The Cretaceous-Tertiary extinction event , the name given to the die off dinosaurs, they all died off about 65.5 million years ago . They died by climate and geological changes .
Answer:
16.7 g of glucose
Explanation:
Convert grams of H₂O to moles. <em>0.555 mol</em>
We can use the chemical equation to determine the theoretical yield. Based on the equation, for every 6 moles of H₂O, 1 mole of glucose is produced. The ratio of glucose moles to H₂O moles is 1/6.
Multiply the moles of H₂O by the ratio to find moles of glucose. <em>0.0925 mol</em>
Convert moles of glucose to grams. <em>16.7 g</em>
Answer:
N = 603.32 × 10 ²⁰
Explanation:
Given data:
Wavelength of photon = 12.0 μm or 12 × 10 ⁻⁶ m
Energy = 1.0 KJ or 1000 j
Number of photons = ?
Solution:
Formula:
E = n . h . f
E = energy
N = number of photons
h = planck's constant
f = frequency
it is known that
f = c/λ
thus,
E = N . h . c / λ
Now we will put the values in formula.
1000 j = ( N. 6.63 × 10 ⁻³⁴ j.s × 3 × 10⁸ m/s ) / 12 × 10 ⁻⁶ m
N = 1000 j ×12 × 10 ⁻⁶ m / 6.63 × 10 ⁻³⁴ j.s × 3 × 10⁸ m/s
N = 12000 j × 10 ⁻⁶ m / 19.89 × 10 ⁻²⁶ j. m
N = 603.32 × 10 ²⁰
