First you figure out how many grams of sulfur has been used.
2.080g - 1.659g = 0.421g of S used
Now change all of your grams to mols.
1.659g of Cu / 63.546g/mol = 0.02611mol of Cu
0.421g of S / 32.065g/mol = 0.01313 mol of S
From this you can see that S has less so we divide both numbers by the number of moles of S so we can get a ratio of S to Cu.
0.01313/0.01313 = 1 for S
0.02611/0.01313 = 2 for Cu
So the empirical formula would be Cu2S or copper sulfide.
I thin kthe answer could be : Begins with the producer, is recycled by Decomposers, and Is transferred from one organism to another through Feeding. I'm not 100% sure, but I think these are the answers! Hope this helps! :)
blood
Explanation:
it is the liquid part of blood used to flow through the human body
Answer: option B - 2 K + MgBr2 = 2 KBr + Mg
Explanation:
2K + MgBr2 --> 2 KBr + Mg
On Left side: 2moles of Potassium (K) reacts with 1 mole of MgBr2
On Right side: 2 moles of KBr and 1 mole of Mg.
You will observe that the coefficient of each element on left side and Right side is balanced in option B, unlike other options.
So, option B is the answer.