Questions Asked on
April 9, 2008

Chemistry
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.530. If a trial's absorbance is measured to be 0.150 and its initial concentration of SCN– was 0.00070 M, the
asked by Sam 
Math
I have two charts. The first one's mean is 1.5 the other is 1.575. The problem asks which lake did the fish weights vary more from the mean? Explain your answer.
asked by Kush 
chemistry
ammonia, NH3, is a typical ingrediant in household cleaners. it is produced through a combination reaction involcing N2(g) and H2(g). if 12.0 mol of H2(g) react with excess N2(g), how many moles of ammonia are produced?
asked by marissa 
precal log
4^(2x5)=8^(x3) Thanks
asked by Deb 
Geometry
Hello, Can someone please tell me if I have the right answer? Thank You my answer: 1.59m If an area in the form of a circle is to be roped off by a rope 10m long, what will be the radius of this area? Round your answer to two decimal places.
asked by Mandi 
english
i have to do an essay in class linking 3 texts AWAY, SEVEN YEARS IN TIBET and A TRACK WINDING BACK i have no idea how to do this
asked by sarah 
FRENCH... AGAIN
Hey guys, I'm just wondering, how do you say fun facts in french? I really need some help. THNX!
asked by I NEED HELP 
Music
Bearing in mind the drama of Schubert's Erlking, suggest a story either from literature or from a movie that you think would make a successful Lied, with solo voice and piano. Brifly describe the story and suggest some effects that might be achieved in the
asked by ebeny 
chemistry
I'm supposed to find the pH of .1M HC2H3O2. since this is a weak acid, i used the ICE method with the given 1.8x10^5 ka. and i got a pH of 4.4, but it was wrong....
asked by tia 
physics
Indicate true or false in each of the following statements: 1. A static magnetic field can do work on a current carrying wire when the current in the wire is perpendicular to the field. 2. The time required for a charged particle to complete one cycle of a
asked by Sandhya 
chemistry
What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid base acid NaOH HC2H3O2
asked by tia 
Philosophy
Write an informative 7001050word letter in the persona of one Eastern philosopher to one of his pupils. In the letter, describe your chosen philosopher's viewpoints concerning one of his philosophies. If needed, cite secondary sources according to APA
asked by TINA 
math
A regular polygon has six axes of symmetry.what is name of this shape?
asked by Niloo 
Gammar Check
Kate Chopin¡¦s stories are essentially about the struggle of freedom Kate Chopin was one of the most individual and adventurous nineteenth century American writers. Throughout Kate Chopin¡¦s stories, she gave the readers a woman¡¦s view of how
asked by Baby 
algebra
To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat(in acres)polled. a. Write an equation using only one variable
asked by Jack 
english (grammar)
Just wondering if this sentence makes sense it sound weird to me for some reason. 2. Due to her extreme fear of public speaking, it was with much apprehension that she took the stage.
asked by E 
grammar (again)
As students, we are endued with many leniencies that aren’t given in the real world most of which are taken for granted.
asked by E 
social studies
guinea has about how much of the worlds bauxite reserves (percentage)?
asked by Lauren 
social studies
sierra leone in west africa was founded as a home for whom?
asked by Lauren needs help!!!!! 
English
Explain the metaphor of adam and eve sin?
asked by JJ 
social studies
What is the chief port of Kenya??
asked by !!!!Need help!!!! 
social studies
What European country colonized Angola??
asked by !!!!Need help!!!! 
social studies
On what two oceans does South Africa border??
asked by !!!!Need help!!!! 
social studies
what is the famous training center in Zimbabwe built by the Shona??
asked by !!!!Need help!!!! 
social studies
in south africa, european groups created and spoke a language called what?
asked by !!!!Need help!!!! 
Maths
what's the square root of 780?
asked by CookieCruncher 
Human Services
I just want to make sure I am understanding the question correctly, and if I am on the right track with my answer. "How do human resource laws affect human service organizations?" Human resource laws affect an organization by ensuring that the organization
asked by Ronda 
social studies
what is the capital of Ghana??
asked by !!!!Need help!!!! 
