4nh3 + 5o2 → 4no + 6h2o mm nh3 = 17.04 g/mol; mm o2 = 32 g/mol; mm no = 30.01 g/mol; mm h2o = 18.02 g/mol how many moles are in 35 g of no? 4.8 mol 1.2 mol 1100 mol 0.85 mol

1.2 mol.

Explanation:

n = mass / molar mass

n is the number of moles.

m is the mass in g (m of NO = 35.0 g)

Molar mass NO = 30.01 g/mol.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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