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Questions (917)
If you know that a randomly chosen person 25 years of age or older is a college graduate, what is the probability that he/she is
2 answers
591 views
Can anyone help me ??
George W. Bush's victory in presidentaial election of 2000 was finally decided by who??
3 answers
589 views
Help, how do I do these?
1. 8y+4(2+y)=3(y-4)+10y 2. Square root symbol 81 -|-8+17|+3 the sqaure root symbol doesn't hang over the
1 answer
454 views
List 3 problems of Decentralized power that existed under the Articles of Confederation. For each problem, identify one solution
4 answers
1,357 views
#1
Here's my argument: Alice went to Lincoln High and earned a college scholarship. Ben went to Lincoln High and earned a college
1 answer
498 views
#1
Here's my argument: Alice went to Lincoln High and earned a college scholarship. Ben went to Lincoln High and earned a college
2 answers
598 views
Can someone help me find the average punishment for forcible in the United States?
I know most of it is based on a state level,
2 answers
508 views
9z-42z-72/3z^2+28z+32divided by 2z^2+10z-48/z^2-9z+18
Can someone help me? I know they're supposed to be flipped and factored,
6 answers
552 views
The 49 kg climber is supported in the "chimney" by the friction forces exerted on his shoes and back. The climber has reduced
4 answers
2,383 views
A 20g particle is moving to the left at 30 m/s. How much net work must be done on the particle to cause it to move to the right
4 answers
4,852 views
A constant horizontal force of magnitude 18.0 N pushes a block of mass 2.00 kg along
a rough horizontal surface for a distance of
2 answers
601 views
After the play _____, several critics made scathing comments about it. a)succeeded b)opened c)closed d)bombed a is that correct
4 answers
1,404 views
The mom left the room with a MODICUM of respect after her baby began ____ . a) sleeping b) screaming c) praying d) singing b is
1 answer
425 views
Air will break down as a dielectric when subjected to applied fields in excess of 3 * 10^6 N/C. a parallel plate capacitor using
1 answer
453 views
A sample of 40 observations is selected from one approximately normal population. The sample mean is 102 and the sample standard
2 answers
731 views
If a soccer ball is kicked at 11.5 m/s at an angle of 41 degrees above horizontal, what is the ball's maximum range?
1 answer
379 views
The leg and cast in the figure below weigh 260 N, with the center of mass as indicated by the blue arrow in the diagram. The
1 answer
855 views
The leg and cast in the figure below weigh 260 N, with the center of mass as indicated by the blue arrow in the diagram. The
1 answer
632 views
Sooo...
Isaac kicks a soccer ball 11.5 m/s at an angle of 41 degrees above horizontal. What is the velocity of the ball just
1 answer
441 views
f-g/1 = g/1
How can I make g the subject?
1 answer
328 views
A full container holds 5/8 of a gallon of liquid. If the container is 4/5 full, how much liquid is in the container? I need
4 answers
884 views
Suppose that 0 < c < ¥ð/2. For what value of c is the area of the region enclosed by the curves y = cos x, y = cos(x - c), and
3 answers
741 views
I asked this question on last thursday and u told me that the bottom limit for the 1st and the right limit for the 2nd area is
4 answers
1,003 views
ok, i tried to do what you told me but i cant solve it for c because they cancel each others out!
the integral for the first one
3 answers
745 views
reduce the fraction 6x/12x to lowest terms.
2 answers
492 views
reduce the fraction 6x/12x to lowest terms
1 answer
447 views
divide 40x/64y by 5x/8y
2 answers
632 views
multiply r^2+7r+10/3 by 3r-30/r^2-5r-50
2 answers
592 views
multiply r^2+7r+10/3 by 3r-30/r^2-5r-50
1 answer
378 views
find the illegal values of C in the multiplication statement c^2-3c-10/c^2+5c-14 . c^2-c-2/c^2-2c-15
3 answers
1,479 views
An airplane is flying on a compass heading (bearing) of 340 degrees at 325 mph. A wind is blowing with the bearing 320 degrees
5 answers
4,154 views
find the illegal values of c in the multiplication statement c^2-3c-10/c^2+5c-14.c^2-c-2/c^2-2c-15
1 answer
434 views
How many five-digit integers are perfect squares?
2 answers
1,212 views
The grams of oxygen that would produce 13.4 g Cl^2O^7 molecules.
