# Posts by ANDREA

Total # Posts: 887

**AP Chemistry**

thanks!!

**AP Chemistry**

When does absorption occur in infrared spectroscopy? A. When the frequency of the infrared radiation is the same as the rotational frequency of the bond B. When the frequency of the infrared radiation is less than the frequency of the bond C. When the frequency of the infrared...

**AP Chemistry**

Which of the following bonds is the most polar? A. C-F B. C-C C. C-O D. C-N I was originally going to pick C-F because F is the most electronegative, but I'm not so sure. Help?

**biology**

When a chromosome from one parent has a corresponding copy from the other parent, these chromosomes are said to be

**Maths**

The internal diameter of a spherical bowl half full is 20cm. The contents is poured into an empty cylindrical bottle with internal diameter 10cm. Calculate correct to one decimal places the depth of water in the bottle

**Chemistry**

How do I write 96.67673716 with its standard deviation 2.132575 to the correct number of sig figs?

**Math**

A sports store has 116 soccer balls. Over 6 months , it sells 8 soccer balls per month . How many soccer balls are in inventory at the end of the 6 months?

**Linguistics**

I am reposting this because I did not receive an answer and am still stuck. (a) The lexicon and phrase structure grammar cannot provide hierarchical structures (i.e., trees) for sentences such as the following: -A lion escaped from the zoo yesterday. -An eagle flew away ...

**Language Arts 8 A**

Fix your Rough Draft with necessary corrections and that is your final draft.

**Linguistics**

I do not know

**Linguistics**

For each of the following sentences, indicate whether it has a complete hierarchical structure according to the revised lexicon and grammar (yes/no). -A cute lion escaped from the zoo yesterday. -An cute lion escaped from the zoo yesterday. -A gray eagle flew away quickly. -An...

**Linguistics**

What are three different ways an English speaker might make the borrowed Polish place name Szczebrzeszynie[?t??b??????]fit within English phonotactics?

**History**

Explain how Hobbes and Locke influenced the social and political landscape of Europe and the Americas.

**science**

what is the substrate for primase ?

**Math**

Luis had 8/10 meter of wood for the frame thqt he is doing. His father gave him 1/4 meter more.How many meters of wood that he have now?

**science**

what is the substrate for primase ?

**science**

how can you differentiate a peptide bond and covalent bond and wher will you find the covalent bond ?

**Biology**

Why is it important for hydrogen bonds to be weak? -i already tried googling it but im still confused

**Biology**

why does h2o have such attractive forces

**Biology**

Why is it important for hydrogen bonds to be weak? -i already tried googling it but im still confused

**Math**

The value number for 4,600,028

**physics**

a skydiver has amass of 140 kg.at what speed will she have a momentum of 10,000 kg m/s?

**history**

Both Eleanor and Louis were to closely related for the church to tolerate

**history**

what was the relationship between politics and religion in medieval Europe.

**math**

To determine whether there is a relationship between the type of school attended and verbal reasoning scores for Irish students, three samples with 25 students, in each group, were randomly selected from data used by Raferty and Hout (1985). One group of students attended ...

**math**

what is the rate of change of the function y=3

**Book comphrension **

In the book thief, how is Liesel Meminger affected by the war?

**Book comphrension **

In the book thief, how is Liesel Meminger affected by the war?

**Math**

36

**physics**

a 5.4 kg ball slides along a friction-less, horizontal surface at 6.2 m/s. The ball then encounters a ramp which slopes upward. The ball slides up the ramp, slowing down until it stops and slides back down. what is the kinetic energy of the ball as it slides along the friction...

**Math**

Lucy can read 300 pages in 4 hours and harry can read 240 pages in 3 hours.Who can read more pages in one hour?

**English**

Where can you the worksheets you need for each lesson?

**English**

Where can you find the worksheets you need for each lesson?

**English**

After which type of assessment will you be asked to set goals for yourself?

**biology**

1. The table in Figure 12-3 showes the results of measuring the percentages of the four bases in the DNA of several different organisms. Some of the values are missing from the table. Based on Chargaff's rule, the percentages of guanine bases in chicken DNA should be ...

**Amerian government**

PLEASE PLEASE PLEASE HELP ME 1. What type of power does the Constitution grant to the Supreme Court? (1 point) executive power federal power judicial power legislative power 2. Which are examples of judicial restraint in the Supreme Court? Select all that apply. (3 points) &#...

**Math**

Two fractions with different denominators have a sum of 11/12 what are two possible addends that result in the sum?

**Physics , static fluids**

Thank you SO much for all your help!!

**Physics , static fluids**

last one of the night, I promise. Physics really isn't my thing.

**Physics , static fluids**

The density of ice is ?(ice) = 920 kg/m3, and the average density of water is ?(water) = 1.00 g/cm3. What fraction of the total volume of a block of ice is exposed when floating in water? what does this even mean?

