How many liters of nh3, at stp, will react with 19.5 g o2 to form no and h2o?

10.9 L

Explanation:

Let's begin by introducing the strategy to solve this problem:

(a) The first step is already fulfilled: the reaction is balanced and it shows that 4 moles of ammonia react with 5 moles of oxygen.

(b) Given the following variables:

(c) Find moles of oxygen dividing mass of oxygen by its molar mass:

Here molar mass of oxygen is:

(d) From stoichiometry, dividing moles of ammonia by its stoichiometric coefficient would be equal to the ratio of moles of oxygen divided by its stoichiometric coefficient:

Rearrange the equation to obtain moles of ammonia:

(e) Solve pV = nRT for volume of ammonia:

Substitute the given data to obtain the final answer!

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

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!

if you need further assistance, let me know: )

~ trueboss72