Grammar/English
May I have someone proofread this? It is for a business presentation I have for a class scheduled today at noon. Mohegan Sun may have entered a maturity stage given that there are strong challenges to marketing management. However, Mohegan Sun cycles back
asked by Manny to ANYONE 
maths
f(x)= 2x+5/x4 and g(x)=2x3 1)Calculate the value of g(4) 2)fg(2) 3)g`1 (7)
asked by cassie 
math
if a car cost $25,000 and after one year it is valued at $21,250.What is the yearly depreciation.
asked by genesis 
chemistry
A solution containing 16.9 grams of a molecular compound dissolved in 250 grams of water has a freezing point of 0.744 degrees celcius. Find the molaltity of the solution. I have 0.744=1.86*m*i. how do i find i. what is the gfm of the solute? I know
asked by asldsfjaljd 
Trig
Solve in terms of sine and cosine: sec(x) csc(x) sec(x) sin(x) so far I have: 1/cos(x) 1/sin(x)  1/cos(x) sin(x) I am not sure where to go to from there. The book says the answer is cot(x) or cos(x)/sin(x) Thank you in advance.
asked by Dennis 
math(need to know if i worked this right)
simplify x3/3  x2/5 5(x3)  3(x2)/15 5x15  3x+6/15 is it :2x21/15???
asked by Sandra 
math
evaluate the squared root of 13.2/0.33,do i work out the division first then find the square root??
asked by mika 
math
If the rental fee on a land line phone is $45 per month and $0 per month for a cell, and the cell cost 85 cents a minute and the land line cost 15 cents a minute, with calls for one month on both phones totaling 1 hr and 5 mins,show how the land line phone
asked by Jay 
math
by simplifying,show that (2x3)(2x+3)(x4)^2= 3x^2+8x25
asked by xavier 
chemistry
What is the orbital hybridization of the central atom S in SF4? 1) sp 2) sp3d 3) sp2 4) sp3d2 5) sp3
asked by saara 
literature
the ti is symbolized by
asked by ana 
math
write 3x^2 +8x25 in the form a(x+h)^2,where a,h and k are real numbers
asked by richard 
Chemistry
If I was to test a set of unkowns in each of the following categories (located below). What would be my best method to figure out the unknowns I was given? I was thinking a flow chart starting with high/low conductivity, but I'm not sure where to go from
asked by Bwalsh 
English/Please revise
In the United States vs. Fawaz Yunis, five men hijacked a Jordanian airliner. Among the passengers were two American citizens who were apparently not the target of the terrorist activity. Hijackers latter released the passengers and blew up the aircraft.
asked by Christi 
Eglish/ grammar revise please
How can I make this sentence better? I am trying to paraphrase, but the last part of the sentence does not sound good. In the case of Yunis, the United States contended jurisdiction found in section 1203 of the Hostage Taking Statue and section 32 of the
asked by Christi 
Physics
1)Which of the following statements is true about electric forces? A)electric forces cause objects to only attract each other. B)electric forces cause objects to only repel each other C)electric forces cause objects to repel or attract each other
asked by Jon 
Physics
1)When two bodies are charged, the total charge before and after charging remains the same because of: A)quantization of charges B)conservation of charges C)law of induction D)coulomb's law I got C but im not sure. I couldn't find anything to state
asked by Jon 
Algebra
Determine whether the number is a solution of x
asked by KEll 
chemistry
what is the pH of a 0.10 M HC2H3O2
asked by mike 
GEORGIA STUDIES
ANALYZE THE IMPACT OF THE RISE OF THE TWO PARTY SYSTEM IN GEORGIA
asked by JASMINE KEIH 
Biology
What does base do to DNA when it is added to it?
asked by Steven 
Physics
1)In a series circuit, each circuit element has the same: A)current B)voltage C)capacitance D)resistance I got A 2)If a resistor is added to a series circuit, the equivalent resistance: A)increases B)decreases C)remains the same D)becomes zero I got A
asked by Jon 
English expression
1. He has long, straight, black hair. 2. He has straight,long, black hair. Which one is correct? I'd like to know the word order.
