C)4CO2(g) +2H2O(g)
<span>is the choice which shows complete combustion</span>
Based on the ideal gas relation:
PV = nRT
where P = pressure ; V = volume ; T = temperature
n = number of moles; R = gas constant = 0.0821 L atm/mol-K
Step 1: Find the number of moles of O2
n = PV/RT = 1 * 3.90/0.0821*273 = 0.1740 moles
Step 2: Calculate the molecules of O2
Now, 1 mole of O2 corresponds to 6.023 * 10²³ molecules of O2
Therefore, 0.1740 moles of O2 corresponds to-
0.1740 moles of O2 * 6.023*10²³ molecules of O2/1 mole of O2
= 1.048 * 10²³ molecules of O2
Answer:
Atomic number
Protons
Explanation:
Elements generally have specific atomic number of protons they are made up of.
An element is a distinct substance that cannot be split-up into simpler substances. Such substance are made up of only one kind of atom.
- Each element has a unique atomic number
- The atomic number is used to differentiate between an element or the other.
- The atomic number is the number of protons in an atom.
Answer:Good
Explanation:can't complain.