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For the alcohol functional group, why is the "H" not acidic and the "OH" not basic?

16 years ago

What were the goals of "The Big Four"?

16 years ago

Why were Wilson's 14 Points not accepted by other members of the paris peace conference?

16 years ago

Please help i would highly appreciate it

16 years ago

Why would people choose an extremist form of government(either ultraliberal or ultraconservative)to rule over them?

16 years ago

If you have a graph with the x-axis as the days of the month, and the y-axis as stock price.... Then, how to do you figure out the percentage drop in stock price for each week?

16 years ago

What are the products of nitrogen dioxide and methane?

16 years ago

what effect does a catalyst have on.. a) energy of the reactants b) enthalpy change of the reaction

16 years ago

Explain open and closed system with respect to equilibrum.

16 years ago

explain why a strong acid or base can denature an enzyme explain how varying pH influenced the rate of the catalase reactions and explain why. explain the influence of temperature in excess of 50 degrees C on the influence of most enzyme controlled reacti...

15 years ago

0.2 in extended form

15 years ago

25 ml HCl x 1L/1000mL x .200HCl/1L = .005 mol HCl. Using the balanced equation from this, how many moles of NaOh will you need to completely neutralize the HCl?

14 years ago

According to the rational root theorem, which is not a possible rational root of x3 + 8x2 x 6 = 0?

14 years ago

Factor x3 4x2 3x + 18 = 0, given that 3 is a zero.

14 years ago

Which binomial is a factor of f(x) = x4-27x2-14x + 120?

14 years ago

Which binomial is a factor of f(x) = x4 - 27x2 -14x + 120? (x-4) (x-2) (x + 5) (x + 6)

14 years ago

what events led to u.s. expansion during 1895-1920?

14 years ago

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? This the ans 2 hours and 24 minutes but how did they work it out?

14 years ago

A 86.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 5.50 m. What is the work done on the man by each of the following forces?

14 years ago

An abiotic factor that starts with c and the clue is soil type. So what is a soil type that starts with C?

14 years ago

How many possible outcomes are there for 15 coins tossed simultaneously?

14 years ago

Express the given quantity in a single logarithm. ln(a + b) + ln(a - b) - 2 ln c

14 years ago

A hawk flies in a horizontal arc of radius 15.7 m at a constant speed of 3.8 m/s. Find its centripetal acceleration. Answer in units of m/s 2 006 (part 2 of 2) 10.0 points It continues to fly along the same horizontal arc but increases its speed at the rate...

13 years ago

5. Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. a. What is the probability that a randomly selected exam will have a score of at least 71? b. What percentage of exams will have scor...

13 years ago

50.0mL of 0.01M Ba(OH)2 is added to 150.0mL of 0.01M HNO3. What is the new pH of the solution?

13 years ago

which will become a buffer in 1L of H2O? a) 0.3 mole KOH & 0.3 mole HBr b) 0.5 mole NH3 & 0.5 mole HCl c) 0.2 mole NaCl & 0.3 mole HCl d) 0.2 mole NaOH & 0.2 mole HBr e) 0.4 mole HC2H3O2 & 0.2 mole NaOH I think that the answer is e. Is that correct?

13 years ago

0.200 moles of NaF are added to 1L 2.0 molar HF. What is the pH? a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00

13 years ago

50.0mL of 0.1 molar NaOH is added with 50.0mL of 0.1 molar CH3COOH. The Ka = 1.8*10^-5. what is the pH of the solution? a) 7.00 b) 9.22 c) 4.77 d) 8.22 e) 5.78 I think that the answer is d. Would i be safe in saying that?

13 years ago

0.200 moles of NaF are added to 1L 2.0 molar HF. The Ka = 7.2*10^-4. What is the pH? a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00 I got 4.14. pH = -log(Ka)-log([NaF]/[HF]) ==> pH = -log(7.2*10^-4)-log(.2/2) ==> pH = 4.14 Or did I do something wrong?

13 years ago

find all the zeros of each function. 1. f(x)=2x^4-13x^3-34x^2+65x+120 2. f(x)=4x^4+19x^2-63

13 years ago

List all possible rational zeros of each function. f(x)=4x^5+4x^2-9 Find all rational roots of each function f(x)=2x^3+x^2+8x+4

13 years ago

Seawater has a bulk modulus of 2.34×109 N/m2. Its density at 5°C is 1030 kg/m3. What is the speed of sound through seawater at this temperature?

13 years ago

Sally Sue is atop a 10.0 m high platform where she will drop an apple straight down. On the ground below, and 20.0 m (horizontally) away, Betty Lou will shoot an arrow at the apple. If Betty's arrow has a release speed of 25.0 m/s, at what angle must she...

13 years ago

A trough has a trapezoidal cross section with a height of 5 m and horizontal sides of width 2.5 m and 5 m. Assume the length of the trough is 14 m. How much work (in joules) is required to pump the water out of the trough (to the level of the top of the t...

