A) K and Br
Ionic compounds are compounds in which mostly a metal and non-metal bond. Potassium (K) is a metal and Bromine (Br) is a non-metal.
Answer:
(i) specific heat
(ii) latent heat of vaporization
(iii) latent heat of fusion
Explanation:
i. Q = mcΔT; identify c.
Here, Q is heat, m is the mass, c is the specific heat and ΔT is the change in temperature.
The amount of heat required to raise the temperature of substance of mass 1 kg by 1 degree C is known as the specific heat.
ii. Q = mLvapor; identify Lvapor
Here, Q is the heat, m is the mass and L is the latent heat of vaporization.
The amount of heat required to convert the 1 kg liquid into 1 kg vapor at constant temperature.
iii. Q = mLfusion; identify Lfusion
Here, Q is the heat, m is the mass and L is the latent heat of fusion.
Here, Q is the heat, m is the mass and L is the latent heat of vaporization.
The amount of heat required to convert the 1 kg solid into 1 kg liquid at constant temperature.
The structural formula of a chemical compound is a <u>graphic representation of the molecular structure</u>, which shows how atoms are arranged or spatially distributed. The chemical bonds within the molecule are shown, either explicitly or implicitly.
The cis / trans isomers are compounds that<u> differ in the spatial arrangement of their groups</u>. Particularly, the<u> cis isomers are geometric isomers that have the groups on the same side while the trans isomers are those that have them on opposite sides.
</u>
On the other hand, structural isomers are molecules with the<u> same molecular formula but different structure</u>.
The possible structural isomers of n-hexene that can be formed by moving the position of the double bond are shown in the picture attached, considering only the cis isomers.
Answer:
The coefficient of oxygen in this balanced reaction is 5 ( option B)
Explanation:
Propane = C3H8
The process of combustion = adding oxygen (O2)
In this process propane will be consumed and CO2 and H2O will be produced.
C3H8 + O2 → CO2 + H2O
First we'll balance on both sides all H-atoms: left we have 8x H and on the right side we have 2x H so we have to multiply the right side ( H2O) by 4.
This gives us:
C3H8 + O2 → CO2 + 4H2O
Now we have on both side 8x H
On the left side we have 3x C, and 1x C on the right side. So we have to multiply CO2 on the right side by 3
This gives us: C3H8 + O2 → 3 CO2 + 4 H2O
On the left side we have 2x O but on the right side we have 10x O
We have to multiply O2 on the left side by 5, to equal this.
So finally, we'll have: C3H8 + 5 O2 → 3 CO2 + 4 H2O
We can see that the coefficient of oxygen in this balanced reaction is 5 ( option B)
In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.
The law of conservation of energy states that energy can neither be created nor be destroyed, but it can be transformed from one form to another. So I considered an example of it as follows: water is stored at height with potential energy, the water flows and its potential energy is converted into kinetic energy.
