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March 10, 2012
Phosphorus pentachloride decomposes according to the chemical equation
PCl5(g) -----> PCl3 (g)+ Cl2(g) Kc= 1.80 at 250 degrees C
9 answers
asked by
Sarah
5,098 views
An electric post was broken by a strong typhoon.It formed a right triangle with the ground.If a broken part makes an angle of 25
1 answer
asked by
NIRVANA RIZA A. GARON
4,194 views
Phenacetin has the structure shown below. Write an equation for its preparation starting from 4-ethoxyaniline.
1 answer
asked by
chi
4,012 views
Give two reasons why the crude product in most reactions is not pure.
4 answers
asked by
chi
3,761 views
The width of a rectangle is fixed at 7 cm. Determine (in terms of an inequality)those lengths for which the area will be less
2 answers
asked by
Jeannine
3,269 views
a pizza has a circumference of 47.1in. what is the radius
8 answers
asked by
daryl
2,749 views
A long cylindrical insulator has a uniform charge density of 1.0 #C/m3 and a radius of
9.0 cm. a) What is the electric field
2 answers
asked by
Fatima
2,490 views
Spider silk is a remarkable elastic material. A particular strand has spring constant 70 mM/m, and it stretches 9.5 cm when a
3 answers
asked by
Eliana
2,465 views
if the average number of textbooks in professors' offices is 16, the standard deviation is 5, and the average age of the
3 answers
asked by
linda
2,103 views
a positive charge is moving to the right and experiences a vertical upward magnetic force. In which direction is the magnetic
1 answer
asked by
fatih
2,046 views
Why do the rate of reaction for a reversible reaction slows down at equilibrium stage.
2 answers
asked by
Rose
2,045 views
A galvanic cell is based on the following half-reactions:
Fe2+ + 2e- --> Fe(s) E= –0.440 V 2H+ + 2e- --> H2(g) E= 0.000 V where
2 answers
asked by
Kaili
2,012 views
A biologist estimates that 80% of the deer in a region carry a certain type of tick. For a sample of 300 deer selected at random
2 answers
asked by
Anonymous
1,944 views
what are the equivalent fractions for 9/8
4 answers
asked by
shion
1,885 views
How would changes in blood flow o specific organs help someone resist dehydration? Consider how reduction of function in
1 answer
asked by
lisa
1,830 views
what are the equivalent fractions for 7/20
2 answers
asked by
shion
1,668 views
A town has a population of 32,000 in the year 2002; 35,200 in the year 2003; 38,720 in the year 2004; and 42,592 in the year
1 answer
asked by
Brittany
1,549 views
A 35-foot long ladder is leaning against the wall of a building.How far from the ground is the top of the ladder and how far
3 answers
asked by
nestor v. reye,Jr.
1,522 views
Manually calculate the compound interest on an investment of $8500 at 6% interest, compounded semiannually, for 18 mo.
1 answer
asked by
sandra
1,519 views
The pulley system shown in the figure is used to lift a 52-{\rm kg} crate. Note that one chain connects the upper pulley to the
1 answer
asked by
JO
1,516 views
An RLC circuit has voltage supplied to it at a frequency of 13.0 kHz with a phase difference between the current and the voltage
1 answer
asked by
fatih
1,473 views
Question 1: Kinetic Theory (7 points)
a. Briefly state what the kinetic theory says. (2 points) b. Put the following molecules in
1 answer
asked by
princess
1,470 views
Two ships are leaving port at the same time. The first ship is sailing due east at 20 km/hr and the other due north at 15 km/hr.
