The balanced chemical reaction will be:
H2 + Cl2 = 2HCl
We are given the amount of reactants and since chlorine is in excess we can say that all of the hydrogen supplied will be in complete reaction. This will be our starting point.
0.8 g H2 (1 mol H2 / 2.02 gH2) (2 mol HCl/1mol H2) ( 36.46 g HCl/1mol HCl) = 28.88 g HCl
Thus, the answer is 28.88g H2O.
A photon is not in an atom. An electron is in the orbitals, the protons and neutrons are in the nucleus, but the photon is NOT included.<span />
<span>The energy in coal comes from energy that was
stored in giant plants that lived hundreds of millions of years ago in
swamp forests, even before the dinosaurs! When these giant plants and
ferns died, they formed layers at the bottom of the swamps. Water and dirt began to pile up on top of the dead plant remains.</span>
Answer:
E= h*frequency
6.626*10^-34)*5.71*10^14)= 3.78*10^-19 J
Answer: 7.226 x 10^22 oxygen atoms
EXPLANATION :
we know that 1 mole of anything is 6.022 x 10^23 of that thing.
The formula of Quartz is SiO2. So, 1 mole of Quartz will have 2 moles of oxygen atoms, i.e. 2 x 6.022 x 10^23 atoms of oxygen.
The molar mass of quartz is 60 g per mol. So, 60 g quartz means 1 mole quartz. We are given 3.6 g quartz,
60 g quartz means 1 mole quartz or 2 x 6.022 x 10^23 oxygen atoms.
then 3.6 g quartz will have oxygen atoms equal to (2 x 6.022 x 10^23 x3.6) / 60 = 0.7226 x 10^23 oxygen atoms or 7.226 x 10^22 oxygen atoms.