There are 2.5 oxygen for every phosphorus atom.
Answer:
B) coefficient: subscript
Explanation:
Given
Required
What does 3 and 2 represents
On a general term:
In
And
So, by comparing with the general term,
Hence,
3 = coefficient and 2 = subscript
Answer:
- <em>Coal combustion</em> is burning coal to produce electricity, but it releases a lot of pollutants to the atmosphere.
Explanation:
<em>Coal combustion</em> is the process of burning coal to produce energy: the combustion releases heat which is used to heat water, producing steam which is used to move turbines and produce electricity.
The chemical equation for the combustion of pure coal is:
That is called complete combustion.
Incomplete combustion also happens:
CO₂ is a greenhouse gas, thus it is a pollutants.
Also, mined coal contain a lot of other elements, like sulfur (S), nitrogen (N), organic compounds, and heavy metals, which implies many side reactions. So, the combustion of coal releases a lot of pollutants to the atmosphere, which is why this is considered a dirty process.
Answer:
1. Sexual reproduction always requires two parents.
3. Asexual reproduction requires only one parent.
Explanation:
Volatility is the property of a liquid to change phase to gas. As you know, the molecular arrangement of liquids and gases differ in the inter-spaces. The molecules of the gas is more widely distributed so they have less intermolecular forces. Therefore, a liquid with high volatility has very low intermolecular forces. This means that they could be easily separated from each other to conform to the molecular arrangement of a gas.
The parameter that is well associated with volatility is vapor pressure. Think of it this way, when the vapor pressure equals the atmospheric pressure, the liquid boils and changes phase into gas. So, we can say that a liquid with high volatility exhibits high vapor pressure. In this case, it would only take less energy for the vapor pressure to reach the much higher atmospheric pressure.