Answer:
When mechanical waves strike a barrier, at least part of the energy of the waves will be reflected back into the media from which they came.
Explanation:
Since the ethanol has a density of 0.800 g/mL, the mass of the ethanol is 180 grams.
<u>Given the following data:</u>
- Volume of ethanol = 225 mL
- Density of lead ball = 0.800 g/mL.
To find the mass of the ethanol;
Density can be defined as mass all over the volume of an object.
Mathematically, the density of a substance is given by the formula;
Making mass the subject of formula, we have;
Substituting the given parameters into the formula, we have;
<em>Mass of ethanol </em><em>=</em><em> 180 grams.</em>
Read more: brainly.com/question/18320053
Answer:
D
Explanation:
In the grassland pretty warm so the heavy fur coat wouldn't help, there is no snow in the grassland so the big feet for walking on snow also wouldn't help, its the grassland where trees are more scarce so not A, but there is a lot of grass and dust so being able to blend in would help.
Answer:
jeg;djb;dfjbejfnvjkndjv
Explanation:
i can not read it clearly
Answer:
Starting alcohol; unsuccessful
Explanation:
You don't give the IR spectrum of your compound. Does it resemble the one below?
If so, you have not obtained the desired ester. The spectrum shows a broad peak at 3300 cm⁻¹ and lacks a characteristic strong, sharp ester carbonyl absorption at 1740 cm⁻¹.
A carboxylic acid would a carbonyl peak at 1710 cm⁻¹.
Alcohols generally have a strong, broad O-H stretching peak around 3300 cm⁻¹ and a strong C-O peak on the high side of 1000 cm⁻¹.
It looks like the substance is your starting alcohol and that your synthesis was not successful.