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Chemistry Lab C

Posted: September 17th, 2018, 7:47 am
by Jacobi
Let's get this QM going!

My first question:

What is the formula for stannic phosphate?

Re: Chemistry Lab C

Posted: September 21st, 2018, 5:56 am
by Creationist127
Sn[sub]3[/sub](PO[sub]4[/sub])[sub]4[/sub]

Re: Chemistry Lab C

Posted: September 21st, 2018, 6:03 am
by Creationist127
Next question: What are the names and formulas (with charges) of the oxyanions of chlorine?
Hint: there are 4 total.

Re: Chemistry Lab C

Posted: September 21st, 2018, 3:28 pm
by Jacobi
Creationist127 wrote:Next question: What are the names and formulas (with charges) of the oxyanions of chlorine?
Hint: there are 4 total.
Perchlorate: ClO4 -
Chlorate: ClO3 -
Chlorite: ClO2 -
Hypochlorite ClO -

Re: Chemistry Lab C

Posted: October 11th, 2018, 5:17 pm
by Jacobi
Since this thread has been down for a while, I'll restart it:

Name a property and a use of hydrochloric acid.

Re: Chemistry Lab C

Posted: October 24th, 2018, 8:30 pm
by Dinoswarleafs
Jacobi wrote:Name a property and a use of hydrochloric acid.
Strong acid. (Just curious ... are there any other notable characteristics? Would corrosive count?). It's the main component in stomach acid so I guess you can say it helps digest food?

Metal balls are poured into a 25mL pycnometer that on its own has a mass of 18.0g. After massing the pycnometer now, the mass is revealed to be 122.3g. After filling the device with water at 20 degrees C, the total mass is 160.3g. What is the density of the metal balls?

Re: Chemistry Lab C

Posted: October 25th, 2018, 6:42 am
by Jacobi
Dinoswarleafs wrote:
Jacobi wrote:Name a property and a use of hydrochloric acid.
Strong acid. (Just curious ... are there any other notable characteristics? Would corrosive count?). It's the main component in stomach acid so I guess you can say it helps digest food?

Metal balls are poured into a 25mL pycnometer that on its own has a mass of 18.0g. After massing the pycnometer now, the mass is revealed to be 122.3g. After filling the device with water at 20 degrees C, the total mass is 160.3g. What is the density of the metal balls?
Mass of Balls = 122.3 - 18.0 = 104.3 grams
Mass of Water Added = 160.3 - 122.3 = 38.0 grams
Volume of Water added = 38.0 mL
Are you sure that those numbers are right? I'm getting a volume of water greater than the volume of the pycnometer.

Re: Chemistry Lab C

Posted: October 25th, 2018, 5:04 pm
by Dinoswarleafs
Jacobi wrote:
Are you sure that those numbers are right? I'm getting a volume of water greater than the volume of the pycnometer.

OOPS sorry. I was making up numbers as I went and forgot to check that they made sense. I guess say it holds 50 mL :P mb

Re: Chemistry Lab C

Posted: October 25th, 2018, 5:56 pm
by Jacobi
Jacobi wrote:
Dinoswarleafs wrote:
Jacobi wrote:Name a property and a use of hydrochloric acid.
Strong acid. (Just curious ... are there any other notable characteristics? Would corrosive count?). It's the main component in stomach acid so I guess you can say it helps digest food?

Metal balls are poured into a 25mL pycnometer that on its own has a mass of 18.0g. After massing the pycnometer now, the mass is revealed to be 122.3g. After filling the device with water at 20 degrees C, the total mass is 160.3g. What is the density of the metal balls?
Mass of Balls = 122.3 - 18.0 = 104.3 grams
Mass of Water Added = 160.3 - 122.3 = 38.0 grams
Volume of Water added = 38.0 mL
Are you sure that those numbers are right? I'm getting a volume of water greater than the volume of the pycnometer.
Volume of Object = 12.0 mL
Density = m/V = 8.7 g/mL = 8700 kg/m^3

Re: Chemistry Lab C

Posted: October 25th, 2018, 6:19 pm
by Dinoswarleafs
Jacobi wrote:
Volume of Object = 12.0 mL
Density = m/V = 8.7 g/mL = 8700 kg/m^3
Cool. Sorry about that :/

Give an element for n-type doping w/ Silicon