# Posts by ANNA-MARIE

Total # Posts: 34

**CHEMISTRY**

When NO(g) (0.06623 mol/L) and 422.6 grams of Cl2(g) in a 180.0 L reaction vessel at 565.0 °C are allowed to come to equilibrium the mixture contains 3.096 mol of NOCl(g). What is the concentration (mol/L) of NOCl(g)? 2NO(g)+Cl2(g) = 2NOCl(g)

**CHEMISTRY**

When SbCl3(g) (4.867 mol) and 0.01217 mol/L of Cl2(g) in a 400.0 L reaction vessel at 958.0 K are allowed to come to equilibrium the mixture contains 0.008586 mol/L of SbCl5(g). What concentration (mol/L) of SbCl3(g) reacted? SbCl3(g)+Cl2(g) = SbCl5(g) Unit Conversions: K = C...

**Song Tunes**

what is a good song tune which will touch your heart automatically

**AP Chem**

Whew. long question. Barium carbonate is the source of barium compounds. It is produced in an aqueous precipitation reaction from barium sulfide and sodium carbonate. (Barium sulfide is a soluble compound obtained by heating the mineral barite, which is barium sulfate, with ...

**AP Chem**

I know this might sound easy... but i need these problems for bonus and i want to make sure they are right Silver nitrate reacts with strontium chloride in an aqueous precipitation reaction. What are the formulas of silver nitrate and strontium chloride? Write the molecular ...

**Geometry**

1. The sides of a triangle have lenghts x, x+4, and 20. Specify those values of x for which the triangle is acute with the longest side 20. 2. use the information to decide if triangle ABC is acute, right, or obtuse. AC=13, BC= sq. rt. 34, CD=3 >>i know this is obtuse ...

**Math**

USE THE INFORMATION TO DECIDE IF TRIANGLE ABC IS ACUTE, RIGHT, OR OBTUSE AC = 13 BC = sq rt. 34 CD = 3 I know the answer is obtuse but I don't know how to get there. The sq rts threw me off

**Math**

set it up like this x-2=2x then x=-2

**Math**

the answer is C 3x+4(-x-2)=-11 3x-4x-8=-11 -1x-8=-11 -1x=-3 x=3 y= -(3)-2 y=-5 any questions?

**Math**

y=3

**Math**

3x+4(x-2)=27 3x+4x-8=27 7x-8=27 7x=35 x=5

**Chemistry**

sorry i meant to type: the percentage composition of a compound is equal to __________. for # 2 the whole question is a.) A compound's molecular formula is numerically equal to its _______ b.) THis means that the molecular formula can be determined given a compound's ...

**Chemistry**

1. The percentage of a composition is equal to ???. 2. A compound's molecular formaul is numerically equal to its ??? Help!! Thanks =]

**Chemistry**

what is the approx. atomic weight for Boron? (to the nearest tenth)

**Chemistry**

Write the formula for each Ionic compound. *barium nitrate

**math**

One triangle has vertices A, B, and C. Another has vertices T, R, and I. Are the two triangles similar? If so state the similarity and the scale factor. AB- 6 BC- 8 AC- 10 TR- 10 RI- 7.5 TI- 12.5

**Science**

take water for example... when its cold.. water freezes (solid).. then warmer it melts(liquid).. then at 100 degrees c it boils (steam/gas)

**Chemistry**

how do Al and Cl ionically bond with each other? I think its AlCl3 am i right?

**math**

if you have two similar triangles and the scale factor is 3:5 and 12 times square root of 3 is one side, what is the cooresponding side

**geometry**

it the smaller side.. bt i don't know how to do the sq root

**geometry**

if you have two similar polygons and the scale factor is 3:5 and 12 times square root of 3 is one side, what is the cooresponding side

**math**

ooh.. damon how did you get the (5x+9)(x-4) = 0 that's what i need to know

**math**

umm... i don't remember how to do any of it. like to factor and get the ( ) ( ) can you tell me how to do that

**math**

wow. i can't believe i forget this from last year. 5x^2 - 11x - 36 = 0 theres some kind of box trick or somethin to factor that but i forget!

**math**

yeah i get it.. thanks some times i have brain farts and once i see it written out im like.. oh i should have known that. thanks again!!

**math**

whoops did it again lol.. no its a-c / b-d ...but i still don't know how to do it

**math**

Show that the given proportions are equivalent. a+c / b+d = a-c / d-b and a / b = c / d

**math!!**

oooooh! i was wondering what i did. thank you =]

**math!!**

those are proportions by the way

**math!!**

Find the value of x. x / x+5 = x-4 / x the book says the answer is 20, but im not getting that. I crossed multiplied and got x^2=(x+5)(x+4) and then multiplied that out x^2 = x^2 + 9x+ 20 and then 9x=20.. what am I doing wrong?

**Is this a word?**

Is excitedness a word? Any better words?

**English**

In my sentence I typed, "I did not have a clue what to expect," and the computer said that it was not proper grammar. Should it be, "I did not have a clue of what to expect?" >> sorry for all the questions this is part of a final and we didn't do ...

**English**

When I joined cheerleading in the seventh grade, it was stressful because the majority of the girls were already extremely good at stunts and gymnastics while everything was new to me. should there be a comma between gymnastics and while?

**English/Writing**

My first cheerleading competition, along with all of the practices and events leading up to it, was a nerve racking, yet extremely exciting experience. I don't know if that is the right subject/verb agreement. It is a topic sentence for a narrative paragraph I have to ...