I believe it would be D. Electromagnet. It's been a while since I've done this stuff, tho. Hope this helps!!!! :)
Answer:
ggghy I am a great and the other hand the wildcats their own is the name of the
A catalyst will speed up the activation energy and therefore speed up the reaction. The products will form fast because of this.
I think it's D, because theoretical yield is like, the yield you'd get if 100% of the reactants formed to make product. Well that's how I think of it, but it has something to do with limiting reagents and stuff. Sorry this isn't a really detailed explanation.
