Chemistry Help Topic

[Hero of Trains]

Bachelor's in science.

[mayastarr041]

[Hero of Trains]

What's that face(s) for?

[mayastarr041]

I made a total fool of myself by replying that. I would've never realized it was Bachelor's for Science.

[mayastarr041]

So one of the problems was: A piece of sulfur weighs 227 g. When it was submerged in a graduated cylinder containing 50 mL of H20, the level rose to 150 mL. What is the density (g/mL) of the sulfur?

And the density formula is: mass/volume.
It says the sulfur weighs 227 g, so I'm guessing mass is the weight. So 227 divided by it's either 50 mL or 150 mL. I'm guessing the volume is the rising up, 150 mL, so I tried to do the math and I got 1 remainder 77. So the answer is 1.77?

[Hero of Trains]

Actually, it's volume would be the difference between 150 and 50, so 100 mL. And then you do what you did, and divide it.

[mayastarr041]

Actually, it's volume would be the difference between 150 and 50, so 100 mL. And then you do what you did, and divide it.

Volume: the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.
Shouldn't it be 50 mL because that's how much it occupied?

[Hero of Trains]

No, there was 50 mL before. It rose up to 150, so there must have been 100 added. The only thing you added was the sulfur.

[FireArrow]

Gotcha, so I'd call it an ionic bond if let's say Hydrogen donated an electron to....Bromine? It's simple like that? Or maybe Oxygen steals it from Hydrogen and that's Ionic Bonding?

Ionic bonding is only between a metal and nonmetal, which generally forms salts. If it's between a very electronegative nonmetal (wants electrons) paired with a significantly less electronegative nonmetal (doesn't want them that badly) then it's called high ionic character, or a covalent bond that acts like an ionic bond.

[blueflower999]

Fire, Hydrogen can Ionically bond I believe. Other than that you're right.

More to come when I get home.

[mayastarr041]

Oh I see. So you take what you added, which is 100, then it gets divided by 227?
Thank you!

[Hero of Trains]

No, the other way around, 227/100. Because the formula is mass/volume.

[FireArrow]

Fire, Hydrogen can Ionically bond I believe. Other than that you're right.

More to come when I get home.

Huh, wasn't it recently discovered that hydrogen can become a metal under certain conditions as well?

[mayastarr041]

No, the other way around, 227/100. Because the formula is mass/volume.

Ohh, I see thank you Trains!
Just learned something new! Feeling very proud!

[mayastarr041]

Ionic bonding is only between a metal and nonmetal, which generally forms salts. If it's between a very electronegative nonmetal (wants electrons) paired with a significantly less electronegative nonmetal (doesn't want them that badly) then it's called high ionic character, or a covalent bond that acts like an ionic bond.

Thanks fire, but the ionic/covalent is way out of my league so I'm sticking to the basics first.