Chemistry Lab C

Jacobi
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Chemistry Lab C

Post by Jacobi » September 17th, 2018, 7:47 am

Let's get this QM going!

My first question:

What is the formula for stannic phosphate?

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Re: Chemistry Lab C

Post by Creationist127 » September 21st, 2018, 5:56 am

Sn[sub]3[/sub](PO[sub]4[/sub])[sub]4[/sub]
2018: Hovercraft, Thermo, Coaster, Solar System
2019: Thermo, Circuit Lab, Sounds, Wright Stuff
2020: Circuit Lab, Wright Stuff, Machines
2021: Circuit Lab, Machines, WIDI, Wright Stuff

2021 grind starts now... and no excuses about not knowing the rules yet!

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Re: Chemistry Lab C

Post by Creationist127 » September 21st, 2018, 6:03 am

Next question: What are the names and formulas (with charges) of the oxyanions of chlorine?
Hint: there are 4 total.
2018: Hovercraft, Thermo, Coaster, Solar System
2019: Thermo, Circuit Lab, Sounds, Wright Stuff
2020: Circuit Lab, Wright Stuff, Machines
2021: Circuit Lab, Machines, WIDI, Wright Stuff

2021 grind starts now... and no excuses about not knowing the rules yet!

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Re: Chemistry Lab C

Post by Jacobi » September 21st, 2018, 3:28 pm

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 -

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Re: Chemistry Lab C

Post by Jacobi » October 11th, 2018, 5:17 pm

Since this thread has been down for a while, I'll restart it:

Name a property and a use of hydrochloric acid.

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Re: Chemistry Lab C

Post by Dinoswarleafs » October 24th, 2018, 8:30 pm

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?

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Re: Chemistry Lab C

Post by Jacobi » October 25th, 2018, 6:42 am

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.

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Re: Chemistry Lab C

Post by Dinoswarleafs » October 25th, 2018, 5:04 pm

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

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Re: Chemistry Lab C

Post by Jacobi » October 25th, 2018, 5:56 pm

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

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Re: Chemistry Lab C

Post by Dinoswarleafs » October 25th, 2018, 6:19 pm

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

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