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2x+3y=135x+2y=16
1. 1 answer
2. 267 views
Calculate the pH of a solution made by adding 3.20 g of lithium oxide (Li2O) to enough water to make 1.210 L of solution. (Kw =
1. 1 answer
2. 673 views
Calculate the hydronium ion concentration and pH in a 0.037 M solution of sodium formate, NaHCO2.hydronium ion concentration i
1. 2 answers
2. 1,033 views
select the stronger base. how do i know this?1.SeO42− or SO42− 2.BrO− or BrO2−
1. 1 answer
2. 867 views
Calculate the molar concentration of OH− ions in an 1.79 M solution of hypobromite ion (BrO−; Kb = 4.0 10-6).
1. 1 answer
2. 763 views
a chinook salmon
1. 1 answer
2. 367 views
a moving walkway at an airport has a speed v1 and a length l. a woman stands on the walkway as it moves while the man in a hurry
1. 1 answer
2. 1,406 views
what injuries did they get in the lowell Massachusetts textile mills ?what did the implorers do about it ?
1. 1 answer
2. 495 views
At a party there are 33 students over age 21 and 22 students under age 21. You choose at random 3 of those over 21 and
1. 1 answer
2. 518 views
how would doubling the concentration of the nucleophile affect the rate of an sn2 reaction?
1. 1 answer
2. 665 views
A computer takes 2 seconds to compute a particular definite integral accurate to 4 decimal places. Approximately how long does
1. 1 answer
2. 864 views
Rx = 3000 cGy in 10 fractions, whole brain Rt and Lt laterals, KD Siemens 6x. The collimator is set for 22 X 16 cm2 portal films
1. 0 answers
2. 523 views
If a person runs 5 miles in 1 hour, how far will they run in 5 minutes?
1. 1 answer
2. 420 views
) The circle graph below gives the inventory of the women's departmentof a store. Coats $49,737 Dresses $47,208 Skirts Lingerie
1. 1 answer
2. 479 views
a student dissolves 80 mg of a crude product in 4.5 mL( the minimum required) of methanol at 25 deg C . She cools the solution
1. 3 answers
2. 1,505 views
Suppose a compound Z had a partition coefficient of 8.0 in ether-water. If 10.0 g of Z was dissolved in 100 mL of water, and if
1. 2 answers
2. 1,709 views
what is formula to show how much time it took car to travel 7km is .4hrs
1. 1 answer
2. 319 views
What are the basic elements of an effective medical office financial policy?
1. 0 answers
2. 551 views
for 2Al2O3----> 4Al(s) + 3O2the question is what is the heat change for the formation of 1 mol of aluminum oxide from its
1. 2 answers
2. 912 views
Suppose a laboratory has a 26 g sample of polonium-210. The half-life of polonium-210 is about 138 days.?
1. 0 answers
2. 806 views
a ball is dropped from a height of 10 ft. if the ball's height after t sec is modeled by the following equation h(t)=-16t^2+10.
1. 1 answer
2. 559 views
Roses were planted 100 cm apart around a rectangular garden. There were no roses at the corners. They started 1 m from each
1. 1 answer
2. 735 views
Ceres is a dwarf planet located in the asteroid belt between the orbits of mars and Jupiter. the radius of Ceres is 4.76 x 10^5
1. 1 answer
2. 2,607 views
im blank today please help thanks!!!!!!!!!!!It takes a car 1.75 h to go from mile marker 10 to mile marker 115. What is the
1. 1 answer
2. 770 views
Calculate pH of NH4OH which is 1%ionized
1. 1 answer
2. 442 views
Calculate the net charge on a substance consisting of a combination of 8.9 × 1013 protons and 2.6×10 13 electrons. The
1. 0 answers
2. 654 views
How can knowing about the chemical properties of different elements help a society become more sustainable?
1. 1 answer
2. 664 views
assuming the reaction goes to completion, determine the final concentration of NH4Cl in the calorimeter.NH4Cl(s)+ H2O(l)->
1. 3 answers
2. 881 views
If $1000 is invested in an account that earns 11.75%, compounded annually, what will the account balance be after 12 years?
