Answer:
1. NO2
2.49.4%
Explanation:
1. Find the moles of each and divide by the smallest
N: 30/14=2.14/2.14=1
O: 62/16=3.875/2.14=1.81 (round to nearest whole number)
NO2
2. Find the total mass and divide by each
Total: 291.7167
There are 9 oxygens so multiply mass by 9
16*9=144
144/291.7167=0.493629607
Answers:
Most of the world’s energy comes from what three sources?
Oil, coal, and gas.
These energy sources are called <u>fossil</u> fuels and they are <u>non-renewable</u> resources.
Fuel type: oil
How it's formed: from the remains of ancient marine organisms
Its uses: transportation, industrial power, heating and lighting, lubricants, petrochemical industry, and use of by-products
Fule type: coal
How it's formed: when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial
Its uses: electricity generation, metal production, cement production, chemical production, gasification, and other industrial uses
Fuel type: gas
How it's formed: decomposed organic matter mixed with mud, silt, and sand on the seafloor
Its uses: heating & cooling buildings, cooking foods, fueling vehicles, and electricity generation
Question: What does it mean if an element is isoelectronic?
Answer: Isoelectronic is a term to describe a group of atoms or ions having the same number of electrons
Explanation: they are both the same because they bot have the same number of protons in each atom and they both will have the same always not diffrent its gonna have the same number
question answered by
(jacemorris04)