# Posts by jessica

Total # Posts: 3,344

**Chemistry**

You prepare a solution from 10.0 mL of 0.100 M MOPS buffer (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.071 M NaOH. Next, you add 1.00 mL of 1.89 × 10-5 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine present in the form...

**Social Studies**

PLEASE ANSWER! PLEASE ANSWER! PLEASE ANSWER! 1) Identify two problems resulting from urban sprawl in the western region of the United States. If these problems are not solved, what will the outcome likely be? 2) Why do you think the Canadian government is opposed to Quebec'...

**Social Studies**

PLEASE ANSWER! PLEASE ANSWER! PLEASE ANSWER! Identify two problems resulting from urban sprawl in the western region of the United States. If these problems are not solved, what will the outcome likely be?

**math**

Thanks John I got 6/6 100%

**algebra**

The number of red beads sheila has is four times as many as the number of green beads she has .There are 75 red and green beads.How many red beads does sheila have?

**Physics**

A 1.6-mole sample of an ideal gas is gently cooled at constant temperature 280 K. It contracts from initial volume 37 L to final volume V2. A total of 1.9 kJ of heat is removed from the gas during the contraction process. What is V2? Let the ideal-gas constant R = 8.314 J/(mol...

**writing**

Sentence 1: I am writing in reply to your advertisement in the Elkhart Sun for a sails representative. Which correction should be made to sentence 1? 1. Replace to with too 2. Replace sails with sales 3. Insert a comma after advertisement 4. Insert a comma after for 5. No ...

**algebra**

the larger leg of a right triangle is 7ft longer than its samller leg. the hypotenuse is 1ft longer than the larger leg. how many feet long is the samller leg?

**Prenatal Development**

I'm having a hard time choosing a teratogen (anything that causes harm to a fetus), especially since all the easy ones to find ones are all taken--Radiation, Rubella, Syphilis, Hydrocodone, Heroine, Methamphetamine, Methadone, Caffeine, Nicotine, Mercury/Methylmercury, ...

**math check answer**

Thanks so much

**Math--Algebra**

Please help! I need this for extra credit!

**Math--Algebra**

What are the math problems?

**physics**

Susie and Sally are seated on opposing sides of a seesaw. Sally weighs 500 N and is seated a distance of 2 m from the fulcrum (point of rotation). Susie weighs 450 N and is seated a distance of 2.5 m from the fulcrum. Who is being lifted upward?

**math**

what is 14.876 rounded to the nearest hundredths?

**Spanish 2**

Thanks a lot!! :)

**Spanish 2**

Double Object Pronouns. Sustituya (Substitute) los complementos directos e (and) indirectos por sus respectivos pronombres. Modelo: Alberto le sirvió café a Jimena. Alberto se lo sirvió. Can you please check my anwsers for these sentences? Gracias! 1....

**SPANISH 2 HELP**

Thanks

**SPANISH 2 HELP**

Will someone check my anwsers? Thanks ¿Quién te sacó estas fotos? A. Julio me los sacó. B.Julio te las sacó. C.Julio me las sacó. ¿Quién les mandó estas flores a Uds.? A.Ceci nos los mandó. B.Ceci nos las ...

**Spanish 2**

I need help picking the rightsentence form? Thanks ¿Quién te sacó estas fotos? A. Julio me los sacó. B.Julio te las sacó. C.Julio me las sacó. ¿Quién les mandó estas flores a Uds.? A.Ceci nos los mandó. B....

**Math**

Find the solution and round to the hundredths. 24 divided by 0.865. I got two answers I'm confused.

**Chemistry**

Use activity coefficients to find the concentration of hydrogen ions in a solution of 65.0 mM butanoic acid and 0.01 M NaCl. The ionization constant of butanoic acid is Ka = 1.52 × 10-5. Take the size of C3H7COO– to be 500 pm. Find [H+], pH, and alpha.

**QSO 510**

221667

**HIstory HELp!!**

Please help with history? I have a project where I have to find the primary and or secondary source of today's time. The questions are 1.what is the context of the primary/secondary source that you have discovered? 2.what do you believe this reveals about society today? 3...

**HISTORY**

Please help with history? I have a project where I have to find the primary and or secondary source of today's time. The questions are 1.what is the context of the primary/secondary source that you have discovered? 2.what do you believe this reveals about society today? 3...

