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Tracy
Questions and answers by
Tracy
, page 3
Questions (416)
At -15.0 C, what is the maximum mass of fructose (C6H12O6) you can add to 3.00 kg of pure water and still have the solution
4 answers
2,478 views
The boiling point of an aqueous solution is 102.16 C. What is the freezing point?
Dr. Bob, If you happen to answer this question,
3 answers
993 views
In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure.
2 answers
1,125 views
What is the magnitude of buoyant force acting on a 720 cm^3 toy submarine floating in fresh water? (D_water =1 g/cm^3)
1 answer
419 views
At the lowest point in its swing, a 2.5 kilogram pendulum bob has 40 Joules of kinetic energy. How high will its swing when it
2 answers
520 views
A person heats up a can of soup on a stove. If he does 250 Joules of work on the soup by stirring it as the burner adds 1675
1 answer
430 views
A lukewarm bottle containing 800 grams of water is placed in a refrigerator. How many calories of heat must be removed from the
1 answer
398 views
A lukewarm bottle containing 800 grams of water is placed in a refrigerator. How many calories of heat must be removed from the
1 answer
393 views
Which of the following statatements is correct?
a. Thermos bottles keep food warm by combating heat loss through convection. b. A
1 answer
365 views
Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at
3 answers
478 views
Did I answer this equilibrium question correctly?
2CO(g) + O2(g) <-> 2CO2(g) 1) How will increasing the concentration of CO shift
5 answers
5,292 views
At 389K, this reaction has a Kc value of 0.0682. 2X(g) + 2Y(g) <-> Z(g) .. Calculate Kp at 389K. Kp=
this is what I did.. can
4 answers
3,763 views
For A+2B <-> 2C and Kc = 2.13
For 2C <-> D and Kc = 0.254 Calculate the value of equilibrium contant for the reaction D <-> A+2B
4 answers
1,291 views
Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at
1 answer
442 views
Which of the following statatements is correct?
a. Thermos bottles keep food warm by combating heat loss through convection. b. A
1 answer
421 views
Which of the following statatements is correct?
a. Thermos bottles keep food warm by combating heat loss through convection. b. A
1 answer
412 views
A lukewarm bottle containing 800 grams of water is placed in a refrigerator. How many calories of heat must be removed from that
1 answer
450 views
It takes 1110 calories of energy to melt a 185 gram lump of lead. What is lead's latent heat of fusion?
1 answer
454 views
If someone could please be kind enough to see me through this problem?
Calculate the value of Kp for the equation C(s) + CO2(g)
6 answers
551 views
Consider this system at equilibrium.
A(aq) <-> B(aq) Delta H = +750 kJ/mol .. What can be said about Q and K immediately after an
4 answers
6,167 views
In which direction will the net reaction proceed.
X(g) + Y(g) <==> Z(g) .. Kp = 1.00 at 300k for each of these sets of initial
4 answers
7,653 views
Which of the following statatements is correct?
a. Thermos bottles keep food warm by combating heat loss through convection. b. A
2 answers
485 views
Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at
1 answer
478 views
Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at
2 answers
560 views
A person heats up a can of soup on a stove. If he does 250 joules of work on the soup by stirring it as the burner adds 1675
2 answers
1,165 views
A cylinder contains 0.1 cubic meters of gas at atmospheric pressure. This gas is allowed to expand until its pressure drops to
1 answer
349 views
A spring and block is set up on frictionless tabletop. The 30N/m spring is compressed 16 centimeters and released. What is the
1 answer
309 views
Use the first law of thermodynamics to determine the amount of heat change, Q, and whther it was added to or removd from the
1 answer
392 views
A cylinder contains 0.1 cubic meters of gas at atmospheric pressure. This gas is allowed to expand until its pressure drops to
1 answer
371 views
Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at
1 answer
483 views
A spring and block is set up on frictionless tabletop. The 30N/m spring is compressed 16 centimeters and released. What is the
1 answer
308 views
What is the magnitude of buoyant froce acting on a 720 cm^3 toy submarine foating in fresh water? (d water=1 g/cm^3)
1 answer
359 views
Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at
1 answer
483 views
Calculate the magnitude of the torque produced by two 25N forces that are 3m apart and in opposite directions
3 answers
425 views
Which of the following bases is the weakest?