1 answer
asked by
Candy
1,454 views
At a certain temperature, the Kp for the decomposition of H2S is 0.832
H2S (g) <-- --> H2 (g) + S (g) Initially, only H2S is
13 answers
asked by
Jerry
1,447 views
An electron micrograph of a newly discovered cell shows long projections with a basal body in the cell wall. What kind of
1 answer
asked by
’MICROBIOLOGY
1,410 views
Calculate the solubility of Mn(OH)2 in GRAMS PER LITER when buffered at each of the following.
a)pH 7.4 b)pH 9.2 c) pH 11.5
1 answer
asked by
fernatesfsdf
1,397 views
what is the pH and pOH of a soution with a volume of 5.4 that contains 15 grams of HCl and 25 grams of nitric acid
1 answer
asked by
Anonymous
1,386 views
Mr. Rogers wants to fence in a rectangular garden next to a straight section of the Scioto
River. He has 330 feet of fencing to
1 answer
asked by
Sandy
1,378 views
An ion enters a mass spectrometer which has a .18 T field perpendicular to?
an electric field of 1.6 kV/m and selects a velocity.
1 answer
asked by
fatih
1,351 views
A 1O-m ladder rests againts the wall of a house.The foot of the ladder on the ground is 1.3 m from the wall.What angle does the
2 answers
asked by
NIRVANA RIZA A. GARON
1,335 views
An apparatus consists of a 4 L flask containing nitrogen gas at 32C and 885 kPa, joined by a valve to a 8 L flask containing
2 answers
asked by
Sarah
1,312 views
An apparatus consists of a 4 L flask containing nitrogen gas at 32 C and 885 kPa, joined by a valve to a 8 L flask containing
2 answers
asked by
Sarah
1,305 views
1. when he roman government began to persecute Christians
under Nero, a) Christianity almost disappeared b) Christians had to
11 answers
asked by
☻i♥zee☻
1,269 views
A zinc-copper battery is constructed as follows at 25 degree C:
Zn | Zn2+(0.15 M) || Cu2+(1.70 M) | Cu The mass of each electrode
1 answer
asked by
Puja
1,268 views
2. Let R be the region in the first quadrant bounded by the graphs of (x^2/9)+(y^2/81)=1 and 3x+y=9 .
a. Set up but do not
0 answers
asked by
Taeyeon
1,256 views
A 35-foot long ladder is leaning against the wall of a building.How far from the ground is the top of the ladder and how far
1 answer
asked by
NIRVANA RIZA A. GARON
1,249 views
at 3.68100017 kHz the reactance in a circuit of a 9 uF capacitor and an inductor are equal in magnitude. what is the value of
2 answers
asked by
fatih
1,246 views
Let x and y be the amounts of time (in minutes) that a particular commuter must wait for a train on two independently selected
2 answers
asked by
Roshelle
1,244 views
3 Some bacterial toxins cause cells lining the digestive tract to secrete ions, making the contents of the tract hypertonic.
0 answers
asked by
’MICROBIOLOGY
1,208 views
Wheat is poured on the ground at a rate of 12 ft^3/s. The pile forms a cone whose altitude is always three fourths of the
1 answer
asked by
Candy
1,187 views
1. On a measure of anxiety, the mean is 79 and the standard deviation is 12. What are the z-scores for each of the following raw
1 answer
asked by
bertha
1,182 views
(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 9.62 m/s when going
1 answer
asked by
Ryan
1,173 views
A boat being pulled toward a wharf by a rope attached to the boats deck from a point 8.0 m above the deck. If the rope is being
1 answer
asked by
Candy
1,151 views
Physics Gravitation help...?
hello People i need some help with my physics revision sheet. i cant seem to get my head round it.
0 answers
asked by
basher
1,147 views
A mas of 100 Kg hangs from a cable secured to a steel pole and supported by another cable as shown below. Find the tension (T)
0 answers
asked by
Mary
1,137 views
given triangle abc, measure of angle b= 120 degrees, ab= 6 units, bc= 10 units, find the area of abc
1 answer
asked by
Anonymous
1,121 views
10. Use one of the sources available in the Almanacs and Yearbooks section to identify the approximate time of sunrise in
1 answer
asked by
Mrs. Jane
1,120 views
find the point on the line y=2x-1 which is closest to the point (2,-1).
I used distAnce formula and got D= (square root 5x^2 -4x
1 answer
asked by
L.Bianchessi
1,082 views
I still have some more corrections I'd like you to check. Thank you. Please, I really need you help!
