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For the strong acid solution 9.7×10−3 , determine (H3o+)and (OH-)
1. 1 answer
2. 435 views
For the strong acid solution 9.7×10−3 , determine (H3o+)and (OH-)
1. 1 answer
2. 429 views
Andrew measures the amount of a very unstable substance to be 100 moles. The half-life of this substance is 3 days (after 3
1. 0 answers
2. 689 views
Gil rolls a number cube 78 times. How many times can he expect to roll an odd number greater than 1??
1. 9 answers
2. 4,841 views
A baseball player reaches base 35% of the time. How many times can he expect to reach base in 850 at-bats?
1. 2 answers
2. 975 views
Vanessa pushes a box with 50 N of force. The box accelerates 2 m/s2 for 10 seconds. What is the mass of the box?
1. 3 answers
2. 2,000 views
write a skeleton equation for this reaction hydrogen iodide(g)->hydrogen+iodide(G)
1. 1 answer
2. 1,108 views
A scuba diver takes a 2.3L balloon from the surface, where the pressure is 1.0atm and the temperature is 37degrees C, to a depth
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2. 2,048 views
How many grams of hydrogen are collected in a reaction where 1.80L of hydrogen gas is collected over water at a temperature of
1. 1 answer
2. 635 views
A heliox deep-sea diving mixture delivers an oxygen partial pressure of 0.20 atm when the total pressure is 13.0atm .What is the
1. 1 answer
2. 1,189 views
A rock is thrown horizontally off of a cliff. It starts with a velocity of 4.2 m/s and the cliff is 68.2 m high.How far out from
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2. 666 views
The grocery store sells kumquats for $4.25 a pound and Asian pears for $2 a pound. Write an equation in standard form for the
1. 1 answer
2. 1,655 views
A ladder leaning against a building makes a 40 degree angle with the ground. The top of the ladder reaches 10 feet above the
1. 1 answer
2. 2,847 views
Jnuary 1, 1990 was a Monday. What day of the week was february 1, 1990 ?
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2. 452 views
Jan and Nika ride their bikes. Jan rides 5 miles per hour for 1 hour then rides at ten miles per hour for 30 minutes.Nika rides
1. 1 answer
2. 2,219 views
1. Justice Stephen Breyer stated, “people need to understand the importance of the Court as an institution, even though the
1. 12 answers
2. 553 views
It is given that the straight line passing through (2,1)and perpendicular to L.
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2. 338 views
the equation of striaght line is 2x-3y+8=0 find the equation of the straight line passing through (4,-2)and parallel to L
1. 1 answer
2. 535 views
What is the angular momentum (in kilogram-meter^2/second) of a 300.0 g ball rotating on the end of a string in a circle of
1. 1 answer
2. 1,065 views
To produce 3.00 L of a 1.9 M solution of NaOH, how many grams of NaOH must be dissolved?
1. 1 answer
2. 708 views
ok so the point are A(3,0) and B(-4,6)and the question asks : the images of points A and B after a reflection in the line y=x.
1. 2 answers
2. 1,180 views
The figure below shows two current carrying wires and the directions of the currents they carry. The wires carry the following
1. 2 answers
2. 3,702 views
I am having a bit of trouble with the question stated below. I am home-schooled and learning math on your own has proven to be
1. 1 answer
2. 632 views
for each of the molecules below, show the dipole you would expect. you must show the direction of the dipole - arrow head
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2. 1,095 views
Addition of which of the following substances will increase the solubility of CuCO3 (s) in water ?CuCO3 ---- Cu^2+ (aq) +2
1. 4 answers
2. 3,999 views
Simplify: ((2x^n)^2 - 1)/(2x^n-1)where x is an integer and n is a positive interger. for this one igot the answer the same as
1. 6 answers
2. 521 views
is the product of two linear functions always a quadratic function? Explain..
1. 1 answer
2. 904 views
Distinguish between longitudinal and transverse waves. Do all waves fall into one or the other of these categories? If not, give
1. 1 answer
2. 892 views
Simplify: ((2x^n)^2 - 1)/(2x^n-1)where x is an integer and n is a positive interger.
1. 1 answer
2. 456 views
michelle weighs 900 N. How much pressure does she apply when she stands on her head, if the part of her head touching the floor
1. 0 answers
2. 409 views
can someone please tell me what Luisa Santiago has to do with the role of women in a Chronicle of a Death Foretold by Gabriel
1. 0 answers
2. 432 views
Consider the equation: A + 4B=3C+3D, when equal masses of A and B are reacted, which is limiting?My possible answers are: A)if
1. 4 answers
2. 1,361 views
Consider the reaction of magnesium metal with hydochloric acid to produce magnesium chloride and hydrogen gas. If 3.85 mol Mg
1. 1 answer
2. 887 views
The Greek mathematician Eratosthenes (ca. 276-195 B.C.) measured the circumference of the earth from the following observations.
