[TWEWY]

I have a few prelab questions I'm completely lost on since we just covered it in class I'm not asking for the answers, but can someone please help me on these? Just the formulas would be helpful.



A 10.0 mL sample of  CO2 was collected at 25 °C and 755 torr.  The samples' adjusted volume in ml at Standard conditions (STP) = mL.



For a gas mixture containing water vapor and carbon dioxide at a temperature of 25°C at 763 torr,  the partial pressure of CO2 equals = torr




A piece of Alka-Seltzer tablet weighing 0.2506 g generated 32.01 mL of CO2 at STP. (This volume has been corrected for water vapor).
The moles of CO2 produced = moles. {3 s.f.}
MM of CO2 = 44.0 g and MM of HCO3- = 61.0 g
Use equation (1) p 117 of handout and the moles CO2 calculated above to find the  number of moles and the number grams of HCO3- produced.
The number of moles HCO3-  = moles. {3 s.f}
The number of grams HCO3-  = grams. {3 s.f.}
The % HCO3-  in the piece of Alka-Seltzer tablet = %  {3 s.f.}




The volume in L for 10.0 g of CO2 at 25 °C and 765 torr = L.

[Hunter2]

Use all the gas equations: like ideal gas equation, Boyle-Mariotte, Gay-Lussac, Amotons etc.

[TWEWY]

I thought I could use ideal I just don't know how to use them when we barely discussed it.

[TWEWY]

For the last one do I use V= nRT/P

take 10 grams of CO2 x 1 moles of CO2/44 x 298

So would the answer be 5.55?

[Hunter2]

You missed the pressure, convert it to SI-units.