Wednesday

February 22, 2017
Total # Posts: 819

**PLEASE HELP CHEM DR BOB :O**

Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.) Bin # 1: Slightly higher Bin #2: Slightly lower Compounds: -butanol -but-2-enal -heptan-3-one -hept-4-en-3-one -cinnamaldehyde -3 phenylpropanal

*August 26, 2012*

**Dr. Bob please help :)**

Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.) Bin # 1: Slightly higher Bin #2: Slightly lower Compounds: -butanol -but-2-enal -heptan-3-one -hept-4-en-3-one -cinnamaldehyde -3 phenylpropanal

*August 25, 2012*

**Chem**

Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.) Bin # 1: Slightly higher Bin #2: Slightly lower Compounds: -butanol -but-2-enal -heptan-3-one -hept-4-en-3-one -cinnamaldehyde -3 phenylpropanal

*August 25, 2012*

**health**

ME TOO OMG

*August 11, 2012*

**7th grade math**

solve for k -4k-8k+7=-53 Please explain how you found your answer!! Please help!!

*August 8, 2012*

**measurments**

To Ms. sue sorry late reply, no its just a typo but i still need help

*August 7, 2012*

**measurments**

which has the least value? 3130 L+38126 cl+ 3403 ml 394 kl+ 1425 Kl+ 490L please show work!

*August 7, 2012*

**7th grade math**

nevermind i figured it out

*July 26, 2012*

**7th grade math**

1. Substitute: Ms.Kubagwa is six years younger than Ms. Vea. The sum of there ages is 52 years. I HAVE NO CLUE WHAT TO DO HERE!! 2.Ms.starbrowski has four more pens than Mr.Dukeman. Together they have 34 pens. How many pens does Ms.Starbrowski have? *Please explain how you ...

*July 26, 2012*

**Math**

a farmer wants to fence in part of her land so that her chickens will have thier own little area. if she only has 28 feet of fence, what is the area of the largest pen that she can build?

*June 7, 2012*

**Social Studies**

the answer is not oregon because i got it wrong on my test...

*May 31, 2012*

**physics ( DENSITY )**

Assume that the density of a human is 1.13 g/cm3. What is the volume of a 51.5 kg person?

*May 31, 2012*

**Algebra 1A**

The temp dropped 17 degrees. What you do to solve it is 0-17. Though it's already a negative 17 so the equation would look like this: 0-(-17)=17. So the temp has dropped 17 degrees.

*May 20, 2012*

**chemistry**

A bond between two sugar molecules is formed by which of the following types of reactions? oxidation-reduction condensation single-replacement double-replacement

*May 16, 2012*

**statistics**

you have requirement that men must be at least 74 in tall and women must be at least 70 in tall. the men height is 69 in +/-2.8 and women mean height is 63.6 +/-2.5. If the requirement s changed so that the tallest 4% of men and women are eligible, what would be the new ...

*May 14, 2012*

**Math**

24 inches is perimeter but what about the ratio (its been a long time since we went over this in school and I have forgoten a lot)

*April 9, 2012*

**Math**

IN a square with each side measuring 6inches what is the ratio of the perimeter to the area? Please show work for this!!

*April 9, 2012*

**Geometry**

Umm I am not sure

*April 4, 2012*

**math**

-7, -4, -1, 2 it is a mathematical sequence

*March 30, 2012*

**geometry**

what is the area of a isosceles trapezoid with legs of 15 feet and bases of 10 feet and 28 feet?

*March 26, 2012*

**Science**

What is the total braking distance for a car that is going 60km/h on wet road (0.10)? The drivers reaction time is 1.5 seconds.

*March 12, 2012*

**calculus**

given the circle x^2+y^2+2x-2y-14=0, find it's intersection with the y-axis. please help me....

*March 11, 2012*

**CHEMISTRY**

I suck at chem

*March 9, 2012*

**algebra**

f the distance the car traveled after applying the brakes equals 20 feet, what does that mean to the officer investigating the accident? (HINT: Let d = 20, bring 20 to the right so that the equation equals zero, identify the coefficients, A, B and C and then use the quadratic ...

*March 5, 2012*

**algebra**

f the distance the car traveled after applying the brakes equals 20 feet, what does that mean to the officer investigating the accident? (HINT: Let d = 20, bring 20 to the right so that the equation equals zero, identify the coefficients, A, B and C and then use the quadratic ...

*March 5, 2012*

**algebra**

f the distance the car traveled after applying the brakes equals 20 feet, what does that mean to the officer investigating the accident? (HINT: Let d = 20, bring 20 to the right so that the equation equals zero, identify the coefficients, A, B and C and then use the quadratic ...