1. 2 answers
2. 8,612 views
Refer to the following equation: 4NH3 + 7O2= 4NO2 +6HO, How many moles of ammonia would be required to produce 11.9 mol of
1. 2 answers
2. 7,915 views
Verify the given linear approximation at a = 0.Then determine the values of x for which the linear approximation is accurate to
1. 0 answers
2. 1,101 views
An industrial chemical reaction has a rate law: rate = k [C]. The activation energy for the reaction is 3.0000 x 10^4 J/mol and
1. 1 answer
2. 1,522 views
2. Determine the minimum value of the function f(x)= e^(-x) - 2e^x on the interval -1≤x≤2.Answer is minimum value 7.12?
1. 0 answers
2. 518 views
I have no idea how to do this question. Would be appreciated if someone help =)The velocity of a car is given by
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2. 486 views
1.Determine the maximum value of the function f(x)= 5^x -x^5 on the interval 0≤x≤≤2.2. Determine the minimum value of the
1. 1 answer
2. 1,035 views
At a given temperature, the elementary reaction A <=> B in the forward direction is first order in A with a rate constant of
1. 1 answer
2. 3,269 views
Determine the point on the curve y^2=4x that is closest to the point (1,0)a) (0,0) b) (1,2) c) (0.5,sqrt of 2)
1. 1 answer
2. 1,136 views
Determine the absolute extreme values of f(x)=4√x -2x on the interval [1,4]I found the derivative of f(x)=4√x -2x
1. 1 answer
2. 498 views
What values of x is there an absolute minimum for the function y= -1/3x^2 + 2x?I found the derivative of the function which is
1. 2 answers
2. 531 views
The fuel efficiency, E, in litres per 100 km, for a car driven at speed v, in km/h is E(v)=1600v/(v^2+6400)a)If the speed limit
1. 1 answer
2. 927 views
Could someone help me with these questions.If an equation s(t)=t^3 - 2t^2 + 1 describes an object's motion in metres, at what
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2. 1,084 views
Could someone help me with these questions.If an equation s(t)=t^3 - 2t^2 + 1 describes an object's motion in metres, at what
1. 0 answers
2. 537 views
How many moles of sodium chloride (salt) can be made from 6 moles of chlorine?
1. 5 answers
2. 1,036 views
a 5.00-g sample of octane is burned in a bomb calorimeter containing 2.00x10^2 h h2o. how much energy, in cal,is released if the
1. 1 answer
2. 1,457 views
If someone could give me an example of when developmental homeostasis works in an animal, and when it doesn't.Thanks!!!
1. 0 answers
2. 425 views
One side of a triangle is half the longest side. The third side is 9 meters less than the longest side. The perimeter is 61
1. 1 answer
2. 2,052 views
A 200-L iron tank has a mass of 36 kg. a) Will it float on seawater if empty? b) What mass of potatoes could be added such that
1. 1 answer
2. 1,153 views
A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft
1. 0 answers
2. 721 views
A wire having mass per unit length of 0.440 g/cm carries a 2.80 A current horizontally to the south. What are the direction and
1. 1 answer
2. 703 views
A penny is placed at the outer edge of a disk (radius = 0.159 m) that rotates about an axis perpendicular to the plane of the
1. 0 answers
2. 683 views
A penny is placed at the outer edge of a disk (radius = 0.159 m) that rotates about an axis perpendicular to the plane of the
1. 3 answers
2. 2,148 views
A 32.2-kg child swings on a rope with a length of 6.06 m that is hanging from a tree. At the bottom of the swing, the child is
1. 2 answers
2. 783 views
A 3-kg stone is dropped from a height of 100 m. Find its kinetic and potential energies when it is 50 m from the ground.
1. 2 answers
2. 6,917 views
I have a homework pqage for kindergarten that says Petal Patterns. Label each pattern. I'm not sure what the teacher is looking
1. 2 answers
2. 362 views
1) I can't finish my homework due to this one question, please tell me where I can find this question, thanks!What are levels of
1. 2 answers
2. 488 views
Rachel and Lindsay are in third place in a race. Due to a time penalty, they must start the next leg 90 minutes after the second
1. 1 answer
2. 2,009 views
a ball is thrown upward at a speed of 12 m/s. It will reach the top of its path in about:a) 0.6 sec b) 1.2 sec c) 1.8 sec d) 2.4
1. 3 answers
2. 1,676 views
A 200g mass attached to a horizontal spring oscillates at a frequency of 2.0 Hz. At one instant, the mass is at x= 5.0cm and has
1. 1 answer
2. 3,167 views
How can I group white substances into 2 groups according to their properties&list the properties of each group?Calcium
1. 1 answer
2. 1,066 views
How can I group white substances into 2 groups according to their properties&list the properties of each group?Calcium
1. 0 answers
2. 588 views
The string of a certain yo-yo is 80 cm long and will break when the force on it is 10 N. What is the highest speed the 200 g
1. 0 answers
2. 344 views
A bicycle and its rider together have a mass of 80 kg. If the bicycle's speed is 6m/s, how much force is needed to bring it to a
1. 3 answers
2. 15,068 views
What volume of 6.43% (wt.vol.) NaOCl solution is required to oxidize 221 mg of 9-fluorenol to 9-fluorenone?I'm not to sure of
1. 2 answers
2. 570 views
The product of two consecutive odd intergers is 143. Find the intergers.
