Answer:
The energy of one photon of this light is 4.568 × 10∧ -19 J
Explanation:
Given data:
wavelength = 433.9 nm or 433.9 × 10∧-9 m
The value of speed of light is 3× 10∧8 m/s and plancks constant is 6.626 × 10∧-34 m²Kg/s
Formula:
E= hc/λ
E= energy of photon
h= plancks constant
c= speed of light
λ= wavelength of given light
Solution:
E= hc / λ
E = 6.626 × 10∧-34 m²Kg/s × 3× 10∧8 m/s / 433.9 × 10∧-9 m
E = 19.878 × 10∧-26 m²Kg/s² / 433.9 × 10∧-9 m
E = 0.04568 × 10∧ -17 J (Kg m²/s² =J)
E = 4.568 × 10∧ -19 J
Answer:
1 : 1
Explanation:
We know that the equation is balanced because the number of zinc, hydrogen, sulfur and oxygen atoms are the same in both sides of the equation.
Zn + H2SO4 → ZnSO4 + H2
We can see that there is one molecule for Zn and also one molecule for ZnSO4 (we know this because there are no numbers before the formulas, so the 1 is implied)
That is why the mole ratio of zinc to zinc sulfate is 1 : 1
Answer:
Some examples of non-living things include rocks, water, weather, climate, and natural events such as rockfalls or earthquakes
Explanation:
Many organisms do not need access to air at all
Explanation:
smoking is the main reason