*March 5, 2012*

**algebra**

Use the following to answer the next three questions: the height, h, of a ball t seconds after it is released for a jump shot in a basketball game can be modeled with the equation h = −16t2 + 12t + 8. The rim of the basket is 10 feet high. Which of the following is the ...

*March 5, 2012*

**algebra**

Use the following to answer the next three questions: the height, h, of a ball t seconds after it is released for a jump shot in a basketball game can be modeled with the equation h = −16t2 + 12t + 8. The rim of the basket is 10 feet high. Which of the following is the ...

*March 5, 2012*

**algebra**

Use the following situation to answer the next four questions. The formula for these questions came from the police department. They use this formula to determine the speed at which the car was going when the driver applied the brakes, by measuring the distance of the skid ...

*March 3, 2012*

**math**

Use the following situation to answer the next four questions. The formula for these questions came from the police department. They use this formula to determine the speed at which the car was going when the driver applied the brakes, by measuring the distance of the skid ...

*March 3, 2012*

**math**

Use your graphing calculator to find how many seconds before the projectile hits the ground. Let y1 = −16t2 + 800t, or factor and solve for t algebraically

*March 1, 2012*

**math**

The length of a rectangle is 3 inches more than its width. If the area of the rectangle is 180 square inches, write an equation for the above situation

*March 1, 2012*

**math**

In a large city league, the boys' baseball teams hold a tournament. If there are 40 teams in the league and half of the teams are eliminated in each round of games, how many teams are left after 3 rounds?

*March 1, 2012*

**Math**

Divide 186 marbles between DON and ANDRE so that DON gets twice as many as ANDRE.:(

*February 26, 2012*

**Chemistry**

Cocaine is a non-electrolyte that has a molecular weight of 303.4 g/mole. How many grams must be dissolved in 25.0 mL of Chloroform (density = 1.484 g/mL) to raise its boiling point to 65.5 Celsius? The boiling point of pure Chloroform is 61.2 Celsius. Kb Chloroform = 3.62 ...

*February 26, 2012*

**calculus**

the area of the first quadrant bounded by the y-axis, the line y=4-x, and the graph of y=x-cosx is approximately

*February 26, 2012*

**chemistry**

An aqueous salt solution is formed by adding 11.67 g sodium sulfate (solute) to water (solvent). What mass (in g) of water is used if the freezing point of the solution is -12.9 oF. Kf H2O = 1.86 oC/m I know to use delta T= i*Kf*m I then solve for m. But, then I'm confused...

*February 26, 2012*

**calculus**

the area of the first quadrant bounded by the y-axis, the line y=4-x, and the graph of y=x-cosx is approximately

*February 26, 2012*

**statistics**

THIS WAS MY ANSWER a)Identify the population and the sample. N (population) is ALL phones produced per day n (sample) is 40 random phones from the day’s production b) Is the population parameter in this study known or unknown? Explain. UNKNOWN - Parameter is the numerical...

*February 22, 2012*

**statistics**

A manufacturer of cell phones has decided that an assembly line will be considered to be operating satisfactorily if less than 0.02% of the phones produced per day are defective. To check the quality of a day's production, the company decides to randomly sample 40 phones ...

*February 22, 2012*

**Chemistry**

Can someone confirm the answer for this. I worked it out and got an answer of 85.5 torr. Is this right? Can someone please put the answer to this so I can check. Thanks. That would be helpful.

*February 18, 2012*

**Com arts**

In the Book FareWell to Manzanar. What chapter did momma break her dishes?

*February 14, 2012*

**physics**

A certain projectile is launched with an initial speed Vo. At its highest point its speed is Vo / 6. What was the launch angle?

*February 9, 2012*

**PhysicsIn what direction relative to north must ca**

An astronaut on the planet Zircon tosses a rock horizontally with a speed of 6.65 . The rock falls through a vertical distance of 1.50 and lands a horizontal distance of 8.90 from the astronaut. What is the acceleration of gravity on Zircon?

*February 9, 2012*

**PhysicsIn what direction relative to north must ca**

Two canoeists start paddling at the same time and head toward a small island in a lake, as shown in the figure . Canoeist 1 paddles with a speed of 1.60 at an angle of 45 north of east. Canoeist 2 starts on the opposite shore of the lake, a distance of 1.5 due east of canoeist...