asked by John 
Math (Trigonometry)
square root(a^2 u^2) where a>0, let u=(a sinx) where pi/2
asked by mtd 
calc
how would you find the derivative of: f(x) = (x^2 + 1)^ (23x)
asked by Anonymous 
Physics
1)If a resistor is added to a parallel circuit, the equivalent resistance: A)increases B)decreases C)remains the same D)becomes zero I got B 2)A 10.0 resistor, 20.0 resistor, and 25.0 resistor are connected in series across a 110V supply. Calculate the
asked by Jon 
Biology
sorry a few more questions why can DNA form fibres that allow it to seprate from RNA while RNA cant form such fibres? also, when treated with DNAse, I know DNA viscosity reduces because its cut up into smaller pieces. but on a graph of viscosity vs time, I
asked by Steven 
Physics
1)Four resistors of 10.0 each are connected in parallel. A combination of four resistors of 10.0 each is connected in series along with the parallel arrangement. What is the equivalent resistance of the circuit? A)80.0 B)40.4 C)40.0 D)42.5 I got C 2)A 2.00
asked by Jon 
Math (Trig)
sorry, another I can't figure out Show that (1cot^2x)/(tan^2x1)=cot^2x I started by factoring both as difference of squares. Would I be better served by writing in terms of sine and cosine? Such as: [1(cos^2x/sin^2x)]/[(sin^2x/cos^2x)1]=(cos^2x/sin^2x)
asked by mtd 
chemistry
how many moles of CO2 can be produced from 15 moles of Fe2O3?
asked by lizzie 
chemistry
What is the maximum amount (in grams) of CO2 that can be obtained from 454g of Fe2O3?
asked by lizzie 
Physics
1)A 15.0 resistor and a 20.0 resistor are connector in parallel. A 5.00 resistor is connected in series with this parallel arrangement. The resistors are connected across a 1.00(I think something else is suppose to be after that but its missing)10^2V
asked by Jon 
math
can you show me how to solve linear systems step by step????? 2x+y=5 xy=1
asked by heather 
Physics
1)A 2.0V battery is connected in a circuit with an ammeter and an unknown resistor, P. The current is observed to be 0.70 A. What would be the current in the circuit if a 12V battery replaces the 2.0V battery? A)4.2 A B)6.0 A C)8.4 A D)34 A I got A
asked by Jon 
Physics
1)Bulb P is rated 60 W, 110 V and bulb Q is rated 100 W, 110 V. Which of the bulbs has the higher resistance? A)they have the same B)cannot be determined C)bulb P D)bulb Q I got C. b/c of higher potential difference. 2)A battery of 10.0 V is connected
asked by Jon 
math: problem solving
During a storewide sale, a TV which usually sells for $450 is on sale for $360. A Stereo which usually sells for $600 is on sale for $480. What would be the sale price of a VCR which usually sells for $500?
asked by Brooke 
chemistry
The concentration and volume of reagents combined in each trial are listed in the table below: Trial 00020 M 00020 M H2O(mL) Fe(NO3)3 (mL) KSCN (mL) 1 5 2 3 2 5 3 2 3 5 4 1 4 5 5 0 Initially (right after combining and before any reaction occurs) the
asked by Dino 
chemistry
The correct interpretation of the equation below is: Fe3+(aq) + SCN–(aq) > and
asked by Lindsey 
science
Which family/group does the element neon belong to.
asked by sami 
Chemistry
I'm having a hard time figuring these out. Please help me on them! For the reaction Fe2O3 + 3 Co = 2 Fe + 3 CO2: a) how many moles of Fe can be produced from 75 moles Co? b) how many moles of CO2 can be produced from 15 moles of Fe2O3? c) what is the
asked by Kate 
Science
Can someone please tell me what acid does to DNA? Ive looked everywhere and can't find anything simple enough to understand and need an answer really quick. thanks!
asked by John 
Math
cone radius= 3cm height=14cm what is the volume? how do you do this
asked by Barb 
physics
1.A proton enters a 2.0 X 10^2 T magnetic field with a speed of 5.8 X 10^4 m/s. What is the radius of the circular path it follows? formula?? 2.Electrons moving at 3.5 X 10^4 m/s pass through an electric field with an intensity of 5.6 X 10^3 N/C. How
asked by martin 
science
wehat is the difference between RNA and DNA that allows them to be separated?
