×V2/300
30/273 = 0.74V2/300
Cross multiply
300 × 30 = 273 × 0.74V2
9000 = 202.02V2
V2 = 9000/202.02
V2 = 44.55
V2 = 44.6millilitres.
The molar absorptivity is
Molar absorptivity is defined as the measure a compound's ability to absorb light of a specific wavelength. It is represented by the constant/symbol 'ε'.
The molar absorptivity is given by :
A = εcl
where A is the absorbance
ε is the molar absorptivity
c is the molar concentration of the compound
and l is the path length
here, the molar concentration of the solution is 0.16 mol
and the path length is 1 cm
to find the molar absorptivity , one must know the absorbance of the material.
(To know more about Molar absorptivity : brainly.com/question/18130658)
Answer:
102
Explanation:
(20+1+30)*2
you add the total number of atoms that can be found in one molecule of vitamin A then multiply by 2
Answer:
they pollute and mine the rocks
Explanation:
which changes the way rocks are
