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Chris
Questions and answers by visitors named
Chris
Questions (1,410)
Why did conflict arise between Henry II and Thomas Becket
27 answers
asked by
Chris
11,827 views
As in an earlier exercise, busy people leave the park according to a Poisson process with rate λ1=3/hour. Relaxed people leave
7 answers
asked by
Chris
7,601 views
Consider three lightbulbs each of which has a lifetime that is an independent exponential random variable with parameter λ=1.
5 answers
asked by
Chris
4,436 views
1. Which of the following choices is a strategy that could help with time management?
A. Spending most of the day on leisure
62 answers
asked by
Chris
30,621 views
Hi, I hope you guys don't mind if I post a couple probability questions.
A child returns a five-volume set of books to a
5 answers
2,166 views
When you enter the bank, you find that there are only two tellers, both busy serving other customers, and that there are no
4 answers
3,937 views
How many Btu's are required to change five pounds of ice at 20°F to water at 160°F?
a. 2,608 Btu’s b. 1,390 Btu’s c. 1,304
5 answers
8,593 views
The mean of Susan's math and science scores is 74 points. The mean of her math and English scores is 83 points. How many more
4 answers
1,532 views
An object A of mass 20kg moving with an initial velocity of 3m/s makes a head on collision with object B mass 10kg moving with a
5 answers
2,650 views
Ammonia (NH3) is formed industrially by reacting nitrogen and hydrogen gases. How many liters of ammonia gas can be formed from
7 answers
4,647 views
if triangle FGH~ to Triangle PQR, FG = 6, PQ = 10 and the perimeter of trinagle PQR is 35 find the perimeter of triangle FGH
5 answers
3,973 views
Karen can be paid in one of two ways for selling insurance policies:
Plan A:A salary of $750 per month, plus a commission of 10%
5 answers
2,801 views
The voltage of the power supply in a AC-DC coupled circuit is given by the function v(t) = 130sin5t + 18, where t is time, in
3 answers
2,119 views
Two tugboats are towing a ship. Each exerts a horizontal force of 5 tons and the angle between their towropes is 90°. What net
3 answers
898 views
The length of a rectangular playground exceeds twice its width by 25 meters, The perimeter of the playground is 650 meters. Find
7 answers
3,298 views
When the temperature is 68°F, the speed of sound in air is approximately 343 meters per second. Approximately how many
37 answers
12,385 views
A regular hexagon is drawn inside of a circle so that each of its vertices touches the circle. The diameter of the circle is 4
4 answers
2,497 views
Calculate the enthalpy change for the reactions
NO(g) + O(g) → NO2(g) from the following data: NO(g) + O3(g) → NO2(g) + O2(g)
6 answers
8,589 views
A 39-turn circular coil of radius 3.20 cm and resistance 1.00 Ω is placed in a magnetic field directed perpendicular to the
4 answers
6,655 views
SraJMcGin can you please help me?
Modifique el texto por cambiar los verbos italizados de lo familiar (informal) a lo formal
7 answers
2,388 views
How has the united states used economic pressure to promote the spread of democracy
9 answers
1,085 views
The bearing of x from y is 045°and the bearing of z from y is 145°,where x,y and z are three points in the plane.lf y is
5 answers
1,048 views
electrons are accelerated from rest over a distance of 800m to a velocity of 3x10 7 m/s. what is the acceleration of the
1 answer
575 views
How might fossils help plaeontogists to learn about important behaviors of diffrent types of animals. what social behaviors
1 answer
596 views
Find the absolute and percent relative error for each calc.
b) 81.5 (+/- 0.5) x 40.2 (+/- 0.2)/ 21.8 (+/- 0.2) my answer for
1 answer
622 views
Where was the legendary valley of diamonds located
The possible location of this mythical valley is discussed in this site.
1 answer
1,017 views
I got this question wrong, and I'm not sure where my mistakes lie. Can someone show me what I'm not doing right and what the
4 answers
1,639 views
Consider a triangle ABC. C is a right angle, and side a is opposite angle A, side b is opposite angle B, and side c is the
1 answer
763 views
Criticize the following statements.
1. In an ionic compound, the number of cations is always equal to the number of anions. [Is
3 answers
2,813 views
I have to write the introduction to literary essay on The Remains of the Day with the topic "self-deception as
1 answer
593 views
In a lab we are doing, we need to find the theoreical amount of NaCl that we should have left after evaporating the water off an
1 answer
606 views
I am writing an literary essay about The Remains of the Day by Kazuo Ishiguro with the topic of "self-deception as
2 answers
495 views
Explain what is meant in word processing by text wraparound.