asked by allie 
physics
If a 264 Hz tone is emitted from a piano on a concert stage, how long will it be before a person in the balcony, 60 m away, hears the note?
asked by Deb 
science
does DNAse cleave DNA at a steady rate (linear relationship) or is it some sort of exponential thing?
asked by allie 
physics 2
If you see a flash of lightnng and it is 3 sec. before you hear the clap, how far away is the storm?
asked by Deb 
math
Frank said that all equilateral triangles are similar. Veronica said that all right triangles are similar. who is correct frank, veronica, both, or neither? explain your answer.
asked by christinaa 
chemistry
The concentration and volume of reagents combined in each trial are listed in the table below: Trial 00020 M 00020 M H2O(mL) Fe(NO3)3 (mL) KSCN (mL) 1 5 2 3 2 5 3 2 3 5 4 1 4 5 5 0 Initially (right after combining and before any reaction occurs) the
asked by temperance 
English/ please revise
The issue arising out of the Yunis case is the concern over the authority of the United States statues permitting extraterritorial jurisdiction and application of the United States constitution to aliens. Thus, Yunis argued that under general principles of
asked by Christy 
chemistry
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.550. If a trial's absorbance is measured to be 0.350 and its initial concentration of SCN– was 0.0010 M, the
asked by temperance 
Geometry
I need to find the perimeter of square that has a semicircle (located inside of the square) with a radius of 10 in and it appears that the square is 10 inches as well. I tried the equation 1/2*3.14*10= 15.7, 10 + 15.7 = 25.7 but I don't think it is correct
asked by Mary 
Math
State th coordinates of two points on the following line x=38t y=4t For one point I got (3,0). In the back of the book it says (11, 4) for another point. How would I get that? b) r = (4,0) + t(0, 5) I got (4,0) for one point. In the back of the book it
asked by Alex 
Physics
#1 If the inductance in the LC circuit is quadrupled the natural frequency of that circuit will a)increase to 4 times its original value b)increase to twice its original value c)decrease to 1/2 of its original value d)decrease to 1/4 of its original value
asked by Andrea 
Math
State a direction vector with integer components. x = (1/3) + 2t, y = 3(2/3)t State the integer components and name a point on the line with integer coordinates. r = (1/3, 1/2) + t(1/3, 1/4) Please explain.
asked by Alex 
unscramle
hancips
asked by drake 
C++ Programming
#include #include #include int main ( ) { double noe, nod, dc1, dc2, dc3, dc4, t; cout > noe; nod = noe / 12; dc1 = .50 / 12; dc2 = .45 / 12; dc3 = .40 / 12; dc4 = .35 / 12; cout.setf(ios::fixed); cout.precision(3); if (nod >4) { goto 1; } if ( (nod >4) &&
asked by sonnytsn 
Ethics
How should we judge between the altruism and the egoism? What evidence or arguments might adjudicate between these two positions? How might we try to combine them?
asked by Abby 
Physics
an electric field is produced by a a)consant magnetic field b)changing magnetic field c)either a consant or changing magnetic field d)none of the above I choose b) because in a lab we once dealt with something similar to this question but I can't exactly
asked by Andrea 
Technology
Is the principal of the printing press still active in today's modern, hightech society? Also, would our democratic institutions have been impossible to develop without the mass circulation of knowledge that the printing press enabled?
asked by Abby 
Physics
Is it possible to see a virtual image? a)no they don't exist b)yes the rays appear to emanate from a virtual image c)yes since almost everything we see is virtual because most things do not themselves give off light, but only reflect light coming from some
asked by Andrea 
math  another question
Determine which pairs of lines are parallel or perpendicular. x = 13t, y = 7+4t x = 24s, y = 3s L1: r = (1,7) + t(3,4) L2: r = (2,3) + t(4,3) Now how is that perpendicular? I know how to find it a vector of a line is parallel but I don't know how to
asked by Alex 
Printing Press
Is the internet simply an extension of the printing press in terms of mass circulating information?
asked by Abby 
history
until germany's invasion of poland the democratic nations which had been victorious in world war I had observed all these separate aggressions and done little. the league of nations had all but collapsed in the wake of italy's invasion of ethipia. britain
asked by sake 
science
What is the difference between RNA and DNA that can be used to separate them from one another?