1. 1 answer
2. 1,151 views
moment of inertia of a ring perpendicular to tangent and its plane
1. 2 answers
2. 651 views
A street light is mounted at the top of a 6-meter-tall pole. A man 2 m tall walks away from the pole with a speed of 1.4 m/s
1. 2 answers
2. 4,375 views
calculate how to make 10 mL of 15:85 ethyl acetate:hexane solutionfrom 2 mL of 5:95 ethyl acetate:hexane, using pure hexane and
1. 1 answer
2. 549 views
I have to state whether these equations are parallel or perpendiculary=4x+6 y-4x=-1
1. 1 answer
2. 385 views
Sarah shoots a toy dart vertically downward at 11.7 m/s at Mark standing on the ground below. Calculate the dart's velocity
1. 0 answers
2. 436 views
Sarah shoots a toy dart vertically downward at 11.7 m/s at Mark standing on the ground below. Calculate the dart's velocity
1. 1 answer
2. 580 views
Hello i read the book bridge to terabitha and i have an assignment i need some help on.i need to pick 5 characters and describe
1. 1 answer
2. 606 views
how do u multiply a positive number and a negitave number
1. 2 answers
2. 405 views
Draw the condensed structures of the esters formed from the following reactants. Name the compound in each case.(a) butanoic
1. 0 answers
2. 431 views
There are 5 purple, 3 yellow, and 4 pink rocks in a jar. What is the chance of getting a purple rock if it was pulled out of the
1. 1 answer
2. 1,172 views
Using condensed structural formulas, write a balanced chemical equation for each of the following reactionsa)addition of H2O to
1. 0 answers
2. 610 views
2x+4 (2x+6) I did this and ended up with a decimal number. I distributed then combined like terms.
1. 1 answer
2. 283 views
what is the difference between primary walls and secondary walls in plants. (specifically sclerencyma cells- which have
1. 0 answers
2. 419 views
Draw the three distinct geometric isomers of 2,4-hexadiene.i can draw what it is giving. but i do not get what the geometric
1. 1 answer
2. 1,295 views
A Cessna 350 must reach a speed of 35 m/s for takeoff. If the plane accelerates at a steady 3.8 m/s2, how long must the runway
1. 2 answers
2. 419 views
When moving at highway speed, a Triumph America motorcycle is capable of accelerating at 2.1 m/s2. At this rate, how long does
1. 1 answer
2. 446 views
A ping pong ball is rolling across a table at 2.1 cm/s. When the ball is 1.32 m away from the edge your little brother starts to
1. 1 answer
2. 447 views
Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr.(a) How many beta particles are emitted in 47.0 s by a 2.39-mg
1. 1 answer
2. 578 views
When moving at highway speed, a Triumph America motorcycle is capable of accelerating at 2.1 m/s2. At this rate, how long does
1. 0 answers
2. 472 views
The minivan your mom lets you drive accelerates from 12 m/s to 24 m/s in 6.5 s. How far does it travel in this time? Assume
1. 1 answer
2. 335 views
The average energy released in the fission of a single uranium-235 nucleus is about 3. 10-11 J. If the conversion of this energy
1. 1 answer
2. 1,637 views
A 73-kg person is accidentally exposed for 215 s to a 16-mCi source of beta radiation coming from a sample of 14C.What is the
1. 0 answers
2. 819 views
I am not sure if there is an equation for this problem or wut??A 73-kg person is accidentally exposed for 215 s to a 16-mCi
1. 5 answers
2. 591 views
art's age is two thirds cal's age, and bob is three years older than art. the sum of their three ages is 45. find the age of
1. 1 answer
2. 468 views
Two bulldozers clear homes from a 20-acre tract of land. One works twice as fast as the other. It takes them three days to clear
1. 0 answers
2. 478 views
The half-life for the process 238U 206Pb is 4.5 109 yr. A mineral sample contains 45.9 mg of 238U and 16.8 mg of 206Pb. What is
1. 3 answers
2. 1,438 views
how many real roots does the polynomial 2x^5+8x-7 have
1. 3 answers
2. 1,135 views
The mean of a normal probability distribution is 100 and the standarddeviation is 8. About what percent of the observations lie
1. 2 answers
2. 560 views
Mathematical sequences can be used to model real life applications. Suppose you want to construct a movie theater in your town.
1. 1 answer
2. 599 views
I tried solving these problems and get stuck . Can you please tell me what am I suppose to do next or did I do them all wrong1.
1. 2 answers
2. 398 views
Write balanced equations for the following reactions. (Use the lowest possible coefficients. Omit states-of-matter in your
1. 3 answers
2. 1,012 views
lithium citrate comes in 300 mg/5ml. the doctor calls and asks you to compound lithium citrate ''light'' (75mg/5ml). How would
1. 1 answer
2. 365 views
what is the difference between hydrofluoric acid and hydrogen fluoride. arnt they both HF?
1. 1 answer
2. 469 views
what is the symbol for the element that has 78 protons76 electrons 117 neutrons and a +2 net charge? i thought it was ^195Os^+2
1. 1 answer
2. 1,570 views
If a clock in an airplane is found to slow down by 5 parts in 1013, (i.e., ∆t/∆to = 1.0 + 5.0 × 10. −13), at what speed
1. 2 answers
2. 489 views
A sodium-vapour lamp illuminates, with monochromatic yellow light, two narrow slits that are 1.00 mm apart. if the viewing
1. 2 answers
2. 1,066 views
I need help on a hw question.Can a company bill you if you just give them your billing address or do they need a credit card
1. 1 answer
2. 770 views
3 charges sit on vertical equilateral triangle the side of each is 30.0 cm. if the triangle are A= +4.0 uC B=+5.0 uC and C=+6.0
1. 4 answers
2. 628 views
The field of an unknown charges is first mapped with a 1.0 X 10^-8 C test charges, then repeated with 2.0 X 10^-8 C test charge.
