+118653 Ariel:Ok so i forget how to do these problems,so can you show me by just doing this 1 problem plz! My science exam is tomorrow and im scared that im going to fail,plus on top of that i have a social studies exam on Wednesday:
[size=150]Lactose is a sugar that is found in milk. What is the percent by mass of a solution made by dissolving 71g of lactose in 729g of water? [/size]
Melody:Ariel:Ok so i forget how to do these problems,so can you show me by just doing this 1 problem plz! My science exam is tomorrow and im scared that im going to fail,plus on top of that i have a social studies exam on Wednesday:
[size=150]Lactose is a sugar that is found in milk. What is the percent by mass of a solution made by dissolving 71g of lactose in 729g of water? [/size]
Okay Ariel,
The fraction of lactose will be weight of lactose divided by the Total weight of the solution
If you want to change that fraction to a percentage you multiply by 100 and put a percent sign.
Now I am going to really annoy you by asking,
What is the answer?
