# JL

Most popular questions and responses by JL
1. ## Chemistry

Hi! So, I thought I was very comfortable with distinguishing among Arrhenius, Bronsted-Lowry, 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

2. ## 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?

3. ## 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

4. ## 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

5. ## 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

6. ## Drama

Which of the following could be used as a prop

7. ## 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.

8. ## 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

9. ## 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.

10. ## 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

11. ## 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)=

12. ## 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 head-on in a perfectly elastic collision, find the pressure exerted on the wall. The mass of one N2 molecule is 4.68E-26kg.

13. ## 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) =

14. ## 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

15. ## science

what is the solution of this answer: t1=883.33N t2=1533.3N

16. ## 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!

17. ## MATH

If 1 CM = 48 INCHES, how many CM (or MM) would 80 INCHES be?

18. ## 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?

19. ## 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.

20. ## physics

what happens to the speed of an airplane with a 25 km/h tailwind pushing ahead from tail to front?

21. ## 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?

1. ## English

What drawback does the drum have?

posted on June 18, 2019
2. ## statistics

lh;jh

posted on January 30, 2017
3. ## math

is it really "1/6 of the red"?

posted on November 6, 2016

a and b

posted on November 6, 2016
5. ## math

8x11???

posted on November 6, 2016
6. ## Tricky Math Question

posted on November 6, 2016
7. ## math

4.8 m.

posted on November 4, 2016
8. ## Math

3/8=0.375 and 9/16=0.5625 so...

posted on November 4, 2016
9. ## 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 reason-5d1 is used instead of 4f1.

posted on November 4, 2016
10. ## math

SA=πrs+πr^2 417π=π3S+π3^2 417π= π(3S+9 (417π)/π = [π(3s+9)]/π 417= 3s+9 417-9= 3s+9-9 408=3s 408/3=3s/3 136=S

posted on November 4, 2016
11. ## brain drain

is this a riddle????

posted on November 4, 2016
12. ## math

exactly :)

posted on November 4, 2016
13. ## show low high school

25-3=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
14. ## math

is it 16^2=x??? if it is, neither 4 nor -4 is the answer..

posted on November 4, 2016
15. ## 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
16. ## Math

do you mean 800 times 11.5%? if this so, 800 times 0.115=?

posted on November 4, 2016
17. ## Math

n+10=-10 n=-10-10 n=(-10)+(-10) n=?

posted on November 4, 2016
18. ## Math

1 1/4 = 1.25 3-1.25=1.75 1.75-1.25=0.25 you can only cut two 1 1/4 yards from a 3 yards string.

posted on November 3, 2016
19. ## PLZ HELP HELP HELP

posted on November 2, 2016
20. ## math

1in.:10miles = 5in.:____miles

posted on November 2, 2016
21. ## physics

Is it 1 revolution = 12 hours?

posted on November 2, 2016
22. ## math

J= x; E= 2x;B=x+6 x+2x+x+6=50 4x+6=50 4x=50-6 4x=44 4x/4=44/4 x=11 J=11;E=2(11)=22;B=11+6=17

posted on November 2, 2016
23. ## Math

Unfortunately, I don't know any tricks,techniques or method that can be use in that problem.

posted on November 1, 2016
24. ## math

Defect. time/No. of Hours/Orig.time 12pm-1pm / 4hrs / 12pm-4pm 1pm-2pm / +4hrs / 4pm-8pm 2pm-3pm / +4hrs / 8pm-12am 3pm-4pm / +4hrs / 12am-4am 4pm-5pm / +4hrs / 4am-8am 5pm-6pm / +4hrs / 8am-12pm 6pm-7pm / +4hrs / 12pm-4pm 7pm-8pm / +4hrs / 4pm-8pm TOTAL

posted on November 1, 2016
25. ## Maths (done question a but cant do b)

try to use distance formula, then compare their distance

posted on November 1, 2016
26. ## 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
27. ## Algebra

function! no similar domain(x),or it shows one-to-one relation.

posted on November 1, 2016
28. ## Algebra

oh sorry...hypothesis rather,,,an educated guess...:D

posted on November 1, 2016
29. ## mathematics

P700.75

posted on November 1, 2016
30. ## Math

1,995,000???

posted on November 1, 2016
31. ## Algebra

i guess the answers are: marimar: 10 sergio: 18

posted on November 1, 2016
32. ## geometry

Use the Distance Formula. then divide the answer by 2 to get the radius.

posted on November 1, 2016
33. ## 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
34. ## Math

Formula: π*r^2 or π[(d/2)^2] {π*[(25/2)^2]}/6≈81.77 sq.cm.

posted on October 29, 2016
35. ## math

32 hours (8:00 p.m.of the next day)

posted on October 29, 2016
36. ## electricity and magnetism

F≈0.97N

posted on October 29, 2016
37. ## 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+4ã5 & someone else said the answer should be 3ã5+1. I'm confused on the foiling. She foiled it this way: ã5*ã5 -ã5 + 5*ã5

posted on April 2, 2012
38. ## math

Just add 37+2=39 and then subtract 39 from 59. =10

posted on February 1, 2012
39. ## 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
40. ## Chemistry

Thanks, Dr. Bob! It seems my initial thinking was correct. Perhaps the question was marked wrong by mistake!

posted on April 24, 2010
41. ## Assignment Help

For some reason the numbers are together example 1=5 not 15

posted on March 28, 2010