1. 1 answer
2. 571 views
A 0.8 kg block of wood has an initial velocity of 0.25 m/s as it begins to slide across a table. The block comes to rest over a
1. 2 answers
2. 790 views
3 charges sit on vertical equilateral triangle the side of each is 30.0 cm. if the triangle are A= +4.0 uC B=+5.0 uC and C=+6.0
1. 1 answer
2. 818 views
Circle O is defined by the equation x2 + (y - 2)2 = 25. Plot the center of Circle O and type in the coordinates of one point
1. 2 answers
2. 1,325 views
typically when paired with a boy in a laboratory play session a two year old girl os likely to
1. 3 answers
2. 747 views
how might the environmental impacts of deforestation and sprawl affect the human community of Pinchot
1. 1 answer
2. 892 views
A tire contains air at a pressure of 2.8 bar at 10C. If the tire’s volume is unchanged, what will the air pressure in it be
1. 1 answer
2. 780 views
How much force is needed to give a 5-kg box and upward acceleration of 2 m/s2?
1. 3 answers
2. 2,338 views
How fast must a fall be thrown upward to reach a height of 12 m?
1. 2 answers
2. 444 views
The acceleration of gravity on the surface of Venus is 8.9 m/s2. Would a ball thrown upward on Venus return to the ground sooner
1. 1 answer
2. 1,336 views
. The brakes of a car are applied to give it an acceleration of -3 m/s2. The car comes to a stop in 5 s. What was its speed when
1. 3 answers
2. 905 views
. Three forces, each 10 lb, act on the same object. What is the maximum total force they can exert on the object? The minimum
1. 1 answer
2. 2,346 views
A 375 g sample of well water is found to contain 17.0 mg of lead. How much lead (in parts per million) is in the well water?
1. 2 answers
2. 1,538 views
The Nutrex Corporation wants to calculate its weighted average cost of capital. Its target capital structure weights are 40
1. 0 answers
2. 636 views
Faulkner's Fine Fries, Inc. (FFF), is thinking about reducing its debt burden. Given the following capital structure information
1. 1 answer
2. 720 views
P5For the following projects, compute NPV, IRR, MIRR, profitability index, and payback. If these projects are mutually
1. 0 answers
2. 686 views
Find the IRR and MIRR of a project if it has estimated cash flows of $5,500 annually for seven years if its year-zero investment
1. 0 answers
2. 739 views
For a person at rest, the function p(t) = -20 cos(300˚t) + 100 models blood pressure, in millimeters of mercury ( mm Hg), at
1. 1 answer
2. 1,036 views
why does The sodium-potassium pump move potassium ions into and sodium ions out of a cell down a protein canal?
1. 0 answers
2. 564 views
pleas help me with my home work 00703600
1. 1 answer
2. 441 views
Why is x-1 not a factor of f(x)= 4x^3+8x^2+x-3?
1. 1 answer
2. 290 views
log(x^2+2x-3/x^2-4)-log(x^2+7x+6/x+2)
1. 0 answers
2. 289 views
a small plane sitting on a runway 5 miles west and 2 miles north of town is scheduled to fly to a second runway 17 miles east
1. 1 answer
2. 557 views
find the area of the earth's surface within the Arctic Circle; that is, in latitude north 66° 32' N. thank you! :D
1. 0 answers
2. 431 views
Window glass formerly was made by gathering a lump of molten glass on the end of a hollow rod blowing it into the form of a
1. 0 answers
2. 651 views
the area of the total surface of a polyhedron weighing 64 lb. is 340 sq. in. what is the surface of a similar polyhedron made of
1. 1 answer
2. 613 views
the area of the total surface of a polyhedron weighing 64 lb. is 340 sq. in. What is the surface of a similar polyhedron made of
1. 1 answer
2. 517 views
A light is placed 5 ft. from the center of a globe 3 ft. in diameter. Find the area of the illuminated portion.thank you!
1. 1 answer
2. 2,728 views
(a) calculate the number of kilocalories needed to climb 232 stair steps (116 steps per minute for 2 min.)*climbing stairs
1. 0 answers
2. 605 views
(a) a person in a wheelchair approaches a 0.50-m-high ramp with a speed of 3.5 m/sec. calculate the final speed of the
1. 1 answer
2. 860 views
your bike tire has a radius of 14 inches. If your tire makes 100 revolutions, how many feet does your bike travel?
1. 0 answers
2. 582 views
Your bike tire has a radius of 14 inches. If you travel a distance of 56 feet on your bike, how many complete revolutions did
1. 0 answers
2. 710 views
AmericansDespite its ethnic diversity, the United States has managed to absorb bits and pieces of many cultures and weave them
1. 1 answer
2. 651 views

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