*February 9, 2012*

**Algebra**

In order to solve this problem, you would have to distribute the negative (- sign) to the (x-2), making the problem x+2-x+2. The two x's would cancel out, therefore making the final answer 4.

*February 6, 2012*

**math**

The answer would be 7x+3y. The reason for this, is because you have to combine the "like" terms (8x goes with -x; -2y goes with 5y).

*February 6, 2012*

**science**

you get on the beach ball and float

*January 25, 2012*

**Physics**

2.5 m/s

*January 18, 2012*

**math**

NEVER MIND! THANK U!!!:)

*January 17, 2012*

**math**

how do u get 24

*January 17, 2012*

**math**

10z-8+2z-16=36 z=?

*January 17, 2012*

**English**

Is it "'un-acknowledged" or "unacknowledged" or neither of these and there is no such word? (I'm trying to write an essay.) Thanks!

*December 13, 2011*

**English/Commas**

Yes, I seem them now and have a better understanding. Thank you!

*December 13, 2011*

**English/Commas**

Okay, thank you! Are all of the commas placed in the correct spots?

*December 13, 2011*

**English/Commas**

Here is another try. I am not sure about number two, if it is, I added another comma in front of the name. 1. As I understand it, John Pearson, has lived in Winston Colorado, a small almost unknown tourist resort since August 10, 2002. 2. I have some roses planted, Mrs. Roper...

*December 13, 2011*

**English/Commas**

I was asked to put all the commas in the correct place for each sentence. I am unsure about some. Are these correct? Thanks 1. As I understand it, John Pearson has lived in Winston Colorado, a small almost unknown tourist resort since August 10, 2002. 2. I have some roses ...

*December 13, 2011*

**English/Grammar**

I was told to write a paragraph with less than 100 words. The paragraph below has 94 words. I will only receive points if there are NO grammar or punctuation errors. Are there any errors in my paragraph below? Thanks. The new library being constructed costs over forty million ...

*December 8, 2011*

**Calc 3**

Find the volume of the wedge-shaped region contained in the cylinder x^2 + y^2 = 1 and bounded above by the plane z = x and below by the xy-plane. The picture is a cylinder with a diagonal plane through it creating a wedge. Thanks! ;)

*November 29, 2011*

**chemistry**

Calculate the pH of an aqueous solution containing 1.6 x 10-2 M HCl, 2.0 x 10-2 M H2SO4, and 1.8 x 10-2 M HCN.

*November 19, 2011*

**Physics**

A 822 kg car accelerates from rest to 101 km/h in 1.15s. What change in momentum does the force produce?

*November 16, 2011*

**Sentences**

Are my sentences correct with the following directions? (Sentences below directions) Using California as a topic, number and write one example of each of the following: 1. A completely correct simple sentence with an appositive in it. 2. A sentence with redundant language. ...

*November 3, 2011*

**English**

Thank you!

*October 27, 2011*

**English**

Thank you! I'm telling your Marge, if Carol has another party this month I will have to buy a new dress and a new pair of shoes, the kind i can also wear for other occasions. When i saw her last night she said she was too tired for another social even, another evening of ...

*October 27, 2011*

**English**

INSERTS COMMA'S AS NEEDED IN THE FOLLOWING PARAGRAPHS: I'm telllling you Marge if Carol has another party this month i will have to buy a new dress anda new pair of shoes the kind I can also wear for other occasions. WHen i saw her last night she said she was too tired...

*October 27, 2011*

**Math**

For what values of x will the angle be acute? (2x-6)degrees

*October 25, 2011*

**Math**

TriangleFGH is an obtuse triangle. The greatest angle in the triangle has a measure of (6d)degrees. What are the possible values of "d"?

*October 25, 2011*

**Math**

I think this may be right. 1,1,4,3,9,6,16,10,25,15,36,21,49,28,64,36,etc 1+2=3 3+3=6 6+4=10 10+5=15 15+6=21 21+7=28 28+8=36

*October 25, 2011*

**Math**

using the numbers 2.3.4.and 6once to make each equation correct. __+{___x___}x___=30

*October 25, 2011*

**math**

The stopping distance of a car traveling 25mph is 61.7ft, and for a car traveling 35mph it is 106ft. The stopping distance in feet can be described by the equation y=ax^2 + bx + c, where x is the speed in mph. Find the values of a and b.

