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. 1,885 views
Why is it possible to use melting point to distinguish the different stereochemistry of theproducts? (Hint: what is the
1. 1 answer
2. 437 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. 1,003 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. 1,086 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. 658 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. 694 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. 1,085 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. 466 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. 1,118 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. 486 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. 541 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. 623 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. 465 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. 661 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. 719 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. 978 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. 452 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. 530 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. 459 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. 449 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. 918 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. 1,364 views
How do you find the total mass of two objects that weigh 111 newtons and 218 newtons?
1. 1 answer
2. 480 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. 510 views
how do you convert 558 kelvins to degrees Celsius?
1. 3 answers
2. 539 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. 375 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. 421 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. 667 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. 647 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. 904 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. 540 views
what's the pattern for2,3,__, 7, 11, 13, 17
1. 2 answers
2. 443 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. 1,085 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. 1,311 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. 537 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. 1,327 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. 493 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. 1,834 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. 1,109 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. 1,431 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. 519 views
If the initial volume is 150mL and the final volume is 1L, what is the final pressure?
1. 1 answer
2. 349 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. 758 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. 511 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. 685 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. 5,753 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. 1,312 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. 641 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. 898 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. 2,221 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. 717 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. 718 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. 798 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. 1,043 views
Please explain to me how to get this -- what quadrant tan theta < 0, sin theta < 0 is in.
1. 1 answer
2. 375 views
what quadrant is this in and please explain... sin theta < 0, cos theta > 0
1. 1 answer
2. 417 views
5pi/7 what quadrant is it in???
1. 1 answer
2. 717 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. 523 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. 681 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. 526 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. 1,002 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. 930 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. 1,232 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. 452 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. 470 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. 1,876 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. 614 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. 594 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. 872 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. 509 views
How can you experimentally determine the total volume of blood in a human?
1. 1 answer
2. 434 views
Why are your ears at the side of your head and not in front where your eyes are?
1. 3 answers
2. 753 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. 605 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. 625 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. 791 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. 561 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. 411 views
Can genetic mutations also occur within mitochondria and cause diseases? if yes, how common are these diseases?
1. 0 answers
2. 536 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. 2,301 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. 1,009 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. 416 views
Find the z-score for the standard normal distribution where:Area = 0.95 to the left of z
1. 3 answers
2. 2,632 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. 2,723 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. 551 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. 687 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. 458 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. 420 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. 502 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. 502 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. 756 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. 672 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. 2,224 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. 411 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. 442 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. 1,897 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. 712 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. 613 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. 1,232 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. 576 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. 695 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