**Physics , static fluids**

A particular object weighs 313 N in air and 264 N when immersed in alcohol of density 0.70 g/cm3. What is the volume (in L) and the density (in kg/m3) of the object? I had origionally used the 264N as the force of buoyancy and did the Fb=density*volume*g, then solved for ...

**Physics , static fluids**

I hadn't seen your answer the first time until after I posted this one, your reply to both helped! thanks so much scott!

**Physics , static fluids**

hello, I hope you can help... A diver accustomed to standard snorkel tubing of length 25 cm tries a self-made tube of length 8.6 m. During the attempt, what is the pressure difference (in kPa) between the external pressure on the diver's chest and the air pressure in the ...

**Physics**

Thanks!!

**Physics**

A diver accustomed to standard snorkel tubing of length 25 cm tries a self-made tube of length 8.6 m. During the attempt, what is the pressure difference (in kPa) between the external pressure on the diver's chest and the air pressure in the diver's lungs? I've ...

**english books**

-In Fahrenheit 451 What is Motag's numbness when hes at the subway.

**Math**

So what is the answer

**english books**

Yes, I have but I'm not sure if what I have as my answer is correct, but I said that he shows Montag that the thing he was missing in his life wasn't the actual books but the thing that was once in books.

**english books**

In the book FAHRENHEIT 451, how does Faber change Montag's view on book?

**Maths**

The angle of elevation of the top of a tower from a point 42m away from its base on level ground is 36°. Find the height of the tower

**chemistry**

Copper used in electric wires comes in two flavors (isotopes): 63Cu and 65Cu. 63Cu has an atomic mass of 62.9298 amu and an abundance of 69.09%. The other isotope, 65Cu, has an abundance of 30.91%. The average atomic mass between these two isotopes is 63.546 amu. Calculate the...

**poetry**

what's the significance of the poet's structure and style choice in the poem Dover Beach?

**History**

what's the historical significance of the Hotel des Invalides

**Math**

The sum of the ages of two student is 35. If one students age is a write an expression for the age of the other student in terms of a

**History**

What does this quote mean"Where they burn book they will also ultimately burn people"

**History**

think that all the authors had a strong belief of social justice and they encouraged equality such as socialist and communist

**History**

In the book burnings in Germany what did all the authors of the burned books had in common?

**History**

why where they called "un-German" books,

**History**

what was the motivation and the purpose of the book burnings in Germany.

**Matg**

An equilateral triangle has a perimeter of (33x + 21). What is the length of each side of the triangle?

**Wold History**

@Ms.sue

**Wold History**

1. Which statement best describes the period known as the Old Kingdom? It was a time of dynastic uncertainty. It was a time of development. It was a time of great geographic expansion.*** 2. In what way was the Nile both a benefit and a disadvantage for Egypt? It ...

**Math 6th grade**

Mr.Baker has baked some muffins. If he packs them in boxes of 4, he will have 3 left over. If he packs them in boxes of 5, he will also have 3 left over If he packs them in boxes of 6, he will have only 1 left over. Find the least possible number of muffins Mr.Baker has baked.

**physics**

A capacitor with a capacitance of C = 25.7 μF is slowly charged by a constant current of I = 45.7 nA. How long does it take to charge the capacitor to a voltage of V = 29.4 V?

**Math**

Is the value of the second 5 in 450,852,137 one-tenth the value of the first 5 ? Explain

**Socials Studies**

Métis Bison hunt rules in Northwest Canada in the 1800s

**Socials Studies**

Why were the rules of the bison hunt so strict? Why might some punishments involve destruction of property? The rules were so strict because it was dangerous and can cause death and serious injuries. Am I right? That's my answer for the first question and I need help on ...

**Physics**

Two 2.46uC point charges are located on the x axis. One is at x = 1.01m, and the other is at x = -1.01m. Determine the electric field on the y axis at y = 0.455m & Calculate the electric force on a -2.82uC charge placed on the y axis at y = 0.455m I'm using E=kq/r^2 and F=...

**Socials Studies**

Thank you for the link Ms. Sue

**Socials Studies**

Greatest risks: - if caught, they will be handed back to their masters - be severely punished - be kidnapped and sold to another master

**Socials Studies**

What do you think were the three greatest risks a fugitive slave might face on the underground railroad?

**Physics**

A playground merry-go-round of radius R = 1.92m has a moment of inertia of I = 221kgm^2 and is rotating at 14.0rev/min about a frictionless vertical axle. Facing the axle, a 29.8kg child hops onto the merry-go-round and manages to sit down on its edge. What is the new angular ...

**Physics**

A ring (hollow cylinder) of mass 2.89kg, inner radius 5.35cm, and outer radius 6.35cm rolls (without slipping) up an inclined plane that makes an angle of θ=35.6°, as shown in the figure below. At the moment the ring is at position x = 1.87m up the plane, its speed is...

