Ask a New Question

Questions and answers by

Jen

Questions (1,135)

Suppose you have a strong peak at 2230 cm–1. What is the wavelength of the radiation that was absorbed?
1. 2 answers
2. 1,912 views
Why is it possible to use melting point to distinguish the different stereochemistry of theproducts? (Hint: what is the
1. 1 answer
2. 462 views
Assume the solubility of benzoic acid in ice-cold water is 1.70 g/L and the solubility of benzoic acid in hot water is 68.0 g/L.
1. 2 answers
2. 1,052 views
A mixture of two compounds, A and B, was separated by extraction. After the compounds were dried, their masses were found to be:
1. 1 answer
2. 1,146 views
A student needed to determine the percent composition of a mixture that contained fluorene and benzoic acid. The student took
1. 2 answers
2. 701 views
When 2.25 g of a nonelectrolyte solute is dissolved in 125 mL of water at 22 °C, the resulting solution exerts an osmotic
1. 1 answer
2. 733 views
From a point on a straight road, Nico and Maria are riding bicycles in the same direction. Nico rides at 12mph and Maria rides
1. 4 answers
2. 1,127 views
A block of mass 77.0kg is placed at the top of a frictionless plane that is inclined 46 degrees to the horizontal. The height of
1. 1 answer
2. 487 views
Find the magnitude of the gravitational attraction force that the earth exerts on a 62-kilogram astronaut who is 8.00 X 10^7
1. 4 answers
2. 1,173 views
The liquid in the tube has a density of 1.48 g/cm^3 . The atmospheric pressure is 1.013 X 10^5 newtons per square meter. What is
1. 1 answer
2. 521 views
A wheel is rolling ithout slipping at 487 meters per second to the right on a level surface. the diameter of the wheel is 100
1. 2 answers
2. 585 views
A particle moved along the x axis with a constant acceleration of -85.0 meters per second squared. The initial position of the
1. 2 answers
2. 671 views
A car slowed down at a constant rate from 32meters per second to 3.0 meters per second in 9.0 seconds. What was the distance the
1. 3 answers
2. 499 views
what's the density of a box whose weight is 1648 newtons and whose volume is 2.8 cubic meters? Will it float in a liquid whose
1. 1 answer
2. 704 views
if the pulleys are massless and frictionless and the rope is of negligible mass, and aristotle wanted to raise the 332 newton
1. 1 answer
2. 753 views
A weightless beam rests on two supports. The beam supports a weight of 120 newtons. What are the magnitudes of the forces on
1. 2 answers
2. 1,012 views
A female whose mass is 130 kilograms is standing on a scale in an elevator that has an initial downward velocity of 6 meters per
1. 2 answers
2. 471 views
Trenton struggled as he lifted a 27kg mass vertically a distance of 9 meters in 4minutes with a constant velocity.A-how much
1. 2 answers
2. 563 views
Forces of 1,5,3, and F newtons are applied to a weightless board that rests on a fulcrum. The board doesn't rotate-what's the
1. 0 answers
2. 481 views
a 1462 kilogram block was lifeted vertically at a constant velocity a distance of 0.08 x 10(to the 6th power) meters in
1. 1 answer
2. 482 views
Three forces are applied to a box wrench. find the total torque about the bolt in newton-meters caused by these forces. Is the
1. 1 answer
2. 963 views
The density of an unspecified material is 3.27 g/cm (cubed) . if the mass of a block of this material is 10.9kg, what is the
1. 2 answers
2. 1,406 views
How do you find the total mass of two objects that weigh 111 newtons and 218 newtons?
1. 1 answer
2. 512 views
Galois drove 40kilometers due west in 9hours and then drove 62kilometers due north in 5 hours.What was his dispacement? What was
1. 2 answers
2. 546 views
how do you convert 558 kelvins to degrees Celsius?
1. 3 answers
2. 582 views
an object moving in the positive x direction went from a velocity of 2.5 km/s to a velocity of 8.0 km/s in 6.2seconds. what was
1. 1 answer
2. 408 views
a truck is traveling in a straight line goes 60km in 83minutes. what is its average speed in km per hour?
1. 1 answer
2. 458 views
A Block has a mass of 50.0 kilograms. the coefficient of static friction between the block and the level floor on which it rests
1. 1 answer
2. 713 views
A block is pulled to the right across a alevel surface at a constant velocity of a horizontal force of 16 newtons. what is the
1. 3 answers
2. 697 views
An object moving in the positive x direction went from a velocity of 2.5 km/s to a velocity of 8.0 km/s in 6.2 seconds. What's
1. 1 answer
2. 935 views
I need help please! You have been given 40ml of a 0.6M solution of NaCl and 40ml of a 0.1M solution of KCl. You are also given
1. 1 answer
2. 584 views
what's the pattern for2,3,__, 7, 11, 13, 17
1. 2 answers
