0
why don't reactions give us a 100 percent yield?
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Why is percentage yield not 100 percent?
If you invest 25 dollars, and a year later they give you back $25.50, what did that investment yield ?Don't count the $25 you put in. That was yours all the time, and just having it returned is no big deal.The investment yielded 50¢ . That's 2 percent of the $25 that you put in, so the investment yielded 2% for the year.
How much percent do you need to get in your final exam which is worth 65 percent if you received 100 percent for an assignment worth 10 percent and 75 percent for an assignment worth 25 percent?
Since there is no overall target given, it is not possible to answer the question precisely. However, x% in the final exam will give an overall percentage of 0.65*x + 28.75 percent.
What is the same as 30 percent a what percent to give 100 percent?
30% = 0.3
Can 10 percent acidity vinegar be converted to 5 percent?
If you have vinegar with less acidity than 5 percent, then yes. For instance, if you somehow had 0 percent vinegar, mixing the two half-and-half would give you 5 percent. If you have 2.5 percent, mixing 1 part 2.5 percent with 2 parts 10 percent will give you 5 percent.
What is 76 percent of 25?
76 is 304% of 25. 25 times 3.04 will give you 76.
What is the percent yield of the decomposition reaction if 9.9 grams Pb(NO3) are heated to give an actual yield of 5.5 grams of PbO?
The yield is 82,45 %.
Formula for percent yield in chemistry?
Percentage yield is worked out as (amount you got/ amount you could have got) x 100 You should do the calculation in moles so weigh your compound, work out its molar mass and divide the mass by the molar mass to get number of moles. Then you have to work out your maximum theoretical yield - work out how many moles of reactant you started with and check the stoichiometric ratio from your balanced equation to find how many moles you expected to get. In organic reactions a yield of 60% or so is normal. The more steps you went through in your preparation, the lower you would expect your yield to be. Many reactions just do give a low yield anyway, because they are at equilibrium rather than going to completion, like the Haber process.
Does Vitamin C Give You Energy?
Vitamins are not used as energy sources, they are not oxidized. They take part in many reactions that yield energy tough (like the B group)
Can you give a sentence using yield?
cows yield milk
Give a five letter word for give in?
Yield.
What is a riddle for yield?
Why did the deli give way to the street sign? Y + deli = yield.
What rhymes with sealed that has ie in it and means to give away?
The word "yield" rhymes with "sealed," has ie in it, and means to give away or produce.
If you have two numbers the same how do you calculate the yield?
if you speak of %yield meaning experimential yield over theorietical yield then divide the 2 numbers and multiply by 100 give you the ans
Why is percentage yield not 100 percent?
If you invest 25 dollars, and a year later they give you back $25.50, what did that investment yield ?Don't count the $25 you put in. That was yours all the time, and just having it returned is no big deal.The investment yielded 50¢ . That's 2 percent of the $25 that you put in, so the investment yielded 2% for the year.
What information does the yield if a recipe give?
In recipes, the word yield is the number of servings which the recipe will produce.In other words, how many people the given recipe measurements in the recipe will serve.
How do you improve percent yield?
Be a lot more careful in measuring and transferring things back and forth. Also, do not rush any experiment. Bad percent yield is caused by errors that can easily be made by, dripping here, dropping there and it usually happens because we are not careful. Give an experiment time to work. Let things set, settle, and react to their fullest amount.
What is meant by yield?
Yield means to give way. It can also mean that the land yields wheat and barley.