**math**

solve the equation:3(x-2)^2-12=0

**math**

I'm really struggling with this word problem, please help. Alex is selling tomatoes. last week he bought some at $20 for 50 tomatoes and sold them (except for 30 rotten ones) at 120c each to make $84 profit. how many tomatoes did he buy?

**Chemistry**

A sample of oxalic acid (H2C2O4, with two acidic protons), of volume 37.09 mL was titrated to the stoichiometric point with 22.41 mL of 0.163 M NaOH(aq). What is the molarity of the oxalic acid? Answer in units of M.

**Chemistry**

A sample of sodium hydroxide of volume 11 mL was titrated to the stoichiometric point with 24.5 mL of 0.138 M HCl(aq). What is the initial molarity of NaOH in the solution? Answer in units of M.

**Chemistry**

If the reaction 2H2O2 →2H2O+O2 has a 45% yield, what is the molarity of the H2O2 solution if 2.5 L of this solution pro- duces 150 g of O2?

**Chemistry**

Suppose that 12.41 mL of 0.169 M NaOH(aq) was required to titrate 0.1579 g of an unknown acid (HX). What is the molar mass of the acid? Answer in units of g/mol.

**math**

your barangay officials are planning to raise funds to help the public library.they decided to sell 4000.00 draw tickets worth 10 each. one ticket will win the prize worth 3,500.00. five tickets will each win a prize worth 700.00 each and three tickets will each win the prize ...

**Math**

The walls are rectangles with a height of 6 feet. A pint of paint covers 50 square feet. How much paint do I need to paint the inside walls R=1.54 for three walls?

**Math**

Karl and his dad are building a playhouse, the floor is a rectangle that is 6 feet by 8 1/2 feet How much carpeting do they need for the floor? P= 6 plus 8.5 *2= 29.0 A= L*W= 6*8.5=51

**Statistics**

Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial. n=19, x=15 p=.85, find P(15)

**math**

Karen mixed 1/2 cup of orange juice, 3/4 cup of pineapple juive , and 1/3 cup of grapefruit juice. How many cups of juice did she use?? Please help:)

**math**

Janice conducted a survey at the local calculator factory. She discovered that 10% of every 80 calculators did not work. Using this survey, what kind of predictions can she make about the next 400 calculators? a-not enough information b-40 will not work c-5 will not work d-8 ...

**math**

Celia has a large container in which four different kinds of coins are thoroughly mixed. She wants to take a sample of her coins to estimate which kind of coin she has the most. Which of the following methods is the best way for her to select a sample? A]taking coins until she...

**math**

tyson charges $20 per square foot of rug for a basic design. a client orders one basic rectangular-shaped rug that is 6 feet long and 4 feet wide and one basic rug shaped like a parallelogram that is not a rectangle with a base that is 8 feet long and a height that is 3 feet. ...

**science**

how are artificial flavors made

**science**

what is partially hydrogenated soybean oil and how is it made

**phy 231**

Tall buildings are flexible and undergo simple harmonic motion (SMH) when excited by wind. Suppose the top floor of a skyscraper is in SMH, swaying back and forth with a frequency of 0.181 Hz and an amplitude of 1.5 m. a.What is the maximum speed experienced by top floor ...

**phy 231**

A block of mass 0.39 kg connected to a spring with spring constant 30 N/m is oscillating on a frictionless horizontal surface. Its speed as it passes through its equilibrium position is 0.5 m/s. What is the total energy of the system in J?

**Physics**

A slab of ice with parallel surfaces floats on water. What is the angle of refraction of a light ray in water if the light ray is incident on the upper ice surface with an angle of 60° to the normal?

**grammar**

Whats the prefex and suffix for spouting

**grammar**

What's the prefix suffix and root meaning of spouting

**calculus**

A ship, proceeding southward on a straight course at the rate of 12 miles/hr is, at noon, 40 miles due north of a second ship, which is sailing west at 15 miles/hr. a) How fast are the ships approaching each other 1 hour later? b) Are the ships approaching each other or are ...

**calculus**

An angler has a fish at the end of his line, which is being reeled in at the rate of 2 feet per second from a bridge 30 feet above the water. At what speed is the fish moving through the water towards the bridge when the amount of line out is 50 feet? (Assume the fish is at ...

**calculus**

The sales(in millions) of a DVD recording of a hit movie t years from the date of release is given by a) Find the rate of which the sales are changing at time t. b) How fast are the sales changing at the time the DVDs are released? c) How fast are the sales changing two years ...

**calculus**

Sand is falling into a conical pile so that the radius of the base of the pile is always equal to one half its altitude. If the sand is falling at the rate of 10 cubic feet per minute, how fast is the altitude of the pile increasing when the pile is 5 feet deep?

**Calculus**

Estimate the area of the plane region bounded by the graph of f(x) = e^x, the x-axis, and the vertical lines x = 0 and x = 8 using the trapezoidal method with trapezoids of equal width. Round your answer to 4 decimal places. I got the answer 6892.7480 but it was incorrect and ...

**math**

0.125 0.120 0.1