2. 458 views
a book having a mass of 1.3kg lies on a shelf 1.8 m above the floors in a room whose ceiling is 2.5 m high. What is the books
1. 0 answers
2. 1,112 views
A 115 mL sample of a 10.0 M ethylene glycol (C2H6O2) solution is diluted to 1.30 L. What is the freezing point of the final
1. 1 answer
2. 1,352 views
Seek power series solution of the given differential equation about the given point x0; find the recurrence relation.(1-x)y'' +
1. 1 answer
2. 581 views
Does adding boiled, deionized water to the titrating flask to wash the wall of the erlenmeyer flask and the buret tip increase,
1. 0 answers
2. 1,357 views
Alonzo applied for a job to be an administrative assistant.He had to take a typing test. His words per minute were translated
1. 1 answer
2. 532 views
A dynamic equilibrium, Ag2CO3(s) <=> 2Ag+(ag) , CO3 2- (ag), what affect does the addition af HCl have on the system? Does it
1. 1 answer
2. 1,874 views
You mix 40.0 g of ethanol (C2H5OH, molecular weight = 46.1 g/mol) and 60.0 g of water (molecular weight = 18.0 g/mol) The
1. 13 answers
2. 1,152 views
Which of the following accurately describes a surplus?Consumer demand for a certain car is below the number of cars that are
1. 3 answers
2. 1,462 views
Lily and Tina went to dinner. When the bill came, Lily discovered that she had only $6. Luckily, Tina had enough money to pay
1. 3 answers
2. 547 views
If the initial volume is 150mL and the final volume is 1L, what is the final pressure?
1. 1 answer
2. 383 views
"Christina Nehring makes allusions to classical myths and 18th and 19th century writers in her essay "Fideltiy with a Wandering
1. 1 answer
2. 792 views
a carpainter made 20 pieces of furniture comprising of 74 legs. stool of 3 legs and chairs of 4 legs. How many chairs and stools
1. 6 answers
2. 544 views
You buy coffee (200.0 ml) served in a styrofoam cup. You are up late working in a chemistry lab, and want to drink the coffee
1. 0 answers
2. 730 views
An astronaut is inside a rocket that is blasting off vertically from the launch pad. You want this rocket to reach the speed of
1. 3 answers
2. 5,799 views
A solution is made by dissolving 0.584 mol of nonelectrolyte solute in 883 g of benzene. Calculate the freezing point and
1. 6 answers
2. 1,355 views
A company produces three types of color TVs: Models X, Y and Z. Each model X requires 2 hours of electronic work and 2 hours of
1. 0 answers
2. 689 views
___A__/__\ B/____\C radius (each side of this equilateral triangle) 0.5 m Three point charges are located at the corners of an
1. 1 answer
2. 940 views
If the heat from burning 5.800 g of C6H6 is added to 5691 g of water at 21 °C, what is the final temperature of the water?2C6H6
1. 13 answers
2. 2,275 views
The density of liquid "A" is 1.80gm/ml, liquid "B" is 1.10 gm/ml and liquid "C" is 1.40 gm/ml. If theses liquids are immiscible
1. 1 answer
2. 767 views
Two friends, Al and Jo, have a combined mass of 171 kg. At an ice skating rink they stand close together on skates, at rest and
1. 0 answers
2. 761 views
A model rocket is shot straight up from the roof of a school. The height at any time t is approximated by the model
1. 1 answer
2. 839 views
A 0.579 kg basketball is dropped out of a window that is 6.22 m above the ground. The ball is caught by a person whose hands are
1. 0 answers
2. 1,086 views
Please explain to me how to get this -- what quadrant tan theta < 0, sin theta < 0 is in.
1. 1 answer
2. 392 views
what quadrant is this in and please explain... sin theta < 0, cos theta > 0
1. 1 answer
2. 436 views
5pi/7 what quadrant is it in???
1. 1 answer
2. 741 views
A 49.4 kg swimmer is standing on a stationary 214 kg floating raft. The swimmer then runs off the raft horizontally with a
1. 1 answer
2. 556 views
A baseball (m = 149 g) approaches a bat horizontally at a speed of 39.8 m/s (89.0 mph) and is hit straight back at a speed of
1. 0 answers
2. 701 views
In the sentence, "Sylvia looks good in her mermaid costume" why is good the correct word used as an adjective, as opposed to
1. 1 answer
2. 550 views
The three-toed sloth is the slowest moving land mammal. On the ground, the sloth moves at an average speed of 0.0330 m/s,
1. 1 answer
2. 1,043 views
A woman on a bridge 77.4 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an
1. 2 answers
2. 972 views
An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up
1. 2 answers
2. 1,278 views
Daniel tosses a ball upwards with an initial velocity of 10.0 m/s. In meters/second, what is the velocity of the ball 1.3
1. 1 answer
2. 495 views
Daniel tosses a ball upwards with an initial velocity of 10.0 m/s. In meters per second, what is the velocity of the ball 1.3
1. 1 answer
2. 505 views
