# Posts by Gabriela

Total # Posts: 52

chemistry
calculate the molality of a solution that has 1.02kg sucrose C12H22O11 dissolved in 554g water?

chemistry
What is the molality of a solution composed of 25ml og toluene C6H5CH3 ( density=0.866g/ml) in 75 ml of benzene ( density=0.879g/ml)

chemistry
ph= 11.2

Math
The length of a rectangle is twice its width. The perimeter of the rectangle is 126 feet. (Write the equation) i've already tried to divide 126 by two which gave me 63 but i didn't know what to do with the 63.

algebra
11

math
21.75

math
Your friend is standing below the window outside of our classroom and attempting to throw a rock past the window to get your attention. The rock is thrown straight up in the air and passes our window 0.40s after being released. It passes the same window on its way back down 1....

algebra
A candy cane 20 cm high has a circumference of 3 cm. The red “ribbon” makes exactly 4 complete turns round the candy cane while its two ends touch the cane's top and bottom. How long is the ribbon in cm?

Statistics
Exam Grades. A statistics professor is used to having a variance in his class grades of no more than 100. He feels that his current group of students is different, and so he examines a random sample of midterm grades (listed below.) At á = 0.05, can it be concluded that...

Math
what is 1944 in roman numerals?

english
Can I get the answer for chaper 6

Science
la naturaleza de la cincia

what is the pattern and expression for n+10

language arts
i need to write an essay on why it is important to be obedient or to obey people or authority. i just don't have any ideas. help?

Social Studies
Three reason why the native American population decline when the Spanishmade contact with them

simplex Method
X=12 y=6 P=78

i have a plate that has an area is 36 inches and a perimeter of 24 inches. i want to buy a square cake to put on the plate. i want there to be a one inch border between the cake and the edge of the plate.What size cake should I order? What will the area and perimeter of the ...

math
i don't get it????

chemistry
how do you predict the products of: (NH4)3PO4+ MgSO4-> HI-> Fe+o2-> Fe+ MgO-> HCl+ NaOH->

social studies
what factors affect climate? name and describe one of the climate regions of the united states. read climate and people. then fill in the blanks. vocabulary.

calc
analyze the function ln x = cx^2 to find the unique value of c such that there is exactly one solution to the equation. to do this, find the value of c such that both sides of the equation have equivalent slopes at some point; this will give you a proper x-coordinate to work ...

calculus
Find the point P in the first quadrant on the curve y=x^-2 such that a rectangle with sides on the coordinate axes and a vertex at P has the smallest possible perimeter.

PreCal PreAp
A=44degrees,14',28" B=50degrees,25'32" b=38.66

Gabriela, am I a rhombus

algebra 1
The ratio of the first sequence is 2.5 so the recursive formula is going to be an= 2.5(an-1)

Math
open ended:Give a rea-world quantity that the integer could represent. A.-5 b.0 C.8 D.opposite of -7

Math
OPEN-ENDED:G

world geography
WHERE IN THE ATLANTIC OCEAN WOULD AN EARTHQUAKE MOST LIKELY OCCUR?

Biology (History?)
I'm actually writing an English paper within which I mention how humans attempt to find answers to nature even when technology is not sufficiently advanced to do so. In order for my paper to be accurate I was wondering: when did people in America discover the process of ...

math
Beth has 5base ten blocks. She has at least one of each type of block. The value of her blocks is greater than 140. What blocks could she have

English-Grammar
# 2 SOUNDS CORRECT TO ME....

french
SE TAIS-TOI

S.A.T Math
yeah i guess that works to...lolsz

S.A.T Math
what don't u understand so i can explain it more??

S.A.T Math
OR U CAN DO WAT BRIE SAID I TEND 2 TAKE THE LONG BUT SAFE WAY...LOLSZ...

S.A.T Math
It is like u are a owner of a store... when tony(x) starts you pay him \$12.50 an hour for his first day & a half(36 hours) in every week & after that he gets paid \$25.00 per hour... Elanie(y) gets paid \$15.00 an hour for the first 40 hours she works for a week & after that she...

Math
well... a 1 is always infront of the variable... so just add 1R+1R^2

Math

ARAISININTHESUN
no problem......

ARAISININTHESUN
Yes, the reason agasis(i 4got his name cause i read this book last year) gives Betheatha that nickname Alaiyo, is because it means for one whom bread is not enough.... because in life she wants more than what was offered or regular for african americans in that time period. ...

algebra1
never mind......

algebra1
im doing my summer homework & im a little confused on this one...please help me... What is the next term in the geometic series 16,-4,1,-1/4,..... a. -1/8 b.0 c.1/16 d.1/8 e.1/2

Calculus
How can I find the horizontal asymptote of: y=e^x/(2e^x+5) i know you have to do the limit as x approaches infinity... but that is about all i know... mulitply the numberator and denominator by e^-x y= e^0/(2e^0 + 5e^-x) y= 1/(2 + 5e^-x) now, take lim as x >> int. Notice...

Chemistry
I am really confused about polar and non polar molecules. I really don't understand how to know if something is polar or not. Or about bond polarity vs. molecular polarity (net dipole moment). Also, if it has a lone pair when you draw a lewis structure does this ...

chemistry
Which solvent will dissolve more in given solute: 1. Ethylene glycol (HOCH2CH2OH) in hexane(C6H14) or H2O 2. Diethyl ether (CH2CH2OCH2CH3) in H2O or CH3OH? 3. NaCl in CH3OH or CH3CH2CH2CH2OH I know that like dissolves like. Therefore the molecules with the similar ...

Chemistry
Are all/most organic compounds non polar? Not all, certainly. Many are non-polar. Most, I don't know. It all depends upon how you define most. Acids, acid chlorides, amines, phenols, ketones, aldehydes, and the like are polar. There are a bunch of those around. There are ...

Calculus URGENT test tonight
Integral of: __1__ (sqrt(x)+1)^2 dx The answer is: 2ln abs(1+sqrt(x)) + 2(1+sqrt(X))^-1 +c I have no clue why that is! Please help. I used substitution and made u= sqrt(x)+1 but i don't know what happened along the way! Your first step was a good one. next, let u = sqrt x...

Chemistry
From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 e7) times greater than the wavelength corresponding to the energy difference between a particular excited state of the ...

Chemistry
Posted on April 12. From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 e7) times greater than the wavelength corresponding to the energy difference between a particular ...

Chemistry
From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 e7) times greater than the wavelength corresponding to the energy difference between a particular excited state of the ...

chemistry
Equal masses of gaseous N2 and Ar are placed in separate flasks of equal volume at the same temperature. Tell whether each of the following statements is true or false. Briefly explain your answer in each case. (a) There are more molecules of N2 present than atoms of Ar. (b) ...