Answer:
A.)
Explanation:
The first structure accurately represents ethyl ethanoate because there is an ethyl group (2 carbons) directly attached to the oxygen within the parent chain and there are 2 carbons (the eth- in ethanoate) attached to the double bonded oxygen.
The second structure is not ethyl ethanoate. There is an ethyl group directly attached to the oxygen within the parent chain. However, there are 3 carbons attached to the double bonded oxygen. This makes the structure ethyl propanoate.
Answer:
Heat reaction
Explanation:
Heat must be applied in order to melt a substance.
Answer:

Explanation:
Hello,
In this case, it is convenient to compute the car's mileage in km/L as follows:

In such a way, since the distance is measured to be 250 km, the volume requirement is:

Regards.
Joseph Proust is the scientist who provided a foundation for John Dalton's work on the atomic structure.
Answer: handpicking method
2. Difference in size.
Explanation: The method in which substances in a mixture can be separated by just picking them with the help of hand from the mixture is known as handpicking method.
It is one of the methods which can be carried out for mixture of dry substances.
As the size of cereal bits and marshmallows is significantly different, he can handpick the larger chunks of marshmallows and separate them from the smaller sized cereal bits.