1) since we are given percentages, we can assume we have 100 grams of the molecule.
55.6 % Cu ----> 55.6 grams Cu
16.4 % Fe------> 16.4 grams Fe
28.0% S--------> 28.0 grams S
2) convert each gram to moles using the molar masses given
3) we divide the smallest value of moles (0.293) to each one.
Cu --> 0.876 / 0.293= 3
Fe---> 0.293 / 0.293= 1
S-----> 0.875 / 0.293= 3
4) let's write the empirical formula
Cu₃FeS₃
Answer:
See explanation for accurate matching
Explanation:
The mass of a salt in grams that will dissolve in 100 mL of water.--- solubility
A solution that has dissolved the maximum amount of a compound at a given temperature.---- saturated solution
Any further addition of salt will remain undissolved-----supersaturated solution
The maximum number of moles of a salt that will dissolve in 1 L of solution----molarity
A decrease in the solubility of an ionic compound as a result of the addition of a common ion..... Common ion effect
The product of the molarities of the dissolved ions, raised to a power equal to the ion's coefficient in the balanced chemical equation........solubility product.
You just need to know the amount of valance electrons in each element or you can search up “How to do lewis diagrams.”
Question: The question is not complete. Find below the complete question and the answer.
Alab group was supposed to make 14 mL of a 36% acid solution by mixing a 20% solution, a 26% solution, and a 42% solution. However, the 20% solution was mislabeled, and was actually a 10% solution, so the lab group ended up with 14 mL of a 34% acid solution, instead. If the augmented matrix that represents the system of equations is given below, what are the volumes of the solutions that should have been mixed? mL
Volume of 20% solution= ?
Volume of 26% solution = ?
Volume of 42% solution= ? Round to the nearest whole number ml
Answer:
Volume of 20% solution= 3 mL
Volume of 26% solution = 1 mL
Volume of 42% solution= 10 mL
Explanation:
Find attached of the calculations.
