Welcome to Westonci.ca, your one-stop destination for finding answers to all your questions. Join our expert community now! Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.
Sagot :
Answer
The percent of A by mass for substance AB is 75%
Step-by-step explanation:
[tex]\begin{gathered} Prosut\text{ states }the\text{ Comparative law that compounds }are\text{ formed from }elements\text{ }with\text{ the same }mass\text{ comparison, } \\ so\text{ that compounds have a fixed }composition\text{ of }elements. \\ _{} \\ \text{ From substance AB}_2\text{ }is\text{ 60\% by mass of A} \\ \text{ Assume }thatAB_{2\text{ }}\text{ = 100 grams} \\ \text{ A + B = AB}_2 \\ A\text{ + B = 100} \\ A\text{ = 60 grams} \\ B\text{ = 100 - A} \\ B\text{ =100 - 60} \\ B\text{ = 40 grams} \\ \text{ The coefficient of AB}_2\text{ = 2} \\ Then,\text{ B = 40/2 = 20 grams} \\ In\text{ compound AB} \\ AB\text{ = A + B} \\ AB\text{ = 60 + 20} \\ AB\text{ = 80 grams} \\ \text{The percentage of A in AB is (60:80)} \\ \text{ \%A = }\frac{60}{80}\text{ x 100\%} \\ \text{ \%A = 75\%} \end{gathered}[/tex]
We appreciate your visit. Hopefully, the answers you found were beneficial. Don't hesitate to come back for more information. We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.