Its a text display feature of most word processing programs. Text
1 answer
775 views
We are doing a lab that requires finding the molarity of an unknown AgNO3 solution after reacting NaCl + AgNO3 --> NaNO3 and
3 answers
1,974 views
In a lab we are trying to find the percent yield of NaCl collected after evaporating the water off an NaCl solution. We made up
1 answer
529 views
Anthroquinone (C14H8O2), an important intermediate in the dye industry, is produced from the reaction of benzene with phthalic
5 answers
1,092 views
How do you find an equation of a quadratic function from two points. The two points are the vertex and the y intercept.
Suppose
1 answer
404 views
Could someone please proofread my essay for english? The topic is "self-deception as self-destruction".
1 answer
435 views
Combustion analysis of 1.00g of the male sex hormone, testosterone, yields 2.90 g of CO2 and .875 g H2O. What are the mass
4 answers
2,087 views
Ibuprofen, the active ingredient in advil, is made up of carbon, hydrogen, and oxygen atoms. When a sample of ibuprofen,
2 answers
838 views
Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride, C4H6O3, in the reaction
C7H6O3(s) +
6 answers
5,092 views
Write the net ionic equation for any precipitation reaction that occurs when .1M solutions of the following are mixed.
Does the
3 answers
1,338 views
I just need a basic idea as to how to approach these two problems.
1. A 1.020 g sample know to contain only magnesium carbonate,
1 answer
803 views
I have a few questions on how to do a few problems that I got wrong for homework.
1. If 5.28 g of tin reacted with fluorine to
3 answers
574 views
A worker drags a crate across a factory floor by pulling on a rope tiedto the crate. The worker exerts a force of 450 N on the
1 answer
884 views
A 100 kg crate is pushed at constant speed up the frictionless 30 degree ramp by a horizontal force vector F. What are the
3 answers
1,799 views
Why would you expect lithium and sulfur to have different chemical and physical properties?
Li is in group IA(or 1 depending upon
2 answers
1,347 views
Three bolocks are connected(mass_1 on the left connected to mass_2 with a string which is T_1. Mass_2 is connected to Mass_3
1 answer
449 views
A horse pulls a barge down a canal. The horse pulls on the rope with a force of 7900 N at an angle of 18 degrees to the
2 answers
736 views
An elevator with a wieght of 27.8 kN is given an upward acceleration of 1.22 m/s^2 by a cable. a) what is the tension in the
1 answer
477 views
A lamp hangs vertically from a cord in a descending elevator that declerates at 2.4m/s^2 a) if the tension in the cord is 89N
3 answers
608 views
A section of an alpne cable-car system has a maximum permissible mass of each car with occupants in 2800kg. The cars riding on a
2 answers
534 views
Three bolocks are connected(mass_1 on the left connected to mass_2 with a string which is T_1. Mass_2 is connected to Mass_3
1 answer
504 views
A horse pulls a barge down a canal. The horse pulls on the rope with a force of 7900 N at an angle of 18 degrees to the
1 answer
662 views
An elevator with a wieght of 27.8 kN is given an upward acceleration of 1.22 m/s^2 by a cable. a) what is the tension in the
2 answers
1,014 views
Which of the following pairs of atoms would you expect to combine chemically to form an ionic compound?
A.Li and S B.O and S C.Al
5 answers
4,340 views
A man is dragging a trunk up the loading ramp of a mover's truck. The ramp has a slope angle of 20 degrees, and the man pulls
3 answers
1,722 views
A .22 rifle bullet traveling at 360m/s strikes a block of wood, which penetrates to a depth of .110m. The mass of the bullet is
4 answers
5,204 views
An oil tanker's engine have broken down and the wind has accelerated the tanker to a speed of 1.5m/s straight toward a reef.
1 answer
994 views
A loaded elevator with very worn cables has a total mass of 1800 kg and the cavles can withstand a maximusm tension of 28000N a)
3 answers
1,509 views
Two blocks each with weight w are held in place on a frictionless incline. In terms of w ans the angle theda of the incline,
3 answers
1,671 views
If i buy a machine it will save me $1000 each year for 3 years. If the interest rate is 8% what is the most I should pay for the
1 answer
350 views
I need to make 10 ml of bacitracin at 1 uM. I have purchased 5 mg of it. The MW of it is 458.6 g. How would I go about doing
1 answer
340 views
How do I make 5 ml of a final concentration of 20 ug/ml of reagent A in 10% reagent B/ 1X reagent C?
