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Questions Asked on March 23, 2013

Calculate the molarity of the nitrate ion in a 0.111 M solution of calcium nitrate?so would I have to find the number of moles
1. 4 answers
2. asked by Amber
3. 774 views
Uncle Ritchie has some $10 bills in his wallet. He shares all of them equally among his 4 nieces and nephews. Each of the nieces
1. 1 answer
2. asked by Cherie
3. 1,317 views
Find the slope of the graph of the function at the given point. (If an answer is undefined, enter UNDEFINED.)x^3 + y^3 = 14xy,
1. 1 answer
2. asked by akash
3. 618 views
Find dy/dx.y^3 = 8x^3 + 4x
1. 2 answers
2. asked by akash
3. 290 views
Find dy/dx.7xy^3 − x^2y = 6
1. 1 answer
2. asked by akash
3. 758 views
What are significance/alpha levels and how does using a one versus a two tailed test affect significance levels?
1. 0 answers
2. asked by Carson
3. 365 views
A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the
1. 2 answers
2. asked by Nicola
3. 4,812 views
A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the
1. 1 answer
2. asked by Nicola
3. 1,261 views
What are significance/alpha levels and how does using a one versus a two tailed test affect significance levels?
1. 1 answer
2. asked by Carson
3. 423 views
I have a couple questions I need help on.Which model is most appropriate for the data set? (-1,20),(0,10),(1,5),(2,20) And How
1. 3 answers
2. asked by Kristine
3. 466 views
What is the reduction half-reaction for the following unbalanced redox equation?Cr2O7^2– + NH4^+ Cr2O3 + N2 A.Cr2O3-->
1. 11 answers
2. asked by cassie
3. 2,113 views
What coefficient of H+ balances the atoms in the following half-reaction?H^+ + MnO2 Mn^2+ + H2O A.1 B.2 C.3 D.4 I think this is
1. 3 answers
2. asked by cassie
3. 1,615 views
At the surface of a freshwater lake the pressure is 102 kPa.(a) What is the pressure increase in going 34.7 m below the surface?
1. 0 answers
2. asked by ray
3. 909 views
what is the pH of a solution prepared by adding 0.259g of ammonium chloride to 115mL of water? Kb of NH3 is 1.8x10^-5
1. 1 answer
2. asked by Jill
3. 1,568 views
During a spontaneous chemical reaction, it is found that δSsys < 0. This means __________a. δSsurr < 0 and its magnitude is <
1. 1 answer
2. asked by Flavia
3. 1,200 views
A leaf frozen into a pond in winter is 40mm below the surface of the ice. How far does the leaf seem to be ?(n=1.31)
1. 0 answers
2. asked by Susan
3. 575 views
A coin is placed at a focal point of a converging lens. Is an image formed? If yes, is it real or virtual , erect or inverted,
1. 1 answer
2. asked by Susan
3. 1,269 views
1. What is entropy?2.With every energy transfer, what form of energy is always released? I think 2 is Heat?
1. 0 answers
2. asked by Stephanie
3. 322 views
Find the area of a circular segment of a circle of radius 7cm that sub tends a central angle of 35 degrees?
1. 2 answers
2. asked by Anna
3. 723 views
A birthday candle 4 cm high is 10 cm from a converging lens whose focal length is 15cm. Use a ray diagram on a suitable
1. 0 answers
2. asked by Susan
3. 743 views
A hypodermic syringe is attached to a needle that has an internal radius of 0.303 mm and a length of 3.02 cm. The needle is
1. 0 answers
2. asked by ray
3. 746 views
Calculate the pH of a solution that is 2.00M HF, 1.00M NaOH, and 0.393M NaG (Ka=7.2 x10^-4).The answer I got was 4.76 ..
1. 3 answers
2. asked by Jill
3. 796 views
how many calories would liberated when one mole of steam at 100c condenses to H2O at 100c?
1. 0 answers
2. asked by harun
3. 455 views
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the
1. 1 answer
2. asked by Christina
3. 462 views
Which of the resolutions at Seneca Falls Convention was most inspired by women’s inability to own property? (1 point)
1. 4 answers
2. asked by social studies
3. 736 views
A car rental agency currently has 41 cars available, 28 of which have a GPS navigation system. Two cars are selected at random
1. 1 answer
2. asked by Anonymous
3. 1,937 views
The steel I-beam in the drawing has a weight of 9.03 × 103 N and is being lifted at a constant velocity. What is the tension in
1. 0 answers
2. asked by Christina
3. 1,055 views
Solve equation.-5(s-7) = 15
1. 1 answer
2. asked by Cherie
3. 825 views
A ball is fired from the ground with an initial speed of 1.36 103 m/s (approximately four times the speed of sound) at an
1. 2 answers
2. asked by Nicola
3. 534 views
two spot available and there is 6 men and 4 women what is the probability that a women will be picked?
1. 1 answer
2. asked by justin
3. 294 views
Simplify 2/root 3(49)I solved it as 2 root 3(49) over 49. the system that I entered it in says this is incorrect. Help I need to
1. 1 answer
2. asked by sally
3. 395 views
Three times the square of a number minus twice the same number is 8. Find all such numbers.
1. 3 answers
2. asked by Haelin
3. 2,390 views
An object that is falling or vertically projected into the air has it height, in feet, above the ground given by the formula
1. 1 answer
2. asked by pam
3. 1,429 views
The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy
1. 2 answers
2. asked by Lara
3. 2,414 views
A hollow copper wire with an inner diameter of 0.60mm and an outer diameter of 1.8mm carries a current of 15A. What is the
1. 0 answers
2. asked by Wolf
3. 1,410 views
Case DiscussionDr. Pearson has recently been hired into the Central City Internal Medicine Group as its fifth physician. He has
1. 5 answers
2. asked by Iuliana Pop
3. 1,708 views
What physical quantities are governed by the quantum numbers of an atomic electron?.
1. 1 answer
2. asked by Dee
3. 839 views
If the half-life of a radionuclide is 1 month, is a sample of it completely decayed after 2 months?
1. 2 answers
2. asked by Dee
3. 1,878 views
A small block with mass 0.035 kg slides in a vertical circle of radius 0.425 m on the inside of a circular track. During one of
1. 0 answers
2. asked by Hannah
3. 810 views
Lighting strike: Storm clouds build up large negative charges that dwell in a charge center. Suppose a storm cloud has -25 C in
1. 0 answers
2. asked by Cassie
3. 886 views
What is the hydrogen-ion concentration of a solution that is 0.016M in acetic acid and 0.016M in sodium acetate at 25 Celsius?
1. 1 answer
2. asked by Viv
3. 509 views
Mark is a 30yo businessman who was diagnosed with Crohn’s dz over ten years ago; otherwise, he’s a healthy guy. He’s been
1. 1 answer
2. asked by Anonymous
3. 566 views
What is the hydronium ion concentration of a buffer solution that is 0.10M NaHPO4 and 0.50M NaH2PO4? For H3PO4,Ka1=6.9x10^-3,
1. 3 answers
2. asked by Viv
3. 719 views
Let the bottom edge of a rectangular mirror on a vertical wall be parallel to and h feet above the level floor. If a person with
1. 1 answer
2. asked by black_widow
3. 1,039 views
If G is a group of order 12, the G must have a subgroup of all of the following orders EXCEPTChoose one answer. a. 0 b. 12 c. 2
1. 1 answer
2. asked by black_widow
3. 1,162 views
Solve the inequality //(2x-1)(x+3)/-4/< 1where /x/ is the modulus of x.
1. 2 answers
2. asked