Answer:
3) 6.94 moles Li
Explanation:
I'm not completely sure but I think this is the right answer
When you want to melt an ice, you only need the latent energy of fusion, <span>δhfus. We use the given value, then multiply this with the given amount to determine the amount of energy. Since the energy is per mole basis, use the molar mass of ice which is 18 g/mol. The solution is as follows:
</span>ΔH = 5.96 kJ/mol * 1 mol/18 g * 500 g
<em>ΔH = 165.56 kJ</em><span>
</span>
Answer:
b
Explanation:
i read this once and remember,trust me!
Answer:
5.88 x 10⁻⁴Hz
Explanation:
Given parameters:
Wavelength = 510 x 10⁹m
Unknown:
Frequency = ?
Solution:
To solve this expression, we use the equation below:
V = f∧
V is the velocity = 3 x 10⁸m/s
f is the frequency
∧ is the wavelength
3 x 10⁸ = f x 510 x 10⁹
f = 5.88 x 10⁻⁴Hz
