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Ethan

Questions and answers by Ethan

Questions (221)

A certain diving bell for use in the ocean has a square window measuring 0.250 m on each side. The inside of the bell is
1. 2 answers
2. 739 views
When copper(II) nitrate reacts with sodium hydroxide, copper (II) hydroxide is produced. How many grams of Cu(OH)2 can be
1. 5 answers
2. 2,729 views
1. Present Values. Compute the present value of a $100 cash flow for the following combinations of discount rates and times.a. r
1. 3 answers
2. 594 views
given two containers, one holding 4 gal. and the other holding 3 gal. how does one measure out two gal.?Fill the 3 gal, pour it
1. 1 answer
2. 1,033 views
Which of the following argues in favor of using Gross Domestic Product as a measure of economic well-being?
1. 1 answer
2. 438 views
Question on study guide that i don't get.Bill O’Really of OX News observed that poultry (chicken and turkey) consumption in
1. 2 answers
2. 728 views
f(x) = x + 7 if x < or equal to 5F(x) = 7 if x >5 what is the limit as x is approaching 5 from the left side????? I know that
1. 1 answer
2. 423 views
What is the limit as x approaches -1of x - 5 --------------------- 4x(squared)-6x+ 3
1. 1 answer
2. 392 views
x(squared)+8x+17 if x < or = -4Let f(x)= 2 if x= -4 -x(squared)-8x-15 if x > -4 Show that f(x) has a removable discontinuity at
1. 1 answer
2. 419 views
Where does clay come from?
1. 1 answer
2. 407 views
how do i find the inverse of f(x)= (3x+7)/(x-2)
1. 3 answers
2. 308 views
Sodium phosphate, Na3PO4, reacts with HCl to form H3PO4 and NaCl. How many liters of 0.1 M HCl are required to react with 0.1
1. 4 answers
2. 2,347 views
you buy a bottle of juice for $1.00. The juice costs 90 cents more than the empty bottle. How much does the empty bottle cost?
1. 7 answers
2. 1,373 views
Which of the following would be the limiting reagent in the reaction shown below? There are 50 molecules of O2 and 50 molecules
1. 4 answers
2. 2,431 views
For the reaction 2Na(s) + Cl(g) �¨2NaCl(s), how many grams of NaCl could be produced from 103.0 g of Na and 13.0 L of Cl (at
1. 1 answer
2. 457 views
I have no idea how to do this activity..can someone please help!?In this activity you will investigate how chemical reactions
1. 3 answers
2. 568 views
How would I find three different quotients that equal 5 to the negative 7th
1. 2 answers
2. 986 views
Where is the adverb located in the following sentence?"Timothy was not so sure that he liked Ethan as much now that he was being
1. 3 answers
2. 374 views
y+2x=3, y+2x=-4
1. 1 answer
2. 264 views
What are some good intepretive discussion questions for the book This Boy's Life by Tobias Wolff
1. 1 answer
2. 856 views
Homework Help!!! (Books)?I have a homework assignment and I really need help. I'll be very thankful and pleased if anyone can
1. 3 answers
2. 554 views
What would a good essay title be if I'm writing an essay about a character in a book who is torn between two conflicting forces?
1. 5 answers
2. 576 views
A precipitate of calcium phosphate is formed when aqueous solutions of sodium phosphate and excess calcium chloride are mixed.
1. 2 answers
2. 1,385 views
I need to draw a diagram showing delta, oxalate, tributary and meander.I also need to draw a diagram showing water table, zone
1. 2 answers
2. 543 views
Describe situations where no work is done and situations where work would be done?
1. 1 answer
2. 350 views
When an object is thrown into the air, relate it's mechanical energy to kinetic and gravitational energy.
1. 1 answer
2. 428 views
A unit of area often used in measuring land areas is the hectare, defined as 104 m2. An open-pit coal mine consumes 99 hectares
1. 2 answers
2. 1,111 views
Because Earth's rotation is gradually slowing, the length of each day increases: The day at the end of 1.0 century is 1.0 ms
1. 4 answers
2. 1,439 views
A hot-air balloon is ascending at the rate of 13 m/s and is 62 m above the ground when a package is dropped over the side. (a)
1. 2 answers
2. 666 views
During a hard sneeze, your eyes might shut for 0.58 s. If you are driving a car at 92 km/h during such a sneeze, how far does
1. 3 answers
2. 741 views
A startled armadillo leaps upward, rising 0.515 m in the first 0.203 s. (a) What is its initial speed as it leaves the ground?
