Recent content by extraordinarygirl

Which group in the periodic table will most likely form anions with salts that are usually soluble? Which group in the periodic table will most likely form cations with salts from the periodic table? I am thinking that the anions would be the alkali metals (group 1) but I don't know what the...

We did a lab using cation solutions, and they were prepared using compounds that contain the nitrate ion. (ex. Ca 2+ was prepared by dissolving Ca(NO3)2 in water. Why did they used nitrates to make these solutions? Would it be because nitrates always form soluble solutions, so it would not...

Can anyone give me an idea?:confused:

You have a piece of Mg of an unknown mass, and a beaker of water in which is dissolved an unknown amount of HCl. Design an experiment to determine which reactant is the limiting reactant. I'm not too sure how to get started with this problem. I was thinking you could place the magnesium into...

I am not understanding how I am supposed to covert the weight of sulfur in the compound if I don't know what the compound is. Is is Antimony + Sulfur? And if it is, how am I supposed to know what the charge of Antimony is?

[FONT="Comic Sans MS"] When 2.435g of Antinomy is heated with excess sulfur, a chemical reaction occurs. The excess sulfur is driven off, leaving only the compound. If 3.397g of the compound are prduced, what is the empricial formula of the compound? :frown: I am not even sure where to begin...

Alright, so that would be 31536000 heart beats per year. And then I would just put it into a proportion. 1 mol - 6.02 x 10 ^23 x - 31536000 and cross multiply! Thanks, I guess that was an easier question than I was making it out to be!

A typical adult human heart beats an average of 60 times per minute. If you were allotted a mole of heartbeats, how long in years could you expect to live? You may assume each year has 365 days. I know that I need to use the Avagadro's number ... 6.02 x 10^23, but I am not sure how to...

Hey, I'm working on the theories for how the pyramids in Egypt were built and I just wanted to know if you guys had any other points to add to what I have written. The first theory is that Aliens built them because they were so precise. The raitio of height to length equaled pi. They pointed...

Yes, BaSO4 is insoluble which means it is a precipitate

What would the white precipitate be? Beacuse I have to write it out in a formula.

Thank you so much

If I have a solution filed with silver ions. (Ag, dissolves in water) What would I do to be able to recover the silver metal?

Can someone please help me I have a test on this tomorrow!

I am having trouble with double displacement reactions. I know for some of them, no reactions will occur because the metal isn't strong enough to displace the other metal . I was wondering if any of you could clear this up. Do I see if the first metal can displace the second metal, or do i see...