asked by jonathan 
science
During cellular respiration, how many turns of the Krebs cycle are there for each molecule of pyruvate?
asked by Anonymous 
trig
What is the amplitude,phase shift and period of y=sin 2x? What is the amplitude, phase shift and period of y= sin2(x + 3.14/4)
asked by Anonymous 
Math
Find the amount of money in the account at the end. $1000.00, 4 years, 7% compounded semiannually A=P(1+r/n)^nt r=0.07, t=4, P=$1000.00, n=2 A=P(1+r/n)^nt A=$1000.00(1+0.07/2)^24 A=$1000(1.035)^8 A=$1000(1.316809037) A=$1,316.809037 My answer is:
asked by Sara 
science
what is the pronunciation rebus for helium
asked by babygirl 
Physics repost
Four resistors of 10.0 each are connected in parallel. A combination of four resistors of 10.0 each is connected in series along with the parallel arrangement. What is the equivalent resistance of the circuit? A)80.0 B)40.4 C)40.0 D)42.5 This is all I
asked by Jon 
Math (Shapes)
How can teaching children the 4 basic shapes (circle, triangle, square and rectangle) be benificial to a five year old's mathematical development? What is so important about knowing these four basic or simple shape? Just very curios to find out.. thanks
asked by Micheal 
Chemistry
If 2moles of electrons are required to oxidize 1 mole of unknown, what is the molarity of the unknown solution Normality: 0.638 In this experiment: MnO4 is reduced to Mn2+
asked by unknown 
Physics repost
A 2.00 resistor, and a 12.0 resistor are connected in parallel across a 20.0V battery. What is the current flowing through the 2.00 resistor? A)1.67 A B)1.40 A C)11.6 A D)10.0 A This is all I understand. Can you explain step by step and show how to get
asked by Jon 
chemistry
An equilibrium constant A. is small when the products are favored in the reaction. B. is the same, regardless of the initial concentrations of reactants. C. is calculated by dividing the concentration of the reactants by the concentration of the products.
asked by Jason 
English/ please help revise
In the Federal Court case United States vs. Fawaz Yunis, five men hijacked a Jordanian airliner. Among the passengers were two American citizens who were apparently not the target of the terrorist activity. Hijackers latter released the passengers and blew
asked by Christy 
HistoryWWI
Can anyone help me find out the size of the French trenches in World War 1, in feet or yards??
asked by Mike 
poetry
i have to write a palmistry poem about my lifeline. i have to say what my life is like now where it will take me away from and where it will take me too. any ideas?
asked by Anonymous 
Biology
What is the different between codominance, multiple allele, and polygenic patterns? Also, what about dihybrid cross patterns?
asked by Tiana 
math
what is the range of y=Arc sin x? I don't know what is the Arc stands for. Please help and explain. Thanks!
asked by Malisa 
social studies
I need some websites that tell about what cooks did in the medieval times and other stuff about the cooks back then. So please help me!!
asked by brittany 
Physics
A objectspring system oscillates with an amplitude of 3.8 cm. If the spring constant is 210 N/m and object has a mass of 0.50 kg, find the maximum speed of the object. I already have the mechanical energy of the system. How do I find the maximum speed?
asked by Chris Adison 
biology
4) How do inflammatory cells arrive at the inflamed site?
asked by jessica 
Math
4^x=(1/256) I think the answer or I guess the answer I have is: 4^x=16^2
asked by Lyn 
Algebra
I am looking for the domain. f(x)=log(sub3)(5x+1) 5x+1
asked by Anne 
chemistry
What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid acid: acetic acid base: ammonia
asked by unknown 
Gen 105
Objective of Exercise: Conduct research online regarding the strongest of your multiple intelligences. Find three Web sites which accurately describe that intelligence. If you identified more than one dominant intelligence, choose only one for your
asked by Marissa 
us history
what was Nixon's policies of engagement with foreign policy strategies used during the cold war?
asked by sandie 
Aed
help please i need three time management tips for teaching
asked by Dawn 
math
What is the value of y if y=cos(Arc sin 1/2)? How can I solve this problem? Please help and explain! THANKS A LOT!
