JL
Most popular questions and responses by JL
Chemistry
Hi! So, I thought I was very comfortable with distinguishing among Arrhenius, BronstedLowry, and Lewis acids and bases. But then, I answered this question wrong and am looking for help because I'm not sure if my "second choice" answer is correct. The
asked on April 24, 2010 
general chemistry II
Phosphoric Acid is usually obtained at an 85% phosphoric acid solution, by mass. If this solution is 15 M, what is the density of the solution? What is its MOLALITY?
asked on January 29, 2014 
Physics
In a ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a pendulum. If the mass of the marble is 0.0255 kg and the mass of the pendulum is 0.250 kg, how high will the pendulum swing if the marble has an initial speed
asked on October 26, 2015 
AP Physics
A Physics book has a height of 26 cm, a width of 22 cm, and a thickness of 4 cm. Find the pressure that the Physics book exerts on a desktop when the book lies face up and when the book is balanced on its spine. I know that P=F/A, I am just not sure which
asked on November 15, 2009 
math
Im stuck on this question. Could someone answer it. Id appreciate it. The projected rate of increase in enrollment at a new college is estimated by: dE/dt = 9000(t + 1)^3/2 where E(t) is the projected enrollment in t years. If the enrollment is 5000 now
asked on April 24, 2011 
Drama
Which of the following could be used as a prop
asked on March 27, 2018 
Maths
Martha invested $50,000 in a boutique 4 yr ago. Her investment is worth $100,000 today. What is the effective rate (annual effective yield) of her investment? Please round your answer to two decimal places.
asked on December 18, 2015 
physics
Three capacitors with C1=C2=C3= 10.00 uF are connected to battery with voltage V= 194 V. What is the voltage across capacitor C1
asked on November 23, 2011 
math
Could someone answer this question. im stuck on it. Id appreciate it. Use substitution to find the indefinite integral. çp(p+3)^5 dp Use C as the arbitrary constant.
asked on April 23, 2011 
Assignment Help
There are 1000 students in the University of A. A sample of 10 observations was obtained regarding the rating of the service quality of dining hall. Here is the sample: Observation Rating 1 5 2 6 3 7 4 3 5 8 6 5 7 6 8 3 9 4 10 7 calculate the confidence
asked on March 28, 2010 
Math
Could someone answer this question so I understand it. Thanks. Find the antiderivitive of the following derivitive that satisfies the given condition. dy/dx = 4x+4/3rd root of x y(1)=0 y(x)=
asked on April 25, 2011 
AP Physics
In a period of 2s, 4.8E23 nitrogen molecules strike a wall area of 8.6 cm^2. If the molecules move at 308 m/s and strike the wall headon in a perfectly elastic collision, find the pressure exerted on the wall. The mass of one N2 molecule is 4.68E26kg.
asked on November 15, 2009 
Math
I am stuck on this question. Could someone work it out. Id appreciate it. Find the amount of A in an account after t years given the following conditions. dA/dt = 0.04A A(0) = 7000 A(t) =
asked on April 25, 2011 
Marketing
There are 1000 students in the University of A. A sample of 10 observations was obtained regarding the rating of the service quality of dining hall. Here is the sample: Observation Rating 1 5 2 6 3 7 4 3 5 8 6 5 7 6 8 3 9 4 10 7 calculate the confidence
asked on March 27, 2010 
science
what is the solution of this answer: t1=883.33N t2=1533.3N
asked on August 27, 2018 
Math
How many significant numbers are there in 2000? in 0.00150? p.s. I already studied it twice and i couldn't understand it. thanks!
asked on October 31, 2016 
MATH
If 1 CM = 48 INCHES, how many CM (or MM) would 80 INCHES be?
asked on August 31, 2016 
Applied Ethics
How do I hypothesize Contracturalism for a vet who needs to get a certain breed of dog for his daughter with allergies, but would prefer to adopt rather than purchase one from a puppy mill?
asked on April 2, 2012 
Math
Could someone answer this question so I understand it. Thanks Find the indefinite integral: çx/ã3x^2+4 dx Use C as the arbitrary constant.
asked on April 24, 2011 
physics
what happens to the speed of an airplane with a 25 km/h tailwind pushing ahead from tail to front?
asked on October 3, 2010 
English
Okay my English teacher set up this assignment to relate a person (needs to be alive) to a character in the a man for all seasons by Bolt. I chose Richard rich, but I am failing to find someone.. any idea of who I can relate Richard rich to?
asked on July 14, 2009

English
What drawback does the drum have?
posted on June 18, 2019 
statistics
lh;jh
posted on January 30, 2017 
math
is it really "1/6 of the red"?
posted on November 6, 2016 
PLZ CHECK ANSWERS
a and b
posted on November 6, 2016 
math
8x11???
posted on November 6, 2016 
Tricky Math Question
thanks for your answers... I can now explain the different answers to my professor..
posted on November 6, 2016 
math
4.8 m.
posted on November 4, 2016 
Math
3/8=0.375 and 9/16=0.5625 so...