Note: The stock of reagent A
1 answer
640 views
A father racing his son has half the kinetic energy of the son, who has half the mass of the father. The father speeds up by 1
2 answers
1,279 views
e^x+2=13
solve by logarithm Take the ln of both sides. x*ln e = ln 13. You can do this on your calculator. If you don't know the
1 answer
519 views
An intermediate reaction used in the production of nitrogen containing fertilizers is that b/w NH3 and O2
4NH3(g) + 5O2(g)-->
1 answer
531 views
One atmospheric pressure is that which will support a column of mercury 760.0 mm high. Show that 1 atm equals 1.013 x 10^5
1 answer
518 views
Is average speed (u) the same as root mean square velocity? I found a formula for root mean square velocity which I know is also
3 answers
507 views
How do I solve this?
tan^2x= 2tanxsinx My work so far: tan^2x - 2tanxsinx=0 tanx(tanx - 2sinx)=0 Then the solutions are: TanX=0
4 answers
3,637 views
1. The company uses a job-order costing system. How would you recommend that manufacturing overhead cost be assigned to
1 answer
561 views
I need help balancing this redox equation:
H2O2 + Ni+2 --> H2O + Ni+3 in basic solution. Here's what I have so far: Ni+2 --> Ni+3
4 answers
2,269 views
How does a genre affect the theme of a story - like A Christmas Carol?
This site will give you a definition, plus types of
1 answer
1,140 views
What is the significance of the Mayflower Compact, Virgina House of Burgesses, and colonial town meetings? How are these terms
2 answers
658 views
Was Macbeth to blame for his own tragedy in Macbeth? There are two possibilities Macbeth or Lady macbeth.
Or the Witches. He
1 answer
524 views
Hello, I need help I have to make my own personal code of Ethics following the NAEYC guidelies and also a statement of
2 answers
833 views
Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves
6 answers
6,888 views
Fructose is a sugar commonly found in fruit. A sample of fructose, C6H12O6, weighing 4.50 g is burned in a bomb calorimeter. The
4 answers
3,736 views
Given
2Al2O3 (s) --> 4Al(s) + 3O2 (g) (standard enthalpy change= 3351.4 kJ) a) What is the heat of formation of aluminum oxide?
4 answers
7,285 views
Butane, C4H10, is widely used as a fuel for disposable lighters. When one mole of butane is burned in oxygen, carbon dioxide and
3 answers
2,562 views
How many dimes are in $5.00?
How many quarters are in $20.00? 1 dime = 10 cents or .10 take 5 dollars and divide by .10 same
1 answer
449 views
Which letter of the term that is NOT a representative particle of a substance.
a)molecule b)atom c)grain d)formulaunit Was ist
1 answer
1,045 views
is the following sentence true or false?
To determine the number of representative particles in a compound, you count the
1 answer
553 views
If you divide the molar mass of a compound by the empirical formula mass, what is the result?
That division should be VERY close
2 answers
885 views
Is this true? The molar mass of nitrogen gas is 14.0 g.
Nitrogen occurs in nature as N<sub>2</sub>
1 answer
370 views
Help me out! Thanks! You guys have really helped me before.
Question 1 What does the law of inertia say about the velocity and
2 answers
532 views
What is the density of N2O, a gas, at STP?
How many moles are in 16 grams of O2? density = mass/volume 1 mol of a gas occupies
2 answers
1,364 views
Superscript 15
How many moles of Pb is 9.3 X 1015 atoms of pb? 1 mol of Pb atoms will contain 6.02 x 10^23 atoms of Pb. So 9.3 x
1 answer
1,064 views
what mass of protons would be required to just neutralize the charge of 1.0g of electrons?
how do I answer this? You know the
5 answers
7,037 views
We were given an assignment to find a formula for finding the density of water. I wasn't in class when the assignment was given,
1 answer
439 views
Find two Web sites dealing with indigenous cultures and/or religions. Discuss how modern civilization has impacted the spiritual
3 answers
619 views
Consider the interrelatedness of everything in the cosmos as it is expressed in many indigenous religions. How do you think the
7 answers
548 views
From your experience, predict which of the following reactions are spontaneous.
a) Zn(s) + 2H+(aq)--> Zn+2(aq) + H2 (g) b)
1 answer
1,020 views
I'm reading [and translating] the poem "Llénalo de Amor" by Amado Nervo. I've gotten most of it down, but I'm stuck on one
1 answer
527 views
A cart of mass 340 g moving on a frictionless linear air track at an initial speed of 1.2 m/s undergoes an elastic collision
4 answers
2,052 views
In a game of pool the cue ball strikes another ball of the same mass and initially at rest. After the collision the cue ball
1 answer
700 views
I'm unbelievably stuck on this problem. Any help would be appreciated.
Red phosphorous is formed by heating white phosphorous.
1 answer
584 views
In a game of pool the cue ball strikes another ball of the same mass and initially at rest. After the collision the cue ball
1 answer
590 views
A cart of mass 340 g moving on a frictionless linear air track at an initial speed of 1.2 m/s undergoes an elastic collision
3 answers
2,096 views
1. Use standard entropies and heats of formation to calculate delta-G of formation at 25° C for
a) cadmium(II) chloride (s) b)
2 answers
1,153 views
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