asked by Malisa 
poetry
any ideas to improve this poem? its a first draft so not very good. My life line, Is speeding down a roller coaster track, Loops and turns, Gliding over the city, Not a worry in the world. It takes me away from this small town. Where it is either extremely
asked by anonymous 
Algebra
I need to find the future population using the model P=42+20ln(11t+1) t= time in years I need to find when it will be 180. I have my work below, but I am stuck. The answer I get is not right, it will not add up to 180. Maybe I am wrong some where.
asked by Jon 
socal studies
how has independence in india affected the opportunitise for change
asked by azariah 
Microeconomics
ok so i must have not payed attention in class when we talked about asymmetric costs in cournot duopoly's, so i am stuck on a homework problem. The problem reads as follows (*Note that my notation of c simply means Marginal Cost): Consider a Cournot
asked by James 
Math Problem
Find the equation for the graph in final state. y=e^x is 4 to right and 2 up y=e^x y=2+e^x4 (answer) is this right?
asked by Kimberly 
chemistry
25 mL of standardized 0.45 mol/L NaOH is titrated with 21 mL of 0.35 mol/L acetic acid. Calculate the pH of the solution
asked by unknown 
chemistry
What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 1010
asked by unknown 
Math Problem
Find equation of graph y=ln(x)3 right and then 7 up y=ln(x) y=7+ln(x^4)answer
asked by Kimberly 
Math
Working with simple addition and multiplication of positive and negative numbers. Have completed 59 of 60 problems on a worksheet, I am stumped by one of them. For example Two numbers are given 30 and 13, You must find two number multiplied together equal
asked by Linda 
Math
State the coordinates of two points on the following line x=38t y=4t For one point I got (3,0). In the back of the book it says (11, 4) for another point. How would I get that? b) r = (4,0) + t(0, 5) I got (4,0) for one point. In the back of the book it
asked by Alex 
chemistry
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.510. If a trial's absorbance is measured to be 0.250 and its initial concentration of SCN– was 0.00050 M, the
asked by Jason 
Math
If a cat has 5 kittens, what is the probability that all 5 will be female?
asked by Tara 
Proofreading
Hi, This is my introduction paragraph for an essay I am writing. I am not really confident on my grammar and sentence stucture. I want to make sure the introduction sounds smooth and formal. I would like to have someone's feedback on it. Thanks! The topic
asked by Bizzy 
Philosophy
can anyone help me with some of the names that Confucius taught?
asked by TINA 
chemistry
What amount is a mol?
asked by Dustin 
Chemistry
I am in an AP high school course and the teacher pulled a fast one on us by asking us what happens to K in an reversible equilibrium equation if the equation is flipped. K equations I am talking about go K=(Products)/(Reactants). The options were they take
asked by Molly 
Math
The sheet is titled Solving Inequalities. I need to solve this question by equivalent equations and show my steps. So, how do I solve 6x
asked by Tyler 
Genetics
Among 10,000 twin births, there were 4350 male pairs, 4150 female pairs and 1,500 malefemale pairs. What are the number of monozygotic and dizygotic twins in this population? I know that the 1500 male female twins have to be dizygotic. How do I find out
asked by Cool 
math
What is the domain of the relation y=Arc sin x? Please help! Thanks!
asked by Malisa 
mATH
HOW do I solve this equivalent equation? 1/4x > 1 (and the > is underlined so I think that means greater than or less than maybe??)
asked by Tyler 
Math
How do I solve this equivalent equation? 5x +2 < 17 (again the
asked by Tyler 
Physics repost
A current of 5.0 A flows for 20.0 minutes through a bulb and delivers 15000 J of electric energy to the bulb. What is the potential difference across the bulb? A)2.5 V B)4 V C)100 V D)100 V (book typo) I was told to do this: energy= V*I*time in seconds
asked by Jon 
in text citation
Do I just put the person's name after the quote when I'm citing a specific person?