13 years ago

An ice skater slides (without pushing) across a frozen pond for 25.0 m before coming to a stop. If the coefficient of kinetic friction is 0.050, how fast was the skater initially moving?

13 years ago

A 90.0 kg block and a 40.0 kg block are connected by a rope that passes through two (frictionless, massless) pulleys as shown. When released, what is the acceleration of the larger block? What is the tension in the rope?

13 years ago

A 12.0 kg block sits on a frictionless table. On top of this block is placed a 5.00 kg block. The coefficient of static friction between the two blocks is 0.70. a) What is the maximum force that can be applied horizontally to the 5.00 kg block before it s...

13 years ago

Mass 1 and mass 2 are connected as shown by a massless, non-stretch rope that passes over a massless, frictionless pulley. The masses are on inclines which have friction. When the angles of the string are as given, mass 1 experiences an acceleration up th...

13 years ago

A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. The coefficient of kinetic friction between the two blocks is 0.300, and the surface on which the 8.00- kg block rests is frictionless. A constant horizontal force of magni...

13 years ago

Consider a spider walking from the top of a (stationary) beach ball. (Let that angular position = 0 O .) The spider finds it loses its grip when the normal force between it and the surface is less than 1/2 of its weight. At what angle does this slipping b...

13 years ago

A car with fuzzy dice hanging from the rear view mirror by a single string drives along at a constant 25.0 m/s. a) If the dice have a mass of 0.030 kg, what is the angle of the string (relative to vertical)? b) What is the tension in the string? c) As the...

13 years ago

Starting from rest, a 6.70 kg object falls through some liquid and experiences a resistive (drag) force that is linearly proportional to the velocity of the object. It's measured that the object reaches half its terminal speed at 4.50 s. a) What is the te...

13 years ago

Assume the Earth is a perfect sphere of radius 6,400 kilometers. Find the weight of a 75.0 kg person at the North pole. Find the weight of this same person at the equator. (You don't need to use Newton's Law of Gravitation but you do need to analyze the r...

13 years ago

The Hubble Space Telescope (HST) has recorded evidence of a black hole at the center of the M87 galaxy. Using Doppler data, it's been measured that matter is orbiting the center of this galaxy at an orbital speed of 7.5x10 5 m/s, out at a radius of 5.7x10...

13 years ago

A popular carnival ride consists of a large, round room that rotates fast enough that any person standing against the wall will be stuck there, even as the floor is dropped away from their feet. The coefficient of static friction between the person and th...

13 years ago

In the Daytona 500 car race in Daytona, FL, a curve in the oval track has a radius of 316 m (near the top of the curve) and is banked at 31.0 O . a) What speed would be necessary to make this turn if there was no friction on the road? b) If the coefficien...

13 years ago

A 125 kg flatbottomed boat is floating along at 5.0 m/s, headed east. Sally Sue, standing at one end of the boat, starts to walk at 2.0 m/s, also to the east. If Sally’s mass is 65 kg, what is the speed of the boat as she walks along?

13 years ago

A 140 g, 90.0 mph fastball comes across the plate very nearly horizontally and is batted at 90.0 mph at a 30.0 O angle (above the horizontal) toward center field. (a) Determine the impulse (in N.s) acting on the ball. (b) If the impact time is 0.00080 s,...

13 years ago

place parenthesis so answer = 14. 2x2+3 to 2nd power-4+3x5.

13 years ago

Convert r=1+3sin2x from a polar equation to a rectangular equation.

12 years ago

Given the one point function (3,9) (in other words f(3)=9) Identify the following transformations f(2x) -3(f(x-4))+1 f(5x+3) 4f(-x)

12 years ago

Find parametric equations for the line that is perpendicular to the plane 2x-y+3z=7 and intersects the plane when x=1 and y=1.

12 years ago

Find the parametric equations for the line that contains the point (3,1,-4) and is parallel to the line r(t)=(1+2t)i+(-3-t)j+(5+5t)k

12 years ago

For what values of z will (2-z)-y = 0 4x+(1+z)y = 0 have an infinite number of solutions.

12 years ago

Show that ln(4+x) is the sum of its Taylor Series for -2 <= x <= 2.

12 years ago

integers of 34 Add= Sub.= div.= multiply=

12 years ago

How many sulfate ions are there in 2.500 mL of 5.0 x 10-15 moles of Cr2(SO4)3?

12 years ago

The denominator of a fraction is four more than twice the numerator. If both numerator and denominator are increased by six, the simplified result is 7/13. Find the original fraction

11 years ago

Find the scalar equation of a plane that is perpendicular to plane r=(-2,1,3)+s(0,1,1)+t(-1,0,3) and also intersects it along the line (x-3)/2=(y+1)/-3,z=1

11 years ago

State the cartesian equations of two lines that make angle of 60 degrees with the line r=(1,3)+s(1,1)

11 years ago

A and B weigh 156 pounds. A and C weigh 171 pounds. How much do they each weigh if the total weight is 255 pounds?

