# Posts by Caitlin

Total # Posts: 287

**Chemistry**

Rank the carbon-carbon bonds in order of decreasing bond length. Rank carbon-carbon bonds from highest bond length to lowest. To rank bonds as equivalent, overlap them. 1,2,3

**Chemistry**

The dipole moment (mu) of HBr (a polar covalent molecule) is 0.851 D (debye), and its percent ionic character is 12.6 %. Estimate the bond length of the H-Br bond in picometers.

**Chemistry**

The bond in O2 is shorter than the O-O bond in compounds that contain an O-O single bond. Explain this observation.

**Chemistry**

The Lewis structure of O2

**Chemistry**

Explain why it is necessary to form a double bond in the Lewis structure.

**Chemistry**

Which of the subshells in the electron configuration of Hf behave as core orbitals Check all that apply 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d

**Chemistry**

What do we call the part of the universe that is not part of the system

**Chemistry**

What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.7×10^{15} Hz?

**Physics**

A horizontal spring attached to a wall has a force constant of 780 N/m. A block of mass 1.70 kg is attached to the spring and oscillates freely on a horizontal, frictionless surface as in the figure below. The initial goal of this problem is to find the velocity at the ...

**Chemistry**

In the recent Chem Activities, we have been learning about how Coulombic attractions and repulsions determine properties of atoms like ionization energy and atomic radius. We have made two assumptions not completely justified by the data we had up to this point: electrons are ...

**Math**

A ten-pin bowling ball has a volume of about 5274 cm3. A candlepin (8) bowling ball has a volume of about 48 in3. About how much greater is the volume of a ten-pin bowling ball than the volume of a candlepin bowling ball?

**Math**

Tonia deposited a total of $174.52 into her checking account. She also withdrew a total of $186.15. Use addition to find the net change in Tonia’s checking account.

**Chemistry**

What is the frequency of radiation that has a wavelength of 13 \mu m, about the size of a bacterium?

**Chemistry**

What is the frequency of radiation that has a wavelength of 13 \mu m, about the size of a bacterium?

**geometry**

AB=5x+2 AC=3x+17

**Chemistry**

Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant, S, calculate Zeff} for these two ions. Express your answers as integers. Enter your answers numerically separated by a comma. Zeff Cl-, Zeff K+

**Math 10**

A cylinder has a surface area of 250cm2. The height is twice as big as the radius. What is the height of the cylinder?

**Science**

thanks but that website was absolutely no help.

**Science**

Name the TWO variables in the following hypothesis... Homeless women are subjected to more spousal abuse than are housed women.

**American History**

This is what my teacher wrote up on the board today and i was needing some help with it i don't really understand it all... This is exactly what he wrote: In a page-long essay describe how we got Texas Include: Stephen Austin, Zachary Taylor, Manifest destiny, Santa Anna, ...

**American History**

This is what my teacher wrote up on the board today and i was needing some help with it i don't really understand it all... This is exactly what he wrote: In a page-long essay describe how we got Texas Include: Stephen Austin, Zachary Taylor, Manifest destiny, Santa Anna, ...

**Statistical Psychology**

A social psychologist was interested in how communication patterns can affect creative problem solving in small groups. seven groups of each of two types were formed: vertical and horizontal. In the vertical groups, participants were organized hierarchically, so that they ...

**algebra**

what is the formula to find the heigh of a trapazoid?

**Math 7th**

In order to be allowed to go on a does trip, 80% of the students in a class must pads a pop quiz. If there are 26 students in the class. Approximately how many must pass the quiz?

**Math 7th**

In order to be allowed to go on a does trip, 80% of the students in a class must pads a pop quiz. If there are 26 students in the class. Approximately how many must pass the quiz?

**math**

cesar bought 2 bags of flower that each weighed a kilogram and another bag that weighed 500 grams.how many grams of flower did he buy?

**polygons**

aerlintg

**polygons**

can you help me unscramble this word loav

**musicbbnchkuytdbnt**

dmygxi

**Chemistry**

sodium acetate

**chemistry**

300.0 g of ammonia react with 36.0 moles of sulfuric acid to produce ammonium sulfate. How many moles of excess sulfuric acid are left over after the reaction is complete?

**mathematicas**

how do i do my homework quickly like a ninja but thoroughly??

**Physics**

I just need ideas on how i can estimate the height of a building by using only a tennis ball and a stop watch. I can only measure it by being on the ground level.

