What is the answer??
2 answers:
You might be interested in
I attached the working and the answer to the question below.
<span>Note that in the formula, C = speed of light, ν = frequency, λ= wavelength
</span><span>
The wavelength of a 4.3 x 10</span>¹⁵<span> /s wave is 6.98 </span>× 10⁻⁶.
<span>Note that in the formula, C = speed of light, ν = frequency, λ= wavelength
</span><span>
The wavelength of a 4.3 x 10</span>¹⁵<span> /s wave is 6.98 </span>× 10⁻⁶.
Answer:
1.75M
Explanation:
The problem deals with finding the molarity of the given compound.
The compound is:
Na₂SO₄.10H₂O
Mass of the compound = 10.5kg = 10500g
Volume of the compound = 18.6L
Molarity is the number of moles of solute in a solution;
Molarity =
Number of moles =
Molar mass of Na₂SO₄.10H₂O = 2(23) + 32 + 4(16) + 10[2(1) + 16]
= 322g/mol
Now;
Number of moles = = 32.6mole
So;
Molarity = = 1.75M