1. 1 answer
2. 507 views
I am working on an assignment in which I need to put together a pro forma balance sheet. At the end of the assignment, I need to
1. 0 answers
2. 455 views
A person dives off the edge of a cliff 33m above the surface of the sea below. Assuming that air resistance is negligible, (a)
1. 2 answers
2. 1,184 views
The perimeter of a geometric figure is the sum of the lengths of its sides. If the perimeter of a pentagon is 48 meters, find
1. 2 answers
2. 959 views
Please tell me where I can find Articles about Energy Resource and issues.Thanks!
1. 1 answer
2. 459 views
calculate the energy required to heat 1.00L of ice at -50.0C to steam at 180.0C
1. 1 answer
2. 1,024 views
What is the y-intercept of 4x+8y=12?
1. 1 answer
2. 401 views
A farmer keeps hens and rabbits on his farm. One day, he counted a total of 70 heads and 196 legs. How many more hens than
1. 1 answer
2. 2,726 views
Sandy decided to give one-fourth of her CDs to Jenn. Then she gives one-half of the remaining CDs to Bob. If she is left with 6
1. 3 answers
2. 652 views
A wall hanging is x inches wide and has a height of 4x inches. If the perimeter is 40inches, what is the height in inches?Please
1. 1 answer
2. 398 views
Find the area of each circular segment to the nearest tenth, given its central angle, x, and the radius of the circle.x= pi/8,
1. 1 answer
2. 1,159 views
I am not exactly sure of what I'm supposed to do in the following question:Describe and correct the error, given the functions
1. 3 answers
2. 609 views
A sample of cesium metal reacted completely with water, evolving 47.0 mL of dry H2 at 31°C and 769 mmHg. What is the equation
1. 1 answer
2. 484 views
A student investigates skateboarding down a slope. She times how long it takes her to skateboard between two lines on a sloping
1. 1 answer
2. 734 views
Suppose the mass of the wing is 0.258g and the effective spring constant of the tissue is 4.00E-4 N/m. Distance d1 = 3.03 mm and
1. 0 answers
2. 510 views
Am doing Autism and I have to give farther information. ThanksThe cognitive part: I have...(1) Selecting attention, I have they
1. 0 answers
2. 841 views
How can you have Motivation, Forecast and Orientation in speech intorduction?like show the audience pictures etc?..thanks!
1. 1 answer
2. 426 views
Am doing a project about Autism, what are the Cogngntive and pscohosocial of Autism and where can I find them?Thanks!
1. 1 answer
2. 530 views
1.Calculate the pH of a solution prepared by mixing 20mL of the .07222M aspirin solution with 10mL of .2M NaOH.2. Calculate the
1. 10 answers
2. 1,139 views
Aspirin is a weak acid with a Ka of 3.0x10^-5. Find the pH of a solution by dissolving .65g of aspirin in water and diluting it
1. 5 answers
2. 1,200 views
In about 100 words, explain what kinds of features of characteristics a midsize business would seek in its electronic commerce
1. 0 answers
2. 1,092 views
Given that a√b^2-c = 5k, find the value of:1. k when a = 3, b = 6 and c = 20 2. c when a = 4, b = 7, and k = 11 Explain your
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2. 871 views
A shopper in a supermarket pushes a loaded31 kg cart with a horizontal force of 12 N. The acceleration of gravity is 9.81 m/s2 .
1. 2 answers
2. 573 views
A shopper in a supermarket pushes a loaded31 kg cart with a horizontal force of 12 N. The acceleration of gravity is 9.81 m/s2 .
1. 1 answer
2. 623 views
Ionization is when an electron is removed from an atom and ionization energy is the energy required to do this. "Electrons
1. 6 answers
2. 907 views
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told to look up
1. 2 answers
2. 838 views
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up
1. 2 answers
2. 549 views
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications' and was told you look up
1. 0 answers
2. 434 views
I have an assignment to 'Research ionization energy levels and come up with 3 real world applications'. I'm not so sure how to
1. 4 answers
2. 532 views
What distance will a 10 hp motor lift a 2000 lb elevator in 30 s? What was the average velocity of this elevator during the
1. 2 answers
2. 772 views
An 83.2-kg propeller blade measures 2.24m end to end. Model the blade as a thin rod rotating about its center of mass. It's
1. 1 answer
2. 631 views
If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the
1. 1 answer
2. 472 views

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