(CH3)2NH , Kb = 5.1 x 10–4 ClO–, Kb = 2.9 x 10–7 SO42–, Kb = 8.3 x 10–13
2 answers
1,265 views
Find the distance to the horizon @ 32,000 feet.
3 answers
390 views
A simple pendulum 1.50 m in length has a 500-g putty ball as an end bob. The pendulum is pulled aside 60° from the vertical and
3 answers
532 views
A Spanish galleon is about to be boarded by bloodthirsty pirates in the shallows of a Caribbean island. To save a box of
2 answers
552 views
A Spanish galleon is about to be boarded by bloodthirsty pirates in the shallows of a Caribbean island. To save a box of
1 answer
502 views
Samuel,a50-year-old psychologist, claims that he is a victim of"revolving door syndrome" What is Samuel's problem?
1 answer
392 views
What is construct a 95 percent confidence interval about the sample mean N= 11?
1 answer
294 views
A rifle is aimed directly at the bull's eye of a target 50m away. If the bullet speed is 350 m/s, how far below the bull's eye
2 answers
998 views
An arrow is shot horizontally from a cliff at 15 m/s land 30 m away. How high is the cliff?
4 answers
2,183 views
An arrow is shot horizontally from a cliff at 15 m/s land 30 m away. How high is the cliff?
2 answers
698 views
A rifle is aimed directly at the bull's eye of a target 50m away. If the bullet's speed is 350 m/s, how far below the bull's eye
5 answers
5,466 views
How do you show a car constant speed
Horizontal line or vertical
1 answer
313 views
if the mass of a metal is 127.70 grams, what is number of moles on the metal in the cube?
1 answer
426 views
A group medical practice has 40,000 patients. Charts vary in thickness from 1/4 to 1 inch thick. The average of all charts is
4 answers
1,303 views
How are we able to determine that jupiter is mostly methane gas and that the surface of the sun is mostly He and H? can anyone
1 answer
403 views
a volume of 122mL of argon, Ar, is collected at 500 degrees C and 758 torr. what does this sample weigh?
2 answers
490 views
a.) At equilibrium, the molar concentrations for reactants and products are found to be [I2] = 0.50 M,[Cl2] = 0.60 M, and [ICl]
3 answers
1,430 views
The margin of error is:
a. the difference between the point estimate and the true value of the population parameter b. the
1 answer
440 views
It takes Andy and Ben the same amount of time to eat 1 large piece of chocolate. It takes Charlotte 3 more mins than Andy and
1 answer
408 views
It takes Andy and Ben the same amount of time to eat 1 large piece of chocolate. It takes Charlotte 3 more mins than Andy and
1 answer
453 views
If 15g of NaOh is dissolved in 285 g of water, calculate the following. Assume the density of the solution is 1.06 g/cc.
a)
3 answers
797 views
If the population standard deviation is � � 8, how
large a sample is necessary to have a standard error that is: a. less than 4
1 answer
384 views
I need help with this these two problem PLEASE!!!
For a population with a mean of μ � 80 and a standard deviation of � � 12,
2 answers
666 views
Explain why using the t statistic may be an appropriate alternative to using a z-score
2 answers
823 views
In a class of seven students, a teacher spins a seven-sectored spinner (with equal-sized sectors) to determine which students to
4 answers
865 views
From a set of eight marbles, five red and three white, we choose one at random. What are the odds in favor of choosing a red
3 answers
1,203 views
A spinner containing 8 numbers is spun. What is the probability of the event that the spinner
A.) lands on an odd number?