3 answers
333 views
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar
3 answers
1,616 views
How many unit cubes would it take to construct the complete exterior of a hollow cube with edges of 4 units and faces 1 unit
6 answers
1,396 views
There is a 4 x 4 square grid. Two unit squares are chosen from the 16 unit squares possible. What is the probability that they
1 answer
510 views
There is a 4 x 4 square grid. Two unit squares are chosen from the 16 unit squares possible. What is the probability that they
1 answer
1,059 views
How many non-congruent triangles with only integer side legnths have a perimeter of 15 units?
5 answers
2,167 views
The graphs of y= x^2 - 8x - 35 and
y= -2(x^2) + 16x +3 intersect in two points. What is the sum of the x-coordinates of the two
2 answers
488 views
A compound contains only hydrogen and nitrogen and is 12.6% hydrogen by mass. A gaseous sample of the compound has density of
1 answer
872 views
A steel cylinder contains 98.0 moles of oxygen gas at temperature of 38 degree Celsius and a pressure of 740 torr. After some of
1 answer
921 views
Consider the flasks diagrammed below. What is the total pressure in torr after the stopcock between the two flasks is opened?
3 answers
1,327 views
CaO(s) reacts with SO2(g) according to the following equations: CaO9(s)+So2(g)--> CaSO3(g).
A 8.85g mixture containing CaO(s) is
1 answer
751 views
A sample of oxygen gas is collected by displacing water from an inverted bottle as shown in the diagram below. The volume of
1 answer
797 views
A 0.0677g sample of magnesium metal reacted with excess hydrochloric acid to produce 69.9 ml of hydrogen gas. The gas was
4 answers
2,414 views
A 0.188g sample of unknown metal, X (s), produced 71.4 ml of hydrogen gas when reacted with HCL according to the equation:
4 answers
1,098 views
Hi all.
I'm trying to write a paragraph in french. These are my instructions: Décrivez vos activités habituelles pendant les
4 answers
595 views
How many milliliters of 3.0 M NaOH are required to react with 4.0mL of 16.0 M HNO3? ---> Not sure if I am solving correctly but
3 answers
2,002 views
How many milliliters of 3.0 M NaOH are required to react with 0.50g of Cu2+ to form Cu(OH)2?
3 answers
1,210 views
Iron is obtained from iron ore according to the following reaction: Fe2O3+CO---> Fe+CO2 (unbalanced).
a. Assuming the blast
4 answers
1,795 views
What are 3 possible reasons why a percentage recovery might be low? And what are 3 possible reasons why a percentage recovery
2 answers
668 views
The freezing point of a cyclohexane sample is 6.20*C. A soltuion is prepared by dissolving 0.4660g of an unknown solute in 36.0g
3 answers
2,251 views
A right square pyramid’s base has edges measuring 20 feet each. If
the pyramid’s height is 27 feet, what is its volume, in
4 answers
1,502 views
Two electrostatic point charges of +30 ìC and +25 ìC exert a repulsive force of 200 N on each other. What is the distance
1 answer
709 views
Why is it important to swirl the NaOH solution each time before using it during a titration?
3 answers
759 views
Would it be better to use an unknown acid sample of a size that should require 10.00 milliliters or one that would require 15.00
4 answers
1,429 views
Titration of an Unknown Acid...
What effect on the molar mass of the unknown acid would each of the following have... Would it
4 answers
2,504 views
The Hydrolysis Reactions - Write net-ionic equations for the reaction of each salt with water below. If there is no reaction,
4 answers
13,311 views
Starting with 0.3500mol Co(g) and 0.05500mol COCL2(g) in a 3.050 L flask at 668K, how many moles of Cl2 are present at
6 answers
2,472 views
HCONH2(g) <-> NH3(g) + CO2(g) Kc= 4.84 at 400 K2(g)
If 0.186 mol of HCONH2(g) dissciates in 2.16L at 400K, what will be the total
9 answers
1,059 views
Determine Kc for the following reaction:
1/2N2(g) + 1/2O2(g)+ 1/2Br(g) <-> NOBr(g) from the following information (at 298K)
4 answers
3,433 views
Given the equation
2H^2S(g) <-> 2H^2(g) + S^2(g) With a Kp = 1.2x10^-2 at 1338 Kelvin Find the value of Kc for the reaction
7 answers
834 views
Given the equation
NO(g) + 1/2)O^2(g) <-> NO(g) at 457 Kelvin with a K = 7.5 x 10^2 Find the K value for the equation 2NO^2(g)
5 answers
421 views
0.100 mol of SO2 and 0.100 mol of O2 are introduced in a flask of 1.52 L. When in equilibrium, 203 is found to be 0.0916 mol.
6 answers
878 views
You receive an invoice for $565.00 with terms 3/10, net 30. If you pay it immediately, how much will you pay?