**Math**

how would you answer this?

**Math**

Your friend is taking an algebra class that began after ours. Write your friend an email explaining a general strategy for factoring in a very organized way.

**Earth and Physical Science**

A 901 kg car is traveling north down a country road when a deer crosses in front of the car. By slamming on the breaks, the care is able to decelerate at 4.0 meters per second squared. What is the frictional force between the street and the car?

**biology**

how to identify leaves marple.lime,willow,hawthorn rose,rhododendron,birch ivy.oak.sycamore,horse chesnut,holly to make a branch key then turn it into paired statement key

**Math**

5-s(4-7)+3s 5-s(-3)+3s 5+3s+3s 5+6s

**physics**

A box sits at rest at the top of a ramp of length 1.79 m and elevation angle 38.0deg. The box accelerates down the ramp, and when it reaches the bottom its velocity is 4.05 m/s. What is the coefficient of friction μ on the ramp?

**math**

how do you get 24 by using numbers 1-12 by going up,down,and diagonal

**Gym**

how do you get 24 by using numbers 1-12 by going up,down,and diagonal and by using addition

**CHEM 1LB**

well C is the wrong answer. Another 3 points i have to make up on the piratical D:

**CHEM 1LB**

E is right

**Chemistry**

bdegjm is right

**Reaction Descriptions**

abd, bf, cf, cd, ae, ae is correct

**Physics**

Consider the diagram of the box and bucket. If the coefficient of static friction is 0.5 and the coefficient of kinetic friction is 0.3, find the maximum mass of the bucket in order for the system to be in static equilibrium. If the block was given a slight nudge to get it ...

**Math**

A tree casts a shadow 10 feet long. A 6-ft. man casts a shadow 4 ft. long. The triangle formed by the tree and its shadow is similar to the triangle formed by the man and his shadow. How tall is the tree?

**Life Science**

two organisms were found to have different genotypes but the same phenotype. Predict what these phenotypes might be? and Explain

**Math**

Marcia developed a roll of film and received 4-inch by 6-inch prints. She wants to have one picture enlarged to an 8-inch by 12-inch print. What kind of transformation is this? What is the scale factor?

**Math**

o, duh.. thanks you both of you

**Math**

Express 3/11 as a decimal number. do u go 3 divide by 11 or 11 divide by 3 ?? so it would be 0.27 repeated or 3.6 repeated ??

**math**

1-1-7-7 2-2-6-6 3-3-5-5 4-4-4-4 still think also hope it helps

**Math**

thank you Ms. Sue

**Math**

Please help me solve this.. It costs $10 plus $8 per hour to rent a canoe. Brandon and Erin have $50. Solve the following equation to find how many hours they can rent a canoe. 8h +10 = 50

**math**

there will be 16 bacteria. you take 2 time 4 to find out how many bacteria in one then 2 times 4 is 8 so 8 times 2.. equals 16

**5th grade**

Math. How can I make up a data set of at least 12 numbers that have the following landmarks, maximum 18: mode: 7, range: 13, median: 12?

**college physics**

Consider two vectors A = 4i - 4j and B = -i - 8j . (a) Calculate A + B. (b) Calculate A - B. (c) Calculate absolute value(A + B). (d) Calculate absolute value(A - B). (e) What is the direction of A + B? (from the +x axis) (f) What is the direction of A - B? (from the +x axis)

**college physics**

A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 140 cm and makes an angle of 130° with the positive x axis. The resultant displacement has a magnitude of 144 cm and is directed at an angle of 30.0° to the positive...

**college physics question corrected**

Given the vectors A = 2.00i + 8.00j and B = 4.00i - 5.00j, do the following. (a) Draw the vector sum C= A+ B and the vector difference D= A- B. (b) Calculate C and D, first in terms of unit vectors. Calculate C and D in terms of polar coordinates, with angles measured with ...

**college physics**

Given the vectors = 2.00 + 8.00 and = 4.00 - 5.00, do the following. (a) Draw the vector sum = + and the vector difference = - . (Do this on paper. Your instructor may ask you to turn the paper in.) (b) Calculate and , first in terms of unit vectors. Calculate and in terms of ...

**ela**

Thank you Bobpursley from Caitlin

**ela**

Below the main level, we have a large playroom. What part of speech is below?

**physics**

A car starts from rest and travels for 5.0 seconds with a uniform acceleration of +1.5 m/s^2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s^2. If the brakes are applied for 3.0 seconds, how fast is the car going at the end of the braking period...