A drag racer starts her car from rest and accelerates at 9.0 m/s2for the entire distance of 60.0 m. What is its speed at the end
1. 2 answers
2. 1,915 views
Records show that deaths occur at the rate of 0.1 per day among patients residing in a large nursing home. If someone dies
1. 0 answers
2. 655 views
The solubility of NH3 in H20 is 518 g/L at a partial pressure of 760.0 torr.1. Calculate the value of the Henry's Law constant
1. 2 answers
2. 628 views
Suppose that fifteen observations are chosen at random from the pdf f_Y(y) = 3y^2, 0<=y<=1. Let X denote the number that lie in
1. 1 answer
2. 916 views
A .1kg mass is located on the line between a 5kg mass and a 10kg mass. It is 4m to the right of the 5kg mass and 6m go the left
1. 0 answers
2. 544 views
How can you experimentally determine the total volume of blood in a human?
1. 1 answer
2. 457 views
Why are your ears at the side of your head and not in front where your eyes are?
1. 3 answers
2. 793 views
A rock thrown with an initial velocity of 35 m/s at an angle of 48° with respect to the horizontal has a range of 963 m on a
1. 1 answer
2. 624 views
Assume that the population of heights of male college students is approximately normally distributed with mean of 72.83 inches
1. 1 answer
2. 671 views
The width of the Confidence Interval is inversely related to the Maximum Error of Estimate. T or F? Why or why not?
1. 1 answer
2. 810 views
Determine the level of the confidence given the confidence coefficient z(α/2) for the following situation:z(α/2) = 1.96
1. 0 answers
2. 581 views
Given a binomial distribution with n = 21 and p = 0.76, would the normal distribution provide a reasonable approximation? Why or
1. 0 answers
2. 439 views
Can genetic mutations also occur within mitochondria and cause diseases? if yes, how common are these diseases?
1. 0 answers
2. 560 views
Hydrogen sulfide is an impurity in natural gas that must be removed.One common removal method is called the Claus process, which
1. 1 answer
2. 2,339 views
Which of the following solutions is the most basic? (a) 0.6 M NH3, (b) 0.150 M KOH, (c) 0.100 M Ba(OH)2. Explain.
1. 1 answer
2. 1,038 views
A set of 50 data values has a mean of 18 and a variance of 4.I. Find the standard score (z) for a data value = 20. II. Find the
1. 1 answer
2. 449 views
Find the z-score for the standard normal distribution where:Area = 0.95 to the left of z
1. 3 answers
2. 2,656 views
What percentage of the area of the standard normal distribution is between z = -1.00 and z = +1.00? How do you know this?
1. 4 answers
2. 2,764 views
3. In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of
1. 2 answers
2. 574 views
In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14
1. 0 answers
2. 703 views
A bag of colored blocks contains the following assortment of colors:red (18), blue (14), orange (20), purple (14), green (10),
1. 1 answer
2. 476 views
Find the mean and standard deviation of the following probability distribution:x 1 2 3 P(x) 0.3 0.5 0.2
1. 1 answer
2. 440 views
x y1 -10.0 2 -20.0 3 -30.0 4 -40.0 5 -50.0 - What would be the slope of this regression line? - Would the correlation between x
1. 1 answer
2. 550 views
In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14
1. 1 answer
2. 524 views
Consider the experiment of simultaneously tossing a fair coin and rolling a fair die. Let X denote the number of heads showing
1. 1 answer
2. 809 views
Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per
1. 0 answers
2. 701 views
Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per
1. 2 answers
2. 2,260 views
You are given the following data.# of Absences Final Grade 0 96 1 92 2 71 3 66 4 60 5 51 A. Find the correlation coefficient for
1. 0 answers
2. 447 views
Three cards are selected, one at a time from a standard deck of 52 cards. Let x represent the number of tens drawn in a set of 3
1. 0 answers
2. 481 views
A. If the correlation coefficient is 0.65, what is the sign of the slope of the regression line?B. As the correlation
1. 1 answer
2. 1,953 views
For the table that follows, answer the following questions:x y 1 1/2 2 1 3 3/2 4 - Would the correlation between x and y in the
1. 3 answers
2. 778 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.First quartile = 57 Third
1. 1 answer
2. 637 views
In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is
1. 11 answers
2. 1,278 views
For a particular sample of 63 scores on a psychology exam, the following results were obtained.First quartile = 57 Third
1. 0 answers
2. 593 views
SAT I scores around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are
1. 2 answers
2. 729 views

Pages

1
2
3
4
5
6
7
8
9
10

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025