**precalc**

The front sprocket off a bicycle is 12 centimeters and the rear one is 5 centimeters. If the front sprocket is rotating at 40 revolutions per minute, what is the angular velocity of the little sprocket?

**English**

And I forgot to add, out of the 6 quizzes I only took 2. 4/5. I know I'll do good on the labs & exams but the quizzes are kinda hard. Do you think the quizzes will hurt my grade in the end? thank you!

**English**

Yes, I have to have c+ to pass this class.so far I have 65.6% & need 76% to pass? If I take the other 8 labs, 3 quizzes, 2 exams that are left & get C's on exam or Ds;do you think I'll get B? Thank you so much!

**English**

i have a hard time calculating my grade & am in college. Please tell me the grade I have so far & will have, thank you!365 points in the course is needed. Lecture exams and quizzes are worth about 60% of the total grade &90 ≤ A 80 ≤ B < 90 70 ≤ C < 80 ...

**Science**

What property of water causes a water droplet to be shaped like a dome? Also can you please explain these words? Surface temperature, surface area and surface tension.

**Chem**

how many grams of KMnO4 should be weighed out to give 0.100 mole?

**math**

Nina walked 15 yards to pauls house which rule shows how many yards nina walks for every yard pauls walks

**math**

If the radius of a circular wave is increasing at 2 meters/sec, how fast is the area changing when the radius is 5 meters? A)62.8 square meters per second B)25.0 square meters per second C)31.4 square meters per second D)6.3 square meters per second E) None of the above

**math**

If the radius of a circular wave is increasing at 2 meters/sec, how fast is the area changing when the radius is 5 meters?

**science**

what are three states of matter

**Physical Science**

A sedan weighing 4000 pounds travelling at 30mph collides head on with a compact car weighing 2000 pounds and travelling in the opposite direction at 45 mph. What is the resultant velocity of the combined vehicles?

**Math**

Thank you so much Ms.sue your a life saver!!!

**Math**

I'm trying to find the height of the rectangular pyramid

**Math**

The volume of it is 1125 cubic inches, the length is 18 inches, and the width is 15 inches. Can you also show me how to do because I have a test on it Monday. Thanks!

**math**

the pet shop owner told Jean to fill her new fish tank 3/4 full with water. Jean filled it 9/12 full . what fraction of the tank does Jean still need to fill?

**math**

Hello if you need homework help call this number (5084843860)

**math**

I have no idea

**history**

When the First World War ended, Americans welcomed what they hoped would be a “return to normalcy.” The decades that followed, however, are ones which would rarely be described as normal, in comparison to what came before or after. During these decades, a struggle ...

**Science**

Solution preparation: 500ml's of .2M Sodium Cacodylate Buffer with a pH of 7.4 I don't even know where to start, could someone please tell me how to do this problem.

**life orientation**

Air pollution is one such environmental problem that causes ill health,accidents,crises(and disaster within any community within South Africa or globally)

**math**

You add 3/4+3/4+2 to get your answer

**math**

Paid $750 if u multiply 2.50 and 300. Then I multiply 750 and get 225. Fo I subtract that from 750 and get 525 or is it the snswer $225?

**math**

Ok but I don't knoe how to do it

**math**

I'm so confused on how to do it

**math**

I need help!!! Whats the name of the other person you did it to?

**math**

Miriam orders a shipment of 1500 pounds of ice for her supermarket. The ice comes in individual 5 pound bags that cost Miriam orders$2.50 each. Miriam sells the bags for 30% more than her cost. How much profit, in dollars, will Miriam's supermarket earn from the sale of 1 ...

**math**

Ok this is what I did. 5÷1500 got 300. Took 300×2.50 got 750. Subtracted 120-36 got 84. Then, I took 750×.3 and got $225. Ibdon't know if that's the answer or what. This is just confusing.

**trigonometry**

what are the solution sets to x^5-2x^3+x=0 and how do you get them?

**math Statistics**

Suppose that 33 out of 300 selected american drivers read the newspaper while driving. what percent of sample proportions are greater than this?

