Answer:
The correct answer is in an exothermic reaction the energy of the product is less than the energy of the reactants.
Explanation:
Exothermic reaction is a type of reaction that generates heat.As a result in case of an exothermic reaction the energy of the reactant is more than the energy of the product.
That"s why the enthalpy change in an exothermic reaction is always positive .
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.
An exothermic reactions experiment and endothermic reactions experiment.
Answer:
- <em>The kinetic energy in J of an electron moving at 6.00 × 10⁻⁶ m/s is:</em>
<em> </em><u>1.64 × 10 ⁻³⁸ J</u>
<em />
Explanation:
<u>1) Data:</u>
a) KE =?
b) v = 6.00 × 10⁻⁶ m/s.
c) m = 9.11 × 10⁻²⁸ g.
<u>2) Formula:</u>
<u>3) Solution:</u>
- KE = (1/2) = (1/2) × 9.11 × 10⁻²⁸ g × ( 6.00 × 10⁻⁶ m/s)² = 163.98 × 10 ⁻⁴⁰ J
Answer:
Lungs
Explanation:
If blood pressure is almost normal in a person who has lost blood.