Recent content by priscilla89

This question is at this website below, its on pg 399 Q 15 i. I will appreciate the help for just one question at least. http://www.chemistry.ohio-state.edu/~rzellmer/chem122/homewk/homewk9/122ch10_exer9.pdf"

Homework Statement If the atmospheric pressure is 0.975 atm, what is the pressure of the enclosed gas when its an open-tube manometer and the h is 52 cm? The Attempt at a Solution I know you would have to set up a proportion. I was thinking .975 / 1 = x / 760 x = 741 torr But...

Okay, then it would be 2.5 g Al x (1 mol Al / 27 g) x (2 mol Al2O3 / 4 mol Al)

Homework Statement If the reaction of 2.5 g of Al with 2.5 g of O2 produced 3.5 g of Al2O3, what is the percent yield of Al2)3? Be sure to write and balance equation. Homework Equations Percent Yield = (actual yield / theoretical yield ) x 100 The Attempt at a Solution 4Al + 302...

Homework Statement Corey has take a job with an initial salary of $26,000 an annual raises of $1,250/ (a) What will his salary be in the 6th year? (b) How much money in total will Corey have earned after six years? Homework Equations an = a1 + (n - 1) d Sn = n / 2 (a1 + an)...

Ok thanks

Homework Statement For the arithmetic sequence (2 - x), (-6 + 2x), (x + 2), solve for x and find t10. Homework Equations an = a1 + (n - 1) d The Attempt at a Solution Would I have to start off like this below::: an = a1 + (n - 1) d d = (-6 + 2x)-(2 - x) = (x + 2)-(-6 + 2x)

Thanks for the help. I really do appreciate this - Happy Holidays Everybody

Right, now I understand it. You would've to do the same for CO2:: CO2 .2818 / .0471 = 6 C6 H6 O2

Homework Statement A compound with a molecular weight of 110.1 g that contained only C, H, and O was analyzed by combustion. the combustion of a 5.19 g sample of the compound resulted in the formation of 12.4 g of carbon dioxide and 2.55 g of water. What is the molecular formulas of this...

But the formula has to be (CH3)2 SO. 24 / 78 x 100 = 30.7 % - thanks a lot and happy holidays

Yes, but I think somehow it's the formula that's wrong.

Homework Statement What is the percentage of carbon in dimethylsulfoxide, C2 H6 SO4? Homework Equations mass of C / total mass x 100 = percentage of carbon The Attempt at a Solution The total mass = 126 total mass of C = 24 Wouldn't it be 24 / 126 x 100 = 19 % But...

Right it would've to be y = sin (0) = 0. Basically it would be then 0 = 0 + b b= 0

Ok thanks a lot. - Happy Holidays