I’m sorry but where’s the worksheet lol......
Answer:
4. H-3 and He-4
Explanation:
H-3 means hydrogen with a mass number of 3. Mass number is the addition of protons and neutrons in the nucleus. Hydrogen always has 1 proton because it has atomic number 1, therefore the number of neutrons is found by subtracting 1 from the mass number (3).
3-1= 2 neutrons
He-4 also has 2 neutrons. He-4 has mass number 4, which means that its protons and neutrons added together equals 4. Helium has 2 protons because it has atomic number 2.
Therefore 2 + neutrons =4
neutrons =4-2
neutrons =2
Answer: 6.5 moles of oxygen per mole of fuel
Explanation:
Since the air consists of 21% oxygen, 79% nitrogen on a molar basis,
equation for the reaction is given as
C4H10 + 02--4CO2+ 5H20
Will now be
C4H10 + a(02 +3.76N2)--4CO2+ 5H20 + 3.76aN2
0.79 / 0.21 = 3.76 = N2/O2 mole ratio ie for every mole of oxygen, we have 3.76moles of nitrogen. Note that nitrogen is an inert gas and will not take place in reaction.
Balancing oxygen on both sides,
ax 2= 4x2 + 5x1
2a=8+5
a=13/2= 6.5 moles of oxygen per mole of fuel
For 110% of theoretical air
Mole of 0₂calculated = 6.5
=1.1x6.5=7.15
= C₄H₁₀ + 7.15{02+ 3.76N₂}->
4CO₂+ 5H₂0 + 3.76X7.15N₂
= C₄H₁₀ + 7.15{02+ 3.76N₂}->
4CO₂+ 5H₂0 + 26.884N₂
Chloroplast- Kitchen because food (photosynthesis) is made there
Mitochondria- Energy box because it powers the building
