0
Balanced equation is:
Zn(s) + I2(s) --> ZnI2(s)
Pick any initial mass of Zn and I2, and convert those masses to moles:
100 g Zn / 63.4 g/mol = 1.58 moles
100 g I2 / 253.8 g/mol = 0.394 mol I2
Since these two react in a 1:1 ratio, you will have used 0.394 moles of Zn to react with the 0.394 moles of I2. That would leave 1.58 - 0.394 = 1.186 moles of Zn unreacted.
So, the fraction of the original zinc remaining would be 1.186 / 1.58 = .75
by sonu gupta
What else can I help you with?
How does incomplete conversion of the carbonate affect mass?
Incomplete conversion of carbonate means not all the carbonate has reacted to form products. This can lead to a lower final mass compared to the theoretical yield, as some of the original carbonate remains unreacted and is not accounted for in the final product mass.
What is CH3CHOHCH2CH3 after oxidation?
CH3CHOHCH2CH3 undergoes oxidation to form CH3COCH2CH3 (acetone). The alcohol group in the original molecule is converted into a ketone group during oxidation.
When do you use back titrations?
Back titrations are used when the analyte's reaction with the titrant is slow or incomplete, making direct titration impractical. By reacting the excess titrant with a known amount of a third reagent, then titrating the unreacted excess, the original analyte concentration can be calculated. This method is particularly useful for acidic or basic reactions that may not go to completion.
Why an excess of copper oxide is added to s?
An excess of copper oxide is added to ensure that all the sulfur present in the original sample reacts to form copper sulfide. This is important for accurate determination of sulfur content in the sample, as any unreacted sulfur would lead to an underestimate of sulfur content. The excess copper oxide also helps to ensure complete combustion of the sample.
Are compounds reversible?
Compounds can undergo reversible reactions where they can be converted back to their original form. This often depends on the conditions of the reaction, such as temperature and pressure. However, not all compounds exhibit reversible behavior.
What happen to the original magnesium after it has been burned?
If completely burnt (in excess of oxygen), all the magnesium will be converted to magnesium oxide.
Can you convert a whole number to a fraction?
Yes, for example 6 could be converted to the fraction 6/1 The posh word for this is a reciprocal. Basically meaning 1 under something. . Simply put a 1 under any original number to create a fraction.
How do you change a fraction into a mixed decimal?
The question is regarded as, "How do you change a fraction into a mixed number ?An improper fraction (where the numerator is greater than the denominator) can be converted to a mixed number by finding the whole number quotient and then expressing the remainder as the numerator of a new fraction using the original denominator. If possible, either the original fraction or the remainder fraction should be simplified.EXAMPLE : 152/17 = 816/17EXAMPLE : 46/4 = 112/4 ....this can be simplified to 111/2
How is dividing mixed numbers the same as dividing fractions?
A mixed number can be converted into an improper fraction. Mixed numbers as improper fractions can be divided just like any other fraction. To convert a mixed number to an improper fraction multiply the whole number by the denominator and add the original numerator to give the new numerator and put this over the original denominator.
Converted into a fossilized form so that the original appearance was preserved?
Converted into a fossilized form so that the original appearance was preserved
If the numerator of a fraction is increased by 150 and the denominator of the fraction is increased by 300 the resultant fraction is 518. What is original fraction?
The original fraction is -145/(-282) or it could be 850/35700 or one of infinitely many possibilities.
What happens to the quotient when you divide a fraction by a fraction?
The quotient is larger than the original fraction.
How do you make a remainder into a fraction?
The fraction is the remainder divided by the original divisor.
How do we add rational expressions when the denominators are not the same?
Find a common denominator, which can always be accomplished by multiplying the two denominators together. Then convert each original fraction to the new denominator by multiplying both numerator and denominator by a number that will make the denominator of each fraction the same, then add the converted numerators and express the sum as a new fraction with the sum of the converted numerators divided by the common denominator. For example, a/b + c/d = (da + bc)/bd.
How do you convert a Word document into a video?
A Word document cannot be converted into a video. They are completely different kinds of things. You can video a Word document and then use that video to show your document, but the Word document has not been converted into a video. To do anything with the document itself you would have to back to the original.
What part of a fraction that represents the total?
It is the denominator of the original fraction. If the fraction has been simplified you have no way to get back to the total.
The numerator of a fraction is one less than it's denominator and if both are increased by four the new fraction would be 18 more than the original fraction what was the original fraction?
its 1 over 3 its 1 over 3