2 answers
578 views
An independent-measures research study compares three treatment conditions with a sample of n = 10 in each condition. The sample
1 answer
1,271 views
Calculate SP (the sum of products of deviations) for the
following scores. Note: Both means are decimal values, so the
2 answers
1,761 views
Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give
1 answer
318 views
Consider the following ANOVA experiments. (Give your answers correct to two decimal places.)
(a) Determine the critical region
1 answer
399 views
How do you find the p-value, on a problem like below.
The corrosive effects of various soils on coated and uncoated steel pipe
4 answers
438 views
Use the following table to answer the questions. (Give your answers correct to two decimal places.)
x 1 1 3 3 5 5 7 7 9 9 y 3 2 6
1 answer
721 views
Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give
1 answer
338 views
Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.)
Ha: ó1 >
1 answer
374 views
Find the 95% confidence interval for the difference between two means based on this information about two samples. Assume
6 answers
654 views
Use the following table to answer the questions. (Give your answers correct to two decimal places.)
x 1 1 3 3 5 5 7 7 9 9 y 3 2 6
1 answer
619 views
Consider the following ANOVA experiments. (Give your answers correct to two decimal places.)
(b) Determine the critical region
1 answer
496 views
Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give
1 answer
325 views
Find the value of t for the difference between two means based on an assumption of normality and this information about two
4 answers
354 views
Find the value of t for the difference between two means based on an assumption of normality and this information about two
1 answer
326 views
Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give
5 answers
511 views
The population (in millions) and the violent crime rate (per 1000) were recorded for 10 metropolitan areas. The data are shown
4 answers
971 views
Consider the following ANOVA experiments. (Give your answers correct to two decimal places.)
(a) Determine the critical region
1 answer
389 views
In a survey of families in which both parents work, one of the questions asked was, "Have you refused a job, promotion, or
4 answers
1,400 views
Use the following table to answer the questions. (Give your answers correct to two decimal places.)
x 1 1 3 3 5 5 7 7 9 9 y 3 2 6
2 answers
934 views
Use the following table to answer the questions. (Give your answers correct to two decimal places.)
x 1 1 3 3 5 5 7 7 9 9 y 3 2 6
6 answers
756 views
Consider the following ANOVA experiments. (Give your answers correct to two decimal places.)
(a) Determine the critical region
1 answer
400 views
Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.)
Ha: ó1 >
1 answer
365 views
Consider the following ANOVA experiments. (Give your answers correct to two decimal places.)
(a) Determine the critical region
4 answers
530 views
Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.)
Ha: ó1 >
3 answers
1,087 views
The population (in millions) and the violent crime rate (per 1000) were recorded for 10 metropolitan areas. The data are shown
9 answers
505 views
Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.)
Ha: ó1 >
5 answers
943 views
Use the following table to answer the questions. (Give your answers correct to two decimal places.)
x 1 1 3 3 5 5 7 7 9 9 y 3 2 6
4 answers
462 views
An olympic sprinter can run 100yd in 9.0s. At the same rate, how long would it take the sprinter to run 100m?
4 answers
1,879 views
A 120m cable TV tower casts a 96m shadow. Find the height of a nearby telephone pole that cast a 16m shadow.
2 answers
477 views
You received an email from Carl the operations manager from the California Container division. They produce packaging for cell
1 answer
419 views
A hot-air balloon is rising upward with a constant speed of 4.00 m/s. When the balloon is 4.77 m above the ground, the
2 answers
514 views
A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 75.5 m/s2
4 answers
5,248 views
The sum of four consecutive integers is decreased by 30, the result is the fourth integer. Find the four integers.
1 answer
358 views
-2w-3+3(w-4)-5(w-6)
1 answer
445 views
2w-3+3(w-4)-5(w-6)
4 answers
353 views
0.05(0.3m+35n)-0.8(0.09n-22m)
1 answer
293 views
8(v-8)-2v=-28
1 answer
266 views
y=3/4x-1 write equation for a line parallel to the given line passing through (4,0)
4 answers
448 views
4x-3y=-6 finding the x and y intercept line based on a equation in standard form
1 answer
353 views
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