1. 3 answers
2. 1,121 views
A car travels up a hill at a constant speed of 33 km/h and returns down the hill at a constant speed of 60 km/h. Calculate the
1. 3 answers
2. 510 views
(a) If the position of a particle is given by x = 16t - 7t3, where t is in seconds and x is in meters, when is the particle's
1. 2 answers
2. 816 views
An electric vehicle starts from rest and accelerates at a rate of 2.3 m/s2 in a straight line until it reaches a speed of 17
1. 2 answers
2. 1,176 views
An electron moving along the x axis has a position given by x = 14 te-t m, where t is in seconds. How far is the electron from
1. 1 answer
2. 1,095 views
The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her $410 to drive 300 mi
1. 3 answers
2. 1,006 views
factor 6x^2-1
1. 1 answer
2. 240 views
factor 7x+42
1. 1 answer
2. 293 views
If a ball is thrown in the air with a velocity 44 ft/s, its height in feet t seconds later is given by y = 44t - 16t2. (Round
1. 6 answers
2. 9,474 views
I have to write an outline on The Sun Also Rises by Ernest Hemingway, and I can't seem to find an appropriate thesis statement
1. 2 answers
2. 518 views
take the first definition then double one letter to spell a wordExample Slang word for a police officer - cop A place wher
1. 3 answers
2. 396 views
If B is added to C = 6.5i + 4.6j, the result is a vector in the positive direction of the y axis, with a magnitude equal to that
1. 2 answers
2. 548 views
If a - b = 2.4c, a + b = 5.8c, and c = 1.3i + 4.9j, then what are (a) the x component of a, (b) the y component of a, (c) the x
1. 1 answer
2. 326 views
Only two horizontal forces act on a 9.1 kg body. One force is 5.3 N, acting due east, and the other is 1.6 N, acting 56° north
1. 2 answers
2. 549 views
What is the length of the midsegment of the trapezoid made by the vertices A(0, 5), B(3, 3), C(5, -2) and D(-1, 2). Show
1. 2 answers
2. 1,079 views
H(x)= 0.002x^2+0.005x-0.029 where x is the speed of the car in miles per hour.How can I rewrite the function so that x represe
1. 1 answer
2. 1,105 views
H(x)= 0.002x^2+0.005x-0.029 where x is the speed of the car in miles per hour.How can I rewrite the function so that x represe
1. 1 answer
2. 350 views
What would the functionH(x)=0.002x^2+0.005x-0.029 look like?
1. 3 answers
2. 408 views
I am a number between 20 and 30.When you put me into 6 equal groups,there is an even number in each group and 1 left over. i
1. 1 answer
2. 424 views
A chain is held on a frictionless table with 1/3 of its length hanging over the edge. If the chain has length L = 33 cm and mass
1. 4 answers
2. 995 views
what is the rule of a table with x numbers of 1, 4, 8, and 9 and y numbers of 5, 14, 26, and 29
1. 1 answer
2. 283 views
Use the product rule to find the derivative of (2x^2 + 3)(3x + 5).
1. 1 answer
2. 346 views
Use the product rule to find the derivative of (2x^2 + 3)(3x + 5).
1. 3 answers
2. 848 views
lim sin2xx->0 ----- x How do I get rid of the x on the bottom in order to solve this problem? Thanks!
1. 1 answer
2. 406 views
At a county fair, a boy takes his teddy bear on the giant Ferris wheel. Unfortunately, at the top of the ride, he accidentally
1. 3 answers
2. 1,107 views
insert grouping symbols into 2x3^3+4 to get it to equal 4374 and 279,936.
1. 1 answer
2. 350 views
350.ml of .25M KOH is reacted with 250.ml of .30M H3PO4. Determine which is the limiting reagent, the molarity of the salt
1. 3 answers
2. 577 views
the measure of an angle is 7 less than 10 times its supplement
1. 4 answers
2. 722 views
given the graph of f(x) = x sinx, 0<=x<=2piassuming that a quantity y changes at a rate of y' = xsinx, find by how much it will
1. 2 answers
2. 594 views
given the graph of f(x) = x sinx, 0<=x<=2piassuming that a quantity y changes at a rate of y' = xsinx, find by how much it will
1. 2 answers
2. 959 views
given the graph of f(x) = x sinx, 0<=x<=2piassuming that a quantity y changes at a rate of y' = xsinx, find by how much it will
1. 1 answer
2. 379 views
Expand [1+x^2(1+x)]^7 in ascending powers of x as the term in x^8.
1. 3 answers
2. 565 views
Janice said that if you cut a cube into two parts you form 2 smaller cubes. Ling said that 2 rectangular prisms are formed. Who
1. 1 answer
2. 407 views
The widths (in meters) of a kidney-shaped swimming pool were measured at 3-meter intervals as indicated in the figure. Use the
1. 3 answers
2. 2,383 views
In 69 games, a player blocks 234 shots, what is his blocks per ratio?
1. 1 answer
2. 344 views
Need a lot of help!Specific gravity of a drug is 0.9815. How many cc of this drug should be administered for a dose of 215mg?
