<span>The answer is letter B. Melting is an endothermic change, because ice absorbs energy from its surroundings as it melts. The melting process absorbs heat energy that causes the ice to melt. Endothermic change is when it absorbs energy from its surrounding. The other choices are incorrect because exothermic change releases energy to its surrounding.</span>
It's a weak base bacause H C N is weak
It is the smallest unit of matter
try answer multiple choice A: consider the effects of their actions on the environment
Answer:
1.301 × 10⁻¹² m
Explanation:
Step 1: Given and required data
- Energy of the electromagnetic wave (E): 1.528 × 10⁻¹³ J
- Planck's constant (h): 6.626 × 10⁻³⁴ J . s
- Speed of light (c): 3.00 × 10⁸ m/s
Step 2: Calculate the wavelength (λ) of the electromagnetic wave
We can calculate the wavelength of the electromagnetic wave using the Planck-Einstein's relation.
E = h × c / λ
λ = h × c / E
λ = (6.626 × 10⁻³⁴ J . s) × (3.00 × 10⁸ m/s) / 1.528 × 10⁻¹³ J
λ = 1.301 × 10⁻¹² m
