Answer:
Molarity of solution is 0.0928 M.
Explanation:
Balanced equation:
Number of moles of in 10.8 mL of 0.0215 M solution
= = 0.000232 moles
Let's assume molarity of solution is S(M)
Number of moles of in 12.50 mL of S(M) solution
= = 0.0125S moles
According to balanced equation, 5 moles of react with 1 mol of
So, 0.0125S moles of react with moles of
Hence,
or, S = 0.0928
So, molarity of solution is 0.0928 M.
Life is what this is called and your welcome
Nuclear i believe because it has nucleus in the sentence and also talk about it
Answer:
Mass, m = 19466.7 kg
Explanation:
Given that,
Portland cement concrete (PCC) has a density of 150 lb/ft³
We need to find how many kilograms of PCC are required to cast a cylindrical column 1.15 m in diameter and 7.8 m in height.
Since, 1 kg = 2.205 lb
1 lb/ft³ = 16.018 kg/m³
150 lb/ft³ = 2402.77 kg/m³
Density,
m is mass of PCC in kg and V is volume of cylinder
So, the mass of PCC required is 19466.7 kg.
Mass of ammonium sulfate = 660.7 g
<h3>Further explanation</h3>
Given
3.01 x 10²⁴ molecules of ammonium sulfate
Required
mass
Solution
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
mol ammonium sulfate (NH₄)₂SO₄ :
n = N : No
n = 3.01 x 10²⁴ : 6.02 x 10²³
n = 5
mass ammonium sulfate :
= mol x MW
= 5 x 132,14 g/mol
= 660.7 g