We know that:
f * λ = c
<span>and
E = h*f
so,rearranging:
</span>
<span>E/h = C/λ
given:
h = </span><span>6.90 × 10^2 nm
</span><span>substituting the values:
E = </span> C/λ<span> x h
(c is the speed of light;that is 3x10^8 m/s)
</span> = 3x10^8 x 6.626x10^-34 / 6.90 x10^7m x 6.022x10^23
Hence,
using calculator:
we get,
E = 1.69 x 10^5 Joules
Answer:
bruh, just go in your bathroom and look for cleaning products
Explanation:
Answer:
Explanation:
Hello,
In this case, the undergoing precipitation reaction is:
Thus, for the 0.2500 moles of silver nitrate, the following mass of magnesium chloride is consumed (consider their 2:1 molar ratio):
Therefore, the purity of the sample is:
Best regards.
Answer:
% yield = 58.33 %
Explanation:
∴ moles X = 2.00 mol
∴ moles Y = 2.00 mol
∴ moles Z = 1.75 mol = moles produced
- % Yield = ( moles produced / theoretical moles ) × 100
theoretical moles:
⇒ moles Z = (2.00 mol X)*(3 mol Z/2 mol X) = 3.00 mol Z
⇒ % yield = [(1.75 mol produced)/(3.00 theoretical mol)]×100
⇒ % yield = 58.33 %
Answer:
the answer is 0.4588162459
Explanation:
1 mole = 0.010195916576195
= 45 ×"
