No. The mass is released into the air.
Question 5 is the second one.
Well the first thing you need to know is how much energy that 1g methanol release which is fixed value
Methanol CHOH is 17000 j/g
so the energy released when 10.0g of methanol is burned
=10x 17000
=170000 j
Mole number of 75 g is 0.4 mol. NO2 is 0.8 mol and is 36.8 g.
Answer:
Oxygen has 8 neutrons
Explanation:
We know that cause the atomic number says how many protons does the element has, so in this case is eight, and in the mass number, we have the number of protons+neutrons, in this case is 16. Then, as we know that oxygen has eight protons with the atomic number, we would do 16-8 protons= 8 neutrons.
Check: Atomic number is 16= 8 protons + 8 neutrons
