Which substance can be broken down by chemical means
2 answers:
Answer: Option (1) is the correct answer.
Explanation:
A compound is defined as the substance in which different elements are chemically combine together in a fixed ratio by mass.
For example, chemical formula of ammonia is .
Here, in the atoms are present in 1:3 ratio.
A compound can be divided into its constituent or simpler substances by chemical means.
On the other hand, an element is defined as a substance which contains atoms of only one type.
For example, Al, Sb, Ar etc are all elements.
An element can never be divided into its constituent parts.
Thus, we can conclude that out of the given options ammonia is the substance which can be broken down by chemical means.
You might be interested in
<u>Answer:</u> The final temperature of the mixture is 51.49°C
<u>Explanation:</u>
When two samples of water are mixed, the heat released by the water at high temperature will be equal to the amount of heat absorbed by water at low temperature
The equation used to calculate heat released or absorbed follows:
......(1)
where,
q = heat absorbed or released
= mass of water at high temperature = 140 g (Density of water = 1.00 g/mL)
= mass of water at low temperature = 230 g
= final temperature = ?°C
= initial temperature of water at high temperature = 95.00°C
= initial temperature of water at low temperature = 25.00°C
c = specific heat of water= 4.186 J/g°C
Putting values in equation 1, we get:
Hence, the final temperature of the mixture is 51.49°C