*October 21, 2011*

**Math**

Yes it is reasonable because 293=290 and 44=50 and 290 - 40 _____ 250 = means rounds to

*October 10, 2011*

**math**

use the given advertisement to determine the missing part in each ratio. Write the two unit rates. yogurts 4 packs equals $5.00 question: 4 yogurts equals $5.00 total = 1 yogurt equals $1.25 each = what amount can you get for $1.00

*October 6, 2011*

**math**

Use the givem advertisement to determine the missing part in each ratio. write the two unit rates. yogurt 4 packs/$5.00 =4 yogurts/$5.00=1 yogurt/?=?/$1.00

*October 6, 2011*

**chemistry**

A solid substance P is soluble in water (1g/ 100mL) at 25°C and 10g/ 100mL of water at 100°C. You are given a sample that contains 10g of P and 2g of impurity G. Describe the procedure to purify P if G is insoluble in water.

*October 6, 2011*

**chemistry**

sorry, i actually posted it by accident. thank you for your help

*October 6, 2011*

**chemistry**

A solid substance P is soluble in water (1g/ 100mL) at 25°C and 10g/ 100mL of water at 100°C. You are given a sample that contains 10g of P and 2g of impurity G. Describe the procedure to purify P if G is insoluble in water.

*October 6, 2011*

**chemistry**

A solid substance P is soluble in water (1g/100 mL) at 25 degrees and 10g/100mL of water at 100 degrees. You are given a sample that contains 10 g of P and 2g of impurity G. If G has the same solubility as P, describe how you could purify P.

*October 6, 2011*

**Arrays and Expanded Algorithm**

how do you 4th grade kids do arrays and an expanded algorithm math fpr homework

*September 22, 2011*

**literary**

what literacy device is used in the statement? former indonesian president suharto was sometimes referred to as a puppet master.

*September 21, 2011*

**math HELP!!**

help

*September 20, 2011*

**math**

writing numbers in standard form ex 624

*September 17, 2011*

**Math 6**

What is the expanded form using powers of 10 and using exponents of 7,375?

*September 8, 2011*

**Math 6th grade**

42.1

*September 6, 2011*

**MAth**

ONE DIRECTION

*August 31, 2011*

**Mathematical Applications**

For the life of me, I cannot understand this question! Will someoe please help me, explain to me how I can solve it, PLEASE! Q- a party supplies store recorded net sles of $423,400 for he year.The store's beginnng iventory at retail was $105,850 andits ending inventory at ...

*August 28, 2011*

**5TH grade math**

estimate each sum or differnce. 7.4 + 3.1+ 9.8 How do I do this?

*August 25, 2011*

**Math**

A box in the shape of a rectangular prism has a volume of 56 cubic inches. If the length of each side is multiplied by 2, what will be the approximate voume of the resulting box?

*August 25, 2011*

**math**

thousands

*August 24, 2011*

**Math**

coach byrd gives 7 lessons a day . how many days will it take him to give 100 lessons? please HELP!!!

*August 15, 2011*

**math**

The length of the smaller rectangle at the right is 1 inch less than twice its width. Both the dimensions of the larger rectangle are 2 inches longer than the smaller rectangle. The area of the shaded region is 86 square inches. What are the dimensions of the smaller rectangle?

*August 4, 2011*

**Nassau**

The length of the smaller rectangle at the right is 1 inch less than twice its width. Both the dimensions of the larger rectangle are 2 inches longer than the smaller rectangle. The area of the shaded region is 86 square inches. What is the area of the larger rectangle?

*August 4, 2011*

**algebra**

I don't understand how to do this problem. Please help! Find an exponential function of the form f(x) = bax that has a y-intercept of 2 and passes through the point (2, 98). For example, if the equation is f(x) = 2(7)x respond by entering the answer as 2(7)^x

*May 19, 2011*

**math**

the washing ton monument is 555ft tall. which is closest to its height? i know the answer is 180 but i do not know how to show work for it!!!HELP!!!

*May 8, 2011*

**science**

How does your body keep from being crushed from air pressure?

*May 3, 2011*

**algebra**

I need help understanding how to do these problems. Thanks! 1) Find the value(s) that would be left out of the range of f. If there is more than one value separate them by commas. Leave fractional answers in fraction form. If there are no values left out of the range respond ...

*May 3, 2011*

**algebra**

How would you go about solving this? Im totally confused. Thanks! Find the value of k such that the graph of f contains the given point. Write k as a simplified fraction if it is not a whole number. f(x) = kx^3 - 3x^2 + kx + 3; (-1, 8)

*April 12, 2011*

**chemistry**

Calculate how many grams of Cu are needed to produce 15L of NO(g). Please help

*April 11, 2011*

**Chemistry**

How many mL of Water are made from 4 moles of HNO3?

*April 11, 2011*