Answer: Transition from X to Y will have greater energy difference.
Explanation: For studying the energy difference, we require Planck's equation.
where, h = Planck's Constant
c = Speed of light
E = Energy
= Wavelength of particle
From the equation, it is visible that the energy and wavelength follow inverse relation which means that with low wavelength value, energy will be the highest and vice-versa.
As electron A falls from X-energy level to Y-energy level, it releases blue light which has low wavelength value (around 470 nm) which means that it has high energy.
Similarly, Electron B releases red light when it falls from Y-energy level to Z-energy level, which has high wavelength value (around 700 nm), giving it a low energy value.
Energy Difference between X-energy level and Y-energy level will be more.
Answer:
The energy consumed by animals in the form of glucose is conserved because it is transformed into chemical energy as carbon dioxide is produced during respiration.
Explanation:
There's no diagram....but I kinda figured it from the description.
Answer:
The statement is TRUE.
Explanation:
In endothermic reactions, heat is absorbed (imagine that heat would be a reactive in the reaction). The enthalpy (H) of the products is greater than that of the reagents and the deltaH is positive. An example of this reaction is the decomposition of H20:
2H20 -> 2H2 + 02
Answer:
0.542M HCl
Explanation:
The reaction of H₂SO₄ with NaOH is:
H₂SO₄ + 2 NaOH → 2H₂O + Na₂SO₄
<em>Where 1 mole of acid reacts with 2 moles of NaOH</em>
Moles of H₂SO₄ are:
0.0500L × (0.361mol / L) = 0.01805 moles H₂SO₄
Thus, moles of NaOH that neutralize this acid are:
0.01805 moles H₂SO₄ × (2 mol NaOH / 1 mol H₂SO₄) = 0.0361 moles NaOH
And concentration is:
0.0361 moles NaOH / 0.0200L = <em>1.805M</em>
And, reaction of NaOH with HCl is:
NaOH + HCl → H₂O + NaCl
<em>Where 1 mole of NaOH reacts per mole of NaOH</em>
As you use 30.0mL = 0.0300L of NaOH to neutralize the HCl acid, moles of acid are:
0.0300L × (1.805mol / L) = 0.05415 moles NaOH = moles HCl
In 0.1000L:
0.05415 moles HCl / 0.1000L = <em>0.542M HCl</em>