<span>
According to Avogadro's law, 1 mole ,i.e., 6.2 * 10^23 particles of
every substance have mass equal to its molecular mass in grams. Since
the molecular mass of CuSO4 is 80 grams. It means 6.2 * 10^23 particles
of CuSO4 have a mass of 80 grams. Now u can calculate the mass of 3.36 *
10^23 particles by unitary method 3.36 * 10^23 *80/6.23 * 10^23 grams </span>
The answer to this question is x=2
I think it is 6(4x-8)-9y=12 hope this helps :)
Answer:
2.75 m²
Step-by-step explanation:
From the information given:
the thickness of the paint = 0.07 cm = (0.07/100) m
= 0.0007 m thick
the diameter hemispherical dome = 50 m
∴
radius of the dome = 50m /2 = 25 m
The volume of a hemispherical dome is expressed as:
Thus, the change in the volume now is:
∴
dV = 2π × (25)² (0.0007)
where;
dr = 0.0007
dV = 2π × (25)² (0.0007)
dV = 2.75 m²