1. 5 answers
2. 367 views
When a particle is located a distance x meters from the origin, a force of cos(x/4) newtons acts on it. How much work W is done
1. 3 answers
2. 565 views
Can you please give me a example of a - and + multi step equation
1. 1 answer
2. 320 views
An 845-N sled is pulled a distance of 190 m. The task requires 1.70 104 J of work and is done by pulling on a rope with a force
1. 3 answers
2. 464 views
Karen has a mass of 62.60 kg and she rides the up escalator at Woodley Park Station of the Washington D.C. Metro. Karen rode a
1. 2 answers
2. 927 views
A 40.7kg wagon is towed up a hill inclined at 18.1 degrees with respect to the horizontal. The tow rope is parallel to the
1. 1 answer
2. 958 views
The tension in a string from which a 5.4kg object is suspended in an elevator is equal to 53.02N. What is magnitude of the
1. 2 answers
2. 534 views
A ﬁgure skater begins spinning counterclockwise at an angular speed of 4.6π rad/s. During a 4.6s interval, she slowly pulls
1. 3 answers
2. 1,647 views
A girl sitting on a merry-go-round movescounterclockwise through an arc length of 3.36m. If the girl’s angular displacement is
1. 2 answers
2. 1,360 views
A diver performing a double somersault spins at an angular speed of 4.5 π rad/s precisely 0.70s after leaving the platform.Assu
1. 3 answers
2. 1,492 views
Complete and balance the following equation:Cr2O7{2-}(aq)+CH3OH(aq)-->HCO2H(aq)+Cr{3+}(aq) Any feedback would be great, thank
1. 2 answers
2. 1,004 views
Cytochrome, a complicated molecule that we will represent as CyFe2+, reacts with the air we breathe to supply energy required to
1. 1 answer
2. 663 views
Consider the voltaic cellZn(s) + Cu{2+}(aq)--> Zn{2+}(aq)+Cu(s) {}=charge Under standard conditions, what is the maximum
1. 4 answers
2. 7,300 views
A voltaic cell utilizes the following reaction and operates at 298K3Ce{4+}(aq)+Cr(s)--->3Ce{3+}(aq)+Cr{3+}(aq) {}=Charge What is
1. 1 answer
2. 646 views
A voltaic cell utilizes the following reaction and operates at 298K3Ce{4+}(aq)+Cr(s)--->3Ce{3+}(aq)+Cr{3+}(aq) {}=Charge What is
1. 4 answers
2. 3,045 views
Calculate the cell potential for this voltaic cell at 298K if it is constructed using solutions of .25M Ni(NO3)2 and .01M
1. 2 answers
2. 646 views
Jim begins a job with a starting salary of 27000 dollars. she is guaranteed a raise of 4.75% each year. Sarah also starts a job
1. 3 answers
2. 534 views
An external force F is holding a bob of mass 725 g in a stationary position. The angle that the massless rope makes with the
1. 4 answers
2. 893 views
graph each set of lines to form a triangle. find the area and perimeter.y=2, x=5 , and y=x Answer is Area = 4.5 units Perimeter
1. 4 answers
2. 1,501 views
This is a projectile motion question.A ball with a mass of .4 kg, initially at rest is kicked directly toward a 3 meter fence
1. 2 answers
2. 569 views
In a 1.0× 10–4 M solution of HClO(aq), identify the relative molar amounts of these species from most to least: HClO, OCl,
1. 1 answer
2. 803 views
An object is dropped from rest.What is its instantaneous speed when it has been in motion for 7 s? The acceleration of gravity
1. 3 answers
2. 667 views
Can you help
1. 1 answer
2. 264 views
A cylindrical slime tank is placed so that the axis of the cylinder is horizontal. Find the fluid force on a circular end of the
1. 4 answers
2. 767 views
A spherical oil tank with a radius of 10 feet is half full of oil that weighs 60 pounds per cubic foot. Its top is 6 feet
1. 1 answer
2. 489 views
In guinea pig, short hair (L) is dominant to long hair (l) and the heterozygous condition for yellow coat (Y) and white coat (y)
1. 4 answers
2. 2,059 views
Two stars are 4.40 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of
1. 2 answers
2. 573 views
Calculate the momentum of a 0.1 kg rifle bullet traveling 500 m/s. Answer in units of kg•m/s
1. 1 answer
2. 458 views
What is the value of w (work) when 1.3 molesof H2 expands from 25 liters to 50 liters against a constant external pressure of 1
1. 2 answers
2. 811 views
Calculate the entropy change when 4.88 g of H2 reacts with O2 according to thereaction 2H2(g) + O2(g)→2H2O(ℓ)at 298 K and 1
1. 2 answers
2. 610 views
Calculate the pH of a 0.44 M aqueous solutionof NH4Cl. Kb = 1.8 × 10−5 . I've tried used the Ka=Kw/Kb equation then used the
1. 4 answers
2. 1,562 views
Calculate the pH of a 0.44 M aqueous solutionof NH4Cl. Kb = 1.8 × 10−5 . I've tried used the Ka=Kw/Kb equation then used the
1. 7 answers
2. 849 views
What was the purpose of the Adams-Onis Treaty?Can some help me answer this question?? Ms. Sue??
1. 2 answers
2. 665 views
Calculate the concentration of H3O+ present in 0.377 M H2CO3. Answer in units of mol/L I know the Ka of H2CO3 is 4.3E-7. But I
1. 5 answers
2. 756 views
Alright, this time, I know I have not mistyped my answer.Find the initial concentration of the weak acid or base in an aqueous
1. 3 answers
2. 496 views

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