posted on November 4, 2016 
chemistry
#57 (La)Lanthanum=[Xe] 5d1 6s2 #58 (Ce)Cerium=[Xe] 4f1 5d1 6s2 based on what I've read, La is the answer,but for some reason5d1 is used instead of 4f1.
posted on November 4, 2016 
math
SA=πrs+πr^2 417π=π3S+π3^2 417π= π(3S+9 (417π)/π = [π(3s+9)]/π 417= 3s+9 4179= 3s+99 408=3s 408/3=3s/3 136=S
posted on November 4, 2016 
brain drain
is this a riddle????
posted on November 4, 2016 
math
exactly :)
posted on November 4, 2016 
show low high school
253=22 22/2=11 1st number: 11+3=14 2nd number: 11 checking: 1.the first number which is 14,is 3 more than the second number,11 (CORRECT) 2. the sum of 14 and 11 is 25 (CORRECT)
posted on November 4, 2016 
math
is it 16^2=x??? if it is, neither 4 nor 4 is the answer..
posted on November 4, 2016 
Geometry
C =2(pi)r r= C/(2*pi) substitute your given to the derive formula...(as far as I know, Pi as no unit of measurement :D)
posted on November 4, 2016 
Math
do you mean 800 times 11.5%? if this so, 800 times 0.115=?
posted on November 4, 2016 
Math
n+10=10 n=1010 n=(10)+(10) n=?
posted on November 4, 2016 
Math
1 1/4 = 1.25 31.25=1.75 1.751.25=0.25 you can only cut two 1 1/4 yards from a 3 yards string.
posted on November 3, 2016 
PLZ HELP HELP HELP
your correct answers were nos. 10,14,18,and 19
posted on November 2, 2016 
math
1in.:10miles = 5in.:____miles
posted on November 2, 2016 
physics
Is it 1 revolution = 12 hours?
posted on November 2, 2016 
math
J= x; E= 2x;B=x+6 x+2x+x+6=50 4x+6=50 4x=506 4x=44 4x/4=44/4 x=11 J=11;E=2(11)=22;B=11+6=17
posted on November 2, 2016 
Math
Unfortunately, I don't know any tricks,techniques or method that can be use in that problem.
posted on November 1, 2016 
math
Defect. time/No. of Hours/Orig.time 12pm1pm / 4hrs / 12pm4pm 1pm2pm / +4hrs / 4pm8pm 2pm3pm / +4hrs / 8pm12am 3pm4pm / +4hrs / 12am4am 4pm5pm / +4hrs / 4am8am 5pm6pm / +4hrs / 8am12pm 6pm7pm / +4hrs / 12pm4pm 7pm8pm / +4hrs / 4pm8pm TOTAL
posted on November 1, 2016 
Maths (done question a but cant do b)
try to use distance formula, then compare their distance
posted on November 1, 2016 
math
If the time in the defective clock says 12:15 p.m., then,it means 1:00 p.m. in the normal clock. So, an hour in the def.clock is equal to 4 hours in norm.clock. I list the time in the defective clock and the original time.
posted on November 1, 2016 
Algebra
function! no similar domain(x),or it shows onetoone relation.
posted on November 1, 2016 
Algebra
oh sorry...hypothesis rather,,,an educated guess...:D
posted on November 1, 2016 
mathematics
P700.75
posted on November 1, 2016 
Math
1,995,000???
posted on November 1, 2016 
Algebra
i guess the answers are: marimar: 10 sergio: 18
posted on November 1, 2016 
geometry
Use the Distance Formula. then divide the answer by 2 to get the radius.
posted on November 1, 2016 
Math
what??? 2/27??? 1/9 + 1/18 = 3/18 or 1/6 (lowest term) Change them into similar fractions having the Least Common Denominator (LCD) of 18; =[1(2)/9(2)] + 1/18 =2/18 + 1/18 =3/18 or 1/6 same procedure with 1/10 + 1/15
posted on October 29, 2016 
Math
Formula: π*r^2 or π[(d/2)^2] {π*[(25/2)^2]}/6≈81.77 sq.cm.
posted on October 29, 2016 
math
32 hours (8:00 p.m.of the next day)
posted on October 29, 2016 
electricity and magnetism
F≈0.97N
posted on October 29, 2016 
Intermediate Algebra
We are to multiply & simplify. My teacher foiled it but I think she made a mistake because the answer she gave was 1+4ã5 & someone else said the answer should be 3ã5+1. I'm confused on the foiling. She foiled it this way: ã5*ã5 ã5 + 5*ã5
posted on April 2, 2012 
math
Just add 37+2=39 and then subtract 39 from 59. =10
posted on February 1, 2012 
english
No, first If needs to be capital. Everytime you write I it needs to be capital. Second, add if between wondering and I. Im in 5th grade and I know this.
posted on June 3, 2010 
Chemistry
Thanks, Dr. Bob! It seems my initial thinking was correct. Perhaps the question was marked wrong by mistake!
posted on April 24, 2010 
Assignment Help
For some reason the numbers are together example 1=5 not 15
posted on March 28, 2010