**Government**

I need helo understanding what will likley pass a bill and what wont likley make a bill pass

**math**

40,300 , thank you(:

**math**

About 310 000 t of Alantic cod were caught in 1991. In 2001, the mass of cod caught was 87 percent less. How much cod was caught in 2001 ? and how do you find the answer?

**MATH-HELP ASAP**

thank you !!

**MATH-HELP ASAP**

Joline collects hockey cards. She needs 5 cards to complete a set. This is 20 percent of the set. How many cards are in the set? and how do you figure this out ? please help:(

**physics**

how do I calculate mass of one object in an elastic collision? I have the equation m1v1 initial + m2v2 initial = m1v1 final + m2v2 final How do I rearrange this to solve for m2?

**Biology 11 U**

In the U.S. 1 out of 10 000 babies is born with phenylketonuria (PKU). The disease is caused by a recessive allele. The frequency of individuals in the U.S. population born with PKU corresponds to q squared. What is the given information? (e.g. p squared = 99999/10000)

**Religion**

How does Jesus' ministry reflect a particular emphasis on the Temple in Jerusalem as the center of Jesus' life? (in the Gospel of Luke)

**history- HELP!**

there are ten provinces in canada but on seven in 1873. wHICH PROVINCED DID NOT EXIST IN 1873?

**Math**

becca repost it, nobody will answer

**chemistry**

to clean a clogged drain, 26 g of sodium hydroxide is added to water to make 150 ml of solution what are the pH and pOH values for the solution?

**math**

How do I do 5 1/3 * 3/8

**Maths**

Solve step by step 4sin^2x = 3cos^2x

**Math**

I think the expression is 2x + 3y and it would equal 27.54 if x = 0.59, y = 8

**math**

thank you soo muchh! (:

**math**

explain what each equation represents. 1) 5e+1=15

**Religion**

Thank you so much!

**Religion**

What is the influence of Gnosticism in the text John 1:1-1:18?

**Religion**

Okay,thank you very much!

**Religion**

actually John 1:1-1:18, sorry I forgot to put that. And for the question, i meant "where is it making...: not "what..." sorry

**Religion**

What bold statement does the gospel of John say that the other gospels don't?

**chem1lbuci**

I got nf=1, lyman. But the problem is unlimited, so it doesn't matter with all of the bs answers here anyways.

**4th grade math**

I don't know how to go about solving this problem: There were 93 students going to camp. After equal groups of fewer than 10 students were formed for hiking. 2 students were left over . How many equal groups were formed? Thanks!

**tests**

thank you!

**tests**

I need help narrowing down answers in regents style exams. can you help me?

**biology**

Yes, i also ment for example, if there was a,b,c,d, i narrowed it down to a and c. thanks. And may i please have the regents links? thank you so much!

**biology**

What is the best way to narrow down questions in a regents style exam? I can't seem to figure it out and need some help. Thank you.

**math**

Plz tell me the answer i have been doing this for hours

**Chemistry**

Formic acid, HCO2H, is a weak acid. Write a net ionic equation for the reaction of formic acid and aqueous potassium hydroxide.

**Math-Algebra**

I am a tutor for a student working on the same thing so I somewhat know this material. (the book is Introductory and Intermediate Algebra for College Students, by the way) Unfortunately I don't have the book, so I am using my general knowledge and the girl I tutor sent me ...

**Math**

5my square

**math**

The answer is- you mom! OOOOOOHHHHH!!!!

**biology**

What is the heterotrophic hypothesis and how can I explain it from both a biological and conceptual framework?

**language arts**

slebsurs prustos

**Calculus**

Here is my problem that I am trying to work on: A rock is dropped from the top of a 300-ft cliff. It's velocity at time t seconds is v(t0= -32 t feet per second. a.) Find the height of the rock above the ground at time t. b.) How long will the rock take to reach the ground...

**Calculus**

well i have this homework question that says: A rock is dropped from the top of a 300-ft cliff. It's velocity at time t seconds is v(t0= -32 t feet per second. a.) Find the height of the rock above the ground at time t. b.) How long will the rock take to reach the ground? ...

**Calculus**

well i have this homework question that says: A rock is dropped from the top of a 300-ft cliff. It's velocity at time t seconds is v(t0= -32 t feet per second. a.) Find the height of the rock above the ground at time t. b.) How long will the rock take to reach the ground? ...