Answer:
There is the same amount of matter before and after the reaction
The atoms are arranged in different compounds and molecules.
There are the same types and number of atoms before and after the reaction
Explanation:
--The same amount of matter before and after the reaction and the same types and number of atoms before and after the reaction is because of the law of conservation of mass. Matter cannot be created or destroyed.
--the reacting atoms and molecules will undergo a transformation to different molecules and compounds. Can be predicted because of the types of chemical reactions:
combination (combining 2 elements to create a new compound)
Decomposition (a compound breaking down into different parts)
Single and Double displacement (the molecules/ atoms will change who they are paired with)
<h3>Answer:</h3>
Excess Reagent = NBr₃
<h3>Solution:</h3>
The Balance Chemical Equation for the reaction of NBr₃ and NaOH is as follow,
2 NBr₃ + 3 NaOH → N₂ + 3 NaBr + 3 HBrO
Calculating the Limiting Reagent,
According to Balance equation,
2 moles NBr₃ reacts with = 3 moles of NaOH
So,
40 moles of NBr₃ will react with = X moles of NaOH
Solving for X,
X = (40 mol × 3 mol) ÷ 2 mol
X = 60 mol of NaOH
It means 40 moles of NBr₃ requires 60 moles of NaOH, while we are provided with 48 moles of NaOH which is Limited. Therefore, NaOH is the limiting reagent and will control the yield of products. And NBr₃ is in excess as some of it is left due to complete consumption of NaOH.
Answer:
chemical or physical i dont know for sure i kniw i have learned this juat cant rember