**Basketball Current Event**

Do you go to Helen Bernstein? Apex? I think I know you

**Math**

IDK but I'm not in eight grade, YET!! Comment, share, and love My pro in Facebook. Find me as Jessi Vertiz

**math**

solve the simultaneous equations; log x base 2-log y base 4=4, log (x-2y)base 2=5

**Math**

40+40x0+1 40+0+1 41

**math**

if log x base a,log y base a and log z base a are three consecutive terms of an AP,show that x,y and z are consecutive terms of a GP

**math**

simplify log squaroot of 2 base 7

**Algebra**

there is no solution

**Algebra**

there is no equal sign.so to what is that equated to

**CHEM**

the equation is already balanced

**chemistry**

C H N MASS 39.97g 13.41g 46.62 #mol 3.33 13.41 3.33 ratio 1 4 1 empirical formular CH4N empirical mass 30 (CH4N)2=C2H8N2 THUS THE MOLECULAR FORMULA

**math**

20 cups

**Physics**

A block of mass 17.9 kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 2.01 m/s2. What is the tension in the cable? What is the magnitude of the net force acting on the mass? What is the speed of the...

**Math**

SIMPLY MULTIPLY THE 8 HOURS BY 7 DAYS WHICH GIVES 56

**Science**

What is the percent of fresh water and salt water?

**Math**

Name the vertices of the square to the right

**Easy Math**

I am confused on how to do this ? ! Jeff is a salesperson in a retail store and earns $52 per week plus 13% of his weekly sales. If Jeff made $312 one week, what were his sales that week?

**Chemistry**

CONCENTRATION OF NaClO IN COMMERCIAL BLEACH. Bleach comes as 6%(mass/volume) solution of NaClO. Calculate the Molarity of NaClO in bleach to three significant figures ( you need molar mass of NaClO)

**College Algebra**

Hello - I am stuck on this problem and I'm in serious need of some help. I don't understand this question at all. The problem is: Find the equilibrium quantity and equilibrium demand function for the given: Supply: P=45q Demand: P=q^2+10,000

**math**

Find the % of Discount Regular Price $25,000 Sale Price $22,000

**math**

Find the % of Discount Regular Price $90 Sale Price $22.50

**math**

1 ten

**math**

Find the % of Discount Regular Price $125 Sale Price $100

**math**

Find the % of Discount Regular Price $125 Sale Price $100

**math**

thanks Ms. Sue!!!

**math**

Find the % of Discount Regular Price $72 Sale Price $60

**Physics**

Maria throws an apple vertically upward from a height of 1.3m unit an initial velocity of velocity of 12.4m/s 1. will the apple reach a friend in a tree house 5.3m above the ground. 2. If the apple is not caught, how long will the apple be in the air before it hits the ground.

**Physics**

Stephanie hits a volleyball from a height of 0.80m and gives it on initial velocity of 17.5m/s straight up 1. How high will the volleyball go? 2.how long will it take the ball to reach its maximum height?

**math**

suppose that denise had doubled the number od trays of chocolate chip and oatmeal raisin cooies she bakes.How many trays of cookies would she have baked?

**PHY 171**

How does a derivation differ from an experiment or theory?

**Physical Science**

I studied this 2 years ago in college and am no back in school. I can't remember any of this stuff and I really need to figure it out. Please Help Me!! The Latent Heat of Vaporization for water is 540. cal/g. How much heat (in calories) must be added to 10.0 g of water at ...

**Math**

Please explain to me how I can do this .Sarah works in an appliance store. She gets a commission in addition to her hourly pay. She earns a 4% commission for sales up to $4000 and a 7% commission for all sales in a month above $4000. Last month her sales were $5300. How much ...

**Simple Math**

Two eight-sided number cubes are thrown. Given that one of the cubes shows a five, what is the probability that the sum of the numbers that come up on the two cubes is six?

**Simple Math**

A drawer contains 8 red socks, 4 white socks, and 2 blue socks. Without looking, you draw out a sock, return it, and draw out a second sock. What is the probability that the first sock is white and the second sock is blue?

**social studies**

i tried that and an article did not show up

**social studies**

Where could I find an article about gun control?

**math**

divide 775 by 3

**Math**

yes.

**Math**

divide 200 by 120 to get your answer

**Business English**

it is

**Algebra**

you take .80and mutiply by 99, then take that answer and subtract it from 99

**Algebra**

$80.19

**English 8R - help!**

I have.

**english communication**

it is right

**Math 8R - HELP!**

yeah.you are right.

**Math 8R - HELP!**

gtg

**Math 8R - HELP!**

that is not right what grade are you in bobpursley?

**Math 8R - HELP!**

2x0=0 5x=-3 what is x?