11 years ago

Differentiate: y = 3/(1-6x^4)

10 years ago

The sum of two numbers is 83. The difference of the two numbers is 24. Find the two numbers.

9 years ago

The sum of two numbers is 83. The difference of the two numbers is 24. Find the two numbers.

9 years ago

1) Which of the following is a characteristic of RNA splicing in Eurkaryotes? a) Exon/intron boundaries are typically characterized by a 5' GU splice junction and a 3' AG splice junction. b) After splicing occurs, the U1, U2, U5, U6 snRNP complex removes...

9 years ago

A mass hung from a spring stretches the spring by 11 cm when the mass is resting at its equillibrium position. What will be the frequency of oscillation of this system if the mass is put in motion?

9 years ago

What is the maximum velocity of a spring oscillator with a mass of 0.7 kg and a spring constant of 74 N/m that is released from rest at a position of x = 0.1 m?

9 years ago

A simple harmonic oscillator has a frequency of 2.05 Hz. What will be its amplitude of oscillation if it's started from its equillibrium position with a velocity of 1.9 m/s? Express your answer in m to three significant digits.

9 years ago

With what frequency would you have to push a child on a swing that had supporting chains that were 2.3 m long? Express your answer in Hz to 3 significant digits.

9 years ago

A certain pendulum on Earth has a period of 1.6 s. What would be the period of this pendulum if it were taken to another planet that had 1.75 times the mass of the Earth and 2.5 times the Earth's radius? Express your answer in seconds to three significant...

9 years ago

think about the various conflicts in dragonwings. identify and describe one event from the novel that represents a cause and effect relationship that creates conflict. explain the effect the conflict has on other characters in the story.

9 years ago

Riddle: It’s 7:00 am. You are asleep and there is a sudden knock on the door. Behind the door are your parents, who came to have breakfast. In your fridge: bread, milk (pasteurised!), juice, and a jar of jam. To answer, what will you open first?

6 years ago

Help Please! A spaceship with fuel is initially at rest at point CG. Fuel is ejected at the back to propel the payload to the forward direction. After a long time, the total fuel ejected out has a mass of 106 pounds, and center of gravity moving backward...

3 years ago

Help Please! Two cars in opposite directions were going at 50 mph before a collision. They had a head on inelastic collision, i.e. the two cars stuck together afterward. The common speed of the combined piece right after the collision is 20 mph. The mass...

3 years ago

So in class we threw an egg into a blanket and it didn't break. What would be the cause? Speed, mass, momentum, or force. It's force, right? In the class demo of throwing an egg, the egg did not break since the _____ was tiny.

3 years ago

Please Help!!! A cyclotron produces a beam of charged particles useful in medicine. The cyclotron accelerates charged particles in circular path, which allows for longer acceleration path than linear accelerator. A proton is in a cyclotron with an angular...

3 years ago

what is the value of 4^ 2 - 2 (3 x 5 -1)?

3 years ago

Thank you so much your a life saver have a great evening!!

16 years ago

PLEASE HELP I AM IN DANGER OF FAILING

16 years ago

thank you

16 years ago

oh sorry x3-4x2-3x+18=0

14 years ago

x3 + 8x2-x-6 = 0?

14 years ago

thank you this make way more since now

14 years ago

yeh but my homework has +-2 and +-1 as answers abd i can only choose one

14 years ago

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? This is the ans. 2 hours and 24 minutes But how they work it out?

14 years ago

I understand but you didn't put 10(initial height) into any of the equations?

13 years ago

wouldnt the "1"in the 1+.... in the 4th step become r^2 when you multiply both sides by r^2.

12 years ago

Thanks a lot for your help

12 years ago

The z is supposed to be an upside down y (thats the best description I can think of).

12 years ago

First put the perpendicular line equation into y=mx+b form. Your first step should be to subtract the 10y from both sides. Then using the y = mx + b equation, you know the slope of the parallel line. Your line is perpendicular to the m value in the new eq...

12 years ago

Is 16.6 a rational number

11 years ago

39.9 mi/h

10 years ago

thank you Amanda Fire

9 years ago

I need an answer to this also.

9 years ago

your right

9 years ago

The answer is A

9 years ago

lilganster and derp are right. I got 100%

9 years ago

Its address bar.

6 years ago

8 Black Marbles & 22 White Marbles

5 years ago

1. While Black Americans were granted rights, states like Texas made it difficult 2. pass the Reconstruction Amendments 3. The Civil War disrupted trade 4. enslaved Black People 5. The number of slaves 100% It's also on the intro page if you wanna double...

1 year ago

1. It finally guaranteed 2. More economic opportunities 3. Texas leaders felt forced 4. After slavery was abolished 5. expanded use of the Texas Rangers 100% If you want to double check look at the intro page! ❤

1 year ago