Please Help:
1)What would be the weight of 1.45 moles of nitric acid?

I found the GMW=63.I think I would have to divide 63 by 12 and get 5 moles, but I do not know what to do next.

Question

Please Help:
1)What would be the weight of 1.45 moles of nitric acid?


I found the GMW=63.I think I would have to divide 63 by 12 and get 5 moles, but I do not know what to do next.

livya15 · Answer

@Loser66 @phi

livya15 · Answer

@robtobey @shamil98

livya15 · Answer

@arabpride  @linda3 @SoloN8v88

arabpride · Answer

I don't know ~ i dont even take chem. srry.. *^.^*

anonymous · Answer

try this website. it has a calculator on here that might be helpful to you http://www.sigmaaldrich.com/chemistry/stockroom-reagents/learning-center/technical-library/molarity-calculator.html

livya15 · Answer

@arabpride thanks for looking :)

arabpride · Answer

Your're very welcome *^.^*

livya15 · Answer

@darkest_midnight i tried the website but it didnt help

ipwnbunnies · Answer

Do you know the molecular formula for nitric acid?

anonymous · Answer

I'm sorry :( well i see here that the density for nitric acid is 1.413 g per milliliter and the formula weight is 63.01 per mole....

ipwnbunnies · Answer

No we don't.

livya15 · Answer

That information is all the info the problem gave me @darkest_midnight 
@iPwnBunnies  is it HNO3

ipwnbunnies · Answer

We have the amount of moles of nitric acid, and we have the molar mass of the nitric acid. We can find the mass of it.

ipwnbunnies · Answer

Do you need the mass or the weight? You can convert grams to some weight I guess.

anonymous · Answer

bunnies shall help you lol

livya15 · Answer

i need the Weight of 1.45 moles of HNO3

ipwnbunnies · Answer

Ok, I'll just assume that means mass. Darkest already told us that one mole of HNO3 is 63.01 grams.

livya15 · Answer

ok

ipwnbunnies · Answer

But we have 1.45 moles sooooo:
$$mass HNO3 = (1.45 moles)(\frac{63.01 grams}{mole})$$

livya15 · Answer

so the answer would be 91.35 grams?

ipwnbunnies · Answer

Idk, I didn't do the math lol. That is the mass of the HNO3. I don't know what units you want for weight, so that's as far as we can go. Maybe your assignment means mass.

ipwnbunnies · Answer

Yes, it is 91.35 grams.

livya15 · Answer

thank you for the help @iPwnBunnies

anonymous · Answer

now, what i said was 63.01 grams. that was the assumed calculation from the formula that automatically appeared when i selected nitric acid.

ipwnbunnies · Answer

That's the molecular mass for nitric acid, HNO3.
1.01 amu + 14 amu + 3(16 amu) = 63.01 amu = 63.01 g/mol

anonymous · Answer

just making sure that's right. I hate giving people wrong answers.

anonymous · Answer

amu is an obsolete unit. Use daltons.

ipwnbunnies · Answer

Is it really?

ipwnbunnies · Answer

I still see 'amu' used.