Answer:
ATOMIC MASS = Protons + Neutrons
34+43 = 77
Atomic Mass is 77
BRAINLIEST PLEASE
Putting glue on something, because once it is set in you cannot change it back.
Work is done when a force is applied to an object through a distance. ... The object will either speed up or slow down, resulting in a change in its kinetic energy (seen in Figure 1), or it will have an altered potential energy if, for example, it was lifted a certain height under the force of gravity.Jan 31, 2020
Answer:
is considered as the limiting reagent for this reaction.
Explanation:
Limiting reagent is the reagent which limits the formation of the product.
Excess reagent is the reagent which is present in excess in a chemical reaction.
For the combustion of acetylene, the reaction follows:

By Stoichiometry,
5 moles of oxygen gas reacts with 2 moles of acetylene.
So, 81 moles of oxygen gas will react with =
= 32.4 moles of acetylene.
As, the required amount of acetylene is less than the given amount. So, it is considered as an excess reagent and oxygen gas is the limiting reagent.