A. $548.05 B.
4 answers
1,792 views
What is [H30+] in a solution obtained by dissolving 205mL HCl(g), measured at 23 C and 751mmHg, in 4.25L of aqueous solution?
3 answers
736 views
How many mL of concentrated HCl(aq) (36% HCL by mass, d=1.18g/mL_ are required to produce 12.5 L of a solution with ph = 2.10?
Fi
4 answers
1,983 views
why did the anti-war protest hurt the united states during the Vietnam war?
6 answers
596 views
((AN ERA OF LIMITS 1969-1980))
How were the relations between the United States and the Soviet Union different during this era?
1 answer
629 views
Heights of fences are normally distributed with a mean of 52 inches and a standard deviation of 4 inches. Find the probability
2 answers
1,075 views
The following standard free energies are given for 25 degrees celcius.
1) N2(g) + 3H2(g)-> 2NH3(g) delta g = -33.0 kJ 2) 4NH3(g)
1 answer
714 views
foofy computes the correlation between an individual's physical strength and his or her college grade poing average. Using a
2 answers
1,074 views
In a large hotel, a fast elevator takes you from the ground floor to the 21st floor. The elevator takes 17 s for this trip: 5 s
2 answers
1,363 views
A plumber must bend a piece of tubing twice, allowing 5/8 inch for each bend. use the total of 12 1/2, 16 3/4, and 18 3/4. To
3 answers
390 views
In this problem, x cubed = 12y...how do you solve to determine if this is direction variation or not?
1 answer
325 views
a 1.29 kg ball is connected by means of two massless strings to a vertical, rotating rod. The strings are tied to the rod and
4 answers
1,018 views
A race driver has made a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration
2 answers
567 views
In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 11.1 m/s in 2.30 s.
1 answer
453 views
A jetliner, traveling northward, is landing with a speed of 66.5 m/s. Once the jet touches down, it has 766 m of runway in which
1 answer
412 views
A race driver has made a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration
1 answer
464 views
what is the inverse function of f(x)=-[sqrt(25-x^2]
3 answers
569 views
Find the limit.
lim h → 0 square root (49 + h) − 7 / h Note: Only 49 +h are under square root.
3 answers
1,187 views
A Hindu society in Southeast Asia that resisted both Buddhism and Islam was
3 answers
844 views
Given:
f(x)=2x^2-x+1 g(x)=2 sin x h(x)=3^x Determine: a) f(g(x)) b) (h^-1 o f)(x) c) g(f(h(x)))) Please show steps, thank you
1 answer
272 views
Give the component form of the resultant vector in the following.
u = (10, 5) -3u = ?
1 answer
448 views
1. All of the following are among the Pillars of Islam except.
A. performing daily prayers. B. memorizing the Koran. C. giving to
2 answers
738 views
Why did different regions in Africa develop in different ways between 1000 and 1700?
2 answers
472 views
an object has a charge of -2.0 microcoloumbs, how many electrons must be removed so that the charge becomes +3.0 microcoloumbs?
I
1 answer
972 views
A 1.1 kg block slides along a friction-less surface at 1.4 m/s. A second block, sliding at a faster 4.3 m/s, collides with the
1 answer
436 views
A 9.6 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks
1 answer
662 views
A 9.6 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks
1 answer
834 views
A spaceship of mass 2.3×10^6 kg is cruising at a speed of 6.0×10^6 m/s when the antimatter reactor fails, blowing the ship
2 answers
1,167 views
The perimeter of the office bulletin board is 24 ft. The perimeter of the sandbox is 1 1/2 times as long. What is the perimeter
2 answers
813 views
three bowls are filled to a depth of four units. a paraboloid, z=x^2 +y^2 for 0<z<4, a cone z=(x^2 + y^2)^(1/2) for 0<z<4, and a
4 answers
2,994 views
I need to calcuted the molarity from this
12.5 g of ethylene glycol antifreeze dissolved in o.100kg of water. Density of solution
2 answers
616 views
I have o.236 g for urea and 0.235g for NaCl.
And the question is On a gram basis, which is more effective in depressing the
9 answers
966 views
Commodity prices of NaCl and urea are about $0.033/lb for NaCl (as rock salt) and about $0.10/lb for urea. Calculate the cost of
1 answer
417 views
I am having trouble on this please help
Indicate which of these statements is true? For those that are false,.explain why a)
1 answer
434 views
Commodity prices of NaCl and urea are about $0.033/lb for NaCl (as rock salt) and about $0.10/lb for urea. Calculate the cost of
1 answer
471 views
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