asked by billy bob j 
chemistry
A weak base that encompasses a concentration of 1.4 mol per litre has a percent ionization of 0.63%. Calculate the Kb of this weak base
asked by Laura 
chemistry
Calculate the pH of a 1.33 mol/L solution of HCN is the Ka value of HCN is 6.2x10^12
asked by Joseph 
chemistry
22 mL of 0.37 mol per litre acetic acid is titrated by way of a standardized 0.29 mol/L KOH solution. Calculate the pH of the solution after roughly 18 mL of the solution of KOH is added. The Ka of acetic acid proves to be 1.8 x 10^5
asked by Joseph 
chemistry
An AgNO3 solution (44 mL/0.44 M) has been mixed with an NaCl solution (83 mL/1.35x 10^2 M) a)Determine the ion product of the precipitate(potential precipitate) b) Would a precipitate be created? The Ksp of AgCl(s) proves to be 1.8 x 10^10
asked by Joseph 
Chemistry
Does a catalyst affect a reversible equation like the kind in my earlier post?
asked by Molly 
Math
Solve this equivalent equation 2x5>1 Do I add 5 to each side so 2x > 6 than x > 3 is the answer?
asked by Tyler 
Math
Another equivalent equation. 8w + 18 > 22 So, I subtract 18 from each side. make 8w + 1818 > 2218 8W >40 than w > 5? I don't leave either of the negatives right because negative divided by a negative is positive right?
asked by Tyler 
Proofreading
Our professor provided us a content guide for this particular essay. Pasted below is one of his guidelines. 1. Describe the process you used for finding a web article suitable for this assignment. What advise would you give to a parent on finding an
asked by Bizzy 
Math
How do I solve this equivalent equation? 12b
asked by Tyler 
Math
I had this equivalent equation question from earlier and I'm not sure if I got the right answer. 1/4x > 1 (the > is underlined so it's greater than or equal to) is it x > 4 or x > 1/4 or ??
asked by Tyler 
Math
I'm not sure, but I think the following equivalent equation would be answered N/A because an equation like this can't be zero? 2g+5>5 or can it be zero?
asked by Tyler 
chemistry
If the concentration of Pb^2+ is known to be roughly 2.1 x 10 to the power of 9 mol/L within a saturated solution of Pb(PO4)2, calculate the Ksp of Pb3(PO4)2?
asked by Angelo 
Math
Can someone tell me this is right? Look for the domain. f(x)=log(sub3)(5x+1) 5x+1
asked by Anne 
Math
How do I solve this? There are 171 seventh graders eating lunch. This number represents 45% of all of the seventh grades. How many 7th graders are there in the school? Would I take 171 x 45% and add them together or take 171 X .55 or??
asked by Tyler 
Math
What would the median be of the following numbers? 10,12,13,15,17,19,24,25,26,55 Would it be 18?
asked by Tyler 
Opinion..I need it for my paper
Question: Have the large salaries of professional athletes had a negative impact on the athletes or the sports? If yes give name of athlete Question 2: Do "beauty" contest serve any purpose in society? yes/no why/why not Thank you for giving your opinion
asked by Britney 
chemistry
19 mL of 0.50 mool/L NaOH which is standardized becomes titrated alongside 24 mL of 0.44 mol/L acetic acid. Determine the pH of the solution Please judge my work: Becasue NaOH and acetic acid react in a 1:1 ratio, initital moles of acetic acid =0.0019 L x
asked by Joseph 
Math
if parts are marked up 20% before they are sold and the selling price for a seat cover is $54 what was the original sale price. Do I take $54 * 20% then subtract from $54 or??
asked by Tyler 
Math ; please please help.
1. Explain in detail how to determine the value of the independent variable in a quadratic relation if the value of the dependent variable is known. Please check my answer  You would substitute the value for the dependent variable, then you would solve
asked by Amanda 
eth125
Is this country still segregated today?
asked by brandon 
Profreading
This is what the paper is about. Choose a recent (within the last 2 years) article written for parents, teachers, or other family members on how to optimize the development of children (any age between conception through adolescence may be used) or written
asked by Bizzy 
Geometry
Hello, Can you please tell me if I have the correct answer? Thank You my answer: 6m Find the diameter of a circle whose circumference is 18.85m.
asked by Mandi 
Algebra 1B
How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from doing operations with fractions? Can understanding how to work with one kind of problem help understand how to work another
asked by Nena 
eth125
Does the media help or hurt the relationship between Black and White America today?
asked by brandon