1) Because of Eton's
1 answer
asked by
Henry
1,069 views
I got a problem that states which graph represents the sequence of 1,2.5,4,5.5,7..
Should the graph start at 1,1 or 0,1?
1 answer
asked by
rob
1,042 views
I still have some sentences to check. Thank you very much to you all!
1) He was one of the most famous foreigners participating
1 answer
asked by
Henry
998 views
How many positions would be needed to represent 57^10,001 in ordinary decimal notation.
Thanks!
1 answer
asked by
Sandy
996 views
2. Utilizing the publication search function on EDSeek's Home page, which of the following companies publishes Pediatric
1 answer
asked by
Mrs. Jane
975 views
If Kc = 0.480 at 40.°C and Kc = 0.630 at 90.°C, what is ΔH° for the reaction?
X<---->Y
1 answer
asked by
Andrew
973 views
I need your help to check these sentences, Writeacher. Thank you very much in advance.
1) Winston's face is ruddy for the low
1 answer
asked by
Henry
971 views
Archaeologists and forensic scientists use the length of of human bones to estimate the height of his/her femur f(the bone from
2 answers
asked by
kim
956 views
The decomposition of hydrogen peroxide in the presence of potassium iodide is believed to occur by the following mechanism:
step
0 answers
asked by
Hannah
945 views
In the reaction between p-aminophenol and acetic anhydride to form acetaminophen, what was the purpose of adding water to the
0 answers
asked by
chi
944 views
The strength of a beam with rectangular corss-section is directly proportional to the product of the width and the square of the
0 answers
asked by
Candy
943 views
1/[N2O] = 1/(1.75M) + (1.10E-3M^-1 S^-1)(1852s)
[N2O] = 0.383 M I know I posted a similar question but I am having trouble with
0 answers
asked by
Hannah
940 views
Given the function�" f(x)=1/4x− 3, find a formula for the inverse function.
1 answer
asked by
Brian
940 views
A 0.5 kg air-hockey puck is initially at rest. What will its kinetic energy be after a net force of 0.3 N acts on it for a
1 answer
asked by
Michelle
928 views
(4.35E-2 - x)(7.56E-2 -x )
============================ (0.324 + 2x)2 Rearrange to get an expression of the form ax2 + bx + c = 0
2 answers
asked by
bob
921 views
The decomposition of hydrogen peroxide in the presence of potassium iodide is believed to occur by the following mechanism:
step
0 answers
asked by
Hannah
897 views
A projectile is launched from a platform 20 feet high with an initial velocity of 72 feet per second,
The height h of the
0 answers
asked by
Brian
895 views
Which represents the type of sequence: 12, 22, 30, 36, 41, …?
neither arithmetic nor geometric both arithmetic and geometric
2 answers
asked by
Brett
885 views
find max, min and saddle points of the give function f(x,y)=sin(x)+sin(y)+sin(x+y)
0<=x<=pi/4 0<=y<=pi/4 i have that
1 answer
asked by
Help Please
865 views
20. Which of the following sets of Library of Congress call numbers is
in the correct order? A. E88 G2512 S57 1998, E88 G62 D225,
1 answer
asked by
Mrs. Jane
859 views
Find the points of inflection of the graph of the function. (If an answer does not exist, enter DNE.)
f(x) = 1/3x^4 + 4x^3 for
2 answers
asked by
Angelina
852 views
A can of soda at 80° F. is placed in a refrigerator that maintains a constant temperature of 36°
F. The temperature T of the
0 answers
asked by
Brian
816 views
The value of many things we own depreciates over time. When an asset's value decreases by a fixed amount each year, the
1 answer
asked by
kim
815 views
write an algebraic expression for y decreased by 14?
