Answer:
20 molecules of oxygen gas remains after the reaction.
Explanation:
Molecules of ethyne = 52
Molecules of oxygen gas = 150
According to reaction, 2 molecules of ethyne reacts with 5 molecules of oxygen gas.
Then 52 molecules of ethyne will react with:
of oxygen gas.
As we can see that we have 150 molecules of oxygen gas, but 52 molecules of ethyne will react with 130 molecules of oxygen gas. So, this means that ethyne is a limiting reagent and oxygen gas is an excessive reagent.
Remaining molecules of recessive reagent = 150 - 130 = 20
20 molecules of oxygen gas remains after the reaction.
The periodic table of elements is divided into eight groups, excluding the transition metals. The elements in these groups are placed in their respective positions due to the number of valence electrons they have. The valence electrons of an atom are the electrons in the outermost shell of the atom. Thus, the atoms of the elements in group 1 have 1 valence electron, those in group 2 have 2 valence electrons and so on. So an element in group 6 will have 6 valence electrons, which is more than that of an element from group 2. Therefore, the answer is D. fewer valence electrons<span>. </span>
As the temperature of the system increases, the energy of the system also increases, speeding the system up.
I'm not sure. It is rare for BH3 to be in this form.
