# Posts by hellogoodbie

Total # Posts: 22

**algebra 2**

Posted by hellogoodbie on Saturday, January 16, 2010 at 3:24pm. Posted by hellogoodbie on Saturday, January 16, 2010 at 2:59pm. How is this problem done? IF f(x)=2x^2-8x-3 FIND f(-2) algebra 2 - bobpursley, Saturday, January 16, 2010 at 1:42pm Put in for x the value -2, and ...

*January 16, 2010*

**algebra 2**

Wow, I'm so confused. Can somebody just solve this problem step by step please?

*January 16, 2010*

**algebra 2**

Posted by hellogoodbie on Saturday, January 16, 2010 at 2:59pm. How is this problem done? IF f(x)=2x^2-8x-3 FIND f(-2) algebra 2 - bobpursley, Saturday, January 16, 2010 at 1:42pm Put in for x the value -2, and compute f(-2) algebra 2 - hellogoodbie, Saturday, January 16, 2010...

*January 16, 2010*

**algebra 2**

where did u get the 4 from?

*January 16, 2010*

**algebra 2**

How is this problem done? IF f(x)=2x^2-8x-3 FIND f(-2) algebra 2 - bobpursley, Saturday, January 16, 2010 at 1:42pm Put in for x the value -2, and compute f(-2) algebra 2 - hellogoodbie, Saturday, January 16, 2010 at 1:47pm so is the answer f=21/2? if that is right, thank you ...

*January 16, 2010*

**algebra 2**

How is this problem done? IF f(x)=2x^2-8x-3 FIND f(-2) algebra 2 - bobpursley, Saturday, January 16, 2010 at 1:42pm Put in for x the value -2, and compute f(-2) algebra 2 - hellogoodbie, Saturday, January 16, 2010 at 1:47pm so is the answer f=21/2? if that is right, thank you ...

*January 16, 2010*

**algebra 2**

so is the answer f=21/2? if that is right, thank you bobpursley

*January 16, 2010*

**algebra 2**

How is this problem done? IF f(x)=2x^2-8x-3 FIND f(-2)

*January 16, 2010*

**chemistry**

for my last 2 questions, I cannot figure out how to set it up. what numbers do I use?

*January 11, 2010*

**chemistry**

for my last 2 questions, I cannot figure out how to set it up. what numbers do I use?

*January 11, 2010*

**chemistry**

I am now stumped on another problem. How many times greater is the rate of diffusion of helium gas,HE, than that of carbon dioxide gas CO{tiny 2 at bottom}, at the same temperature and pressure? please tell me how to set this problem up and tips on how to do it.

*January 11, 2010*

**chemistry**

so what would be rate 1 and 2?

*January 11, 2010*

**chemistry**

I'm stumped again :( the question is - A gas sprayed from an aerosol can effuses 5.06 times slower than oxygen.If the molar mass of oxygen is 32.g/mol, what is the molar mass of the unknown gas? I don't know if I am doing the ideal gas law or grahams law or how to set ...

*January 11, 2010*

**chemistry**

Oh! I think I understand now

*January 11, 2010*

**chemistry**

So is grams, n in the formula PV=nRT? I think I am starting to understand this.

*January 11, 2010*

**chemistry**

So here I am doing my HW worksheet on the ideal gas law/graham's law ad I have gotten to this one problem where I am totally stuck and confused. Please help me by telling me how to set this up and giving me tips, if necessary. What is the mass (in grams) of ammonia gas (NH...

*January 11, 2010*

**chemistry**

hey! i've been waiting for my question to be answered. if of you have another question, please post a new question.

*January 11, 2010*

**algebra**

length=2w-3

*January 11, 2010*

**chemistry**

so here i am doing my hw worksheet on the ideal gas law/ghram's law ad i have gotten to this one problem where i am totally stuck and confused. Please help me by telling me how to set this up and giving me tips, if necessary. What is the mass(in grams) of ammonia gas(NH{...

*January 11, 2010*

**chemistry**

so here i am doing my hw worksheet on the ideal gas law/ghram's law ad i have gotten to this one problem where i am totally stuck and confused. Please help me by telling me how to set this up and giving me tips, if necessary. What is the mass(in grams) of ammonia gas(NH{...

*January 11, 2010*

**chemestry**

so all i do is add 273.15 to the temperature in celsius( sorry about the typo. i no i spelled chemistry wrong too)and then multiply/divide everything?

*January 11, 2010*

**chemestry**

how do you solve the ideal gas law when you are given the temperature in celcius instead of kelvin. Heres an example question. Calculate the volume occupied by 3.25 moles of carbon dioxide at 25degrees celcius and 750mm Hg.

*January 11, 2010*

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