2 answers
asked by
Anonymous
798 views
explain how to find ans. a clock has a circumference of 166cm. what is the diameter
2 answers
asked by
daryl
797 views
Write the balanced equation for the double replacement reaction of:
Barium chloride and Sulfuric acid
2 answers
asked by
Kristy
777 views
a magnetic field goes from the top to the bottom of this page. what direction will a proton moving diagonally from the upper
1 answer
asked by
fatih
771 views
A closed box is to be a rectangular solid with a square base and volume of 12 ft^3. Find the most economical dimensions if the
0 answers
asked by
Candy
762 views
A proton moves with a velocity of vector v = (6ihat - 1jhat + khat) m/s in a region in which the magnetic field is vector B =
4 answers
asked by
Anand
761 views
Suppose that sin q = − 12/13 and that q is a Quadrant IV angle.
(a) Find the exact value of cos q. Show work. (b) Find the
0 answers
asked by
Brian
753 views
Write the balanced equations for the following examples:
a) potassium hydroxide + sodium sulfide --> potassium sulfide + sodium
1 answer
asked by
Nene
753 views
Points (–1, 6) and (–3, 2) are endpoints of the diameter of a circle.
(a) What is the exact length of the diameter? (Simplify
0 answers
asked by
Brian
749 views
A mass sits at the top of a 2 meter long ramp inclined at an angle of 30 degrees (to the horizontal). When the mass is released,
1 answer
asked by
Mary
748 views
an RlC circuit has a resistance of 4 kOhm, a capacitance of 33 uF, and an inductance of 23 H. if the frequency of the
1 answer
asked by
fatih
747 views
A skateboarder shoots off a ramp with a velocity of 6.7 m/s, directed at an angle of 59° above the horizontal. The end of the
1 answer
asked by
Angela
739 views
M= 19.8 SD= 7.2
What is the probability of randomly selecting a student with a treadmill time greater than 25 minutes? In
2 answers
asked by
Amy
718 views
Estimate the limit numerically.
lim as x→(approaches to)5 6e^(x − 5) How do I solve it? I don't plug in the numbers do I?
2 answers
asked by
Nick
716 views
Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of
0 answers
asked by
Kelly
713 views
How much work does a 69 kg person do against gravity in walking up a trail that gains 790 m in elevation
2 answers
asked by
Michelle
712 views
solve the system
7x^2 - 5y^2 + 20y = 3 21x^2 + 5y^2 =209
1 answer
asked by
Martin
707 views
The heart lung machine is used so that surgeons can operate on the arteries supplying heart muscle. These arteries may be
0 answers
asked by
pooja
706 views
Calculate the solubility of Mn(OH)2 in GRAMS PER LITER when buffered at each of the following.
a)pH 7.4 b)pH 9.2 c) pH 11.5
1 answer
asked by
JIM
705 views
Hi!
I would like to know the definitions for... ELEMENT: something on the periodic table? COMPOUND: molecule with at least 2
1 answer
asked by
Cicilia
699 views
what are van der waals forces
3 answers
asked by
jake
698 views
The total charge in an electrical circuit as a function of time is given by q=t/(t^2+1) coulombs. Find the maximum charge of q.
0 answers
asked by
Candy
685 views
y= sqrt(81-x^2)
What length and width should the rectangle have so that its area is a maximum? (smaller value) (larger value)
0 answers
asked by
Angelina
679 views
Please explain what is global warming?. And How Do Business Enterprises contribute towards economic growth??? And Please Name Me
2 answers
asked by
Khabo
672 views
The temperature controls to two locations on Earth. Discuss how the 5 factors influencing temperature patterns effect St. Louis,
0 answers
asked by
Jazmyne
667 views
A tank consists of a right circular cylinder at height (h)surmounted by a hemisphere at a radius (r) with an outlet atthe top.
0 answers
asked by
Peter
666 views
What is the underlying message of all of Arthur Jarvis’s writing? How does reading his son’s writing affect the behavior of
2 answers
asked by
john
665 views
13. Which of the following publications are both listed under the
"Magazines" results? A. Science News and Earth Island B. The
1 answer
asked by
Mrs. Jane
646 views
Which is the eighth term in the sequence an=-1/125(5^n-1)
1 answer
asked by
Beth
644 views
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