Answer:
Proton and neutron
Explanation:
Electrons orbit round the nucleus as the planet revolve round the sun
Answer:
you did not give the specific heat like formula like it takes 1kj to raise 28grams of water by 10 grams
It'd be a physical change. This is because it's a change in the state of matter and not altering the chemical structure of water
Empirical formula of caffeine is C₈H₁₀N₄O₂.
In 1 mol of caffeine we have 10 mol of hydrogen.
In 2,8 mol of caffeine we have x mol of hydrogen.
x = 2,8 mol * 10 mol / 1 mol = 28 mol
ANSWER: There are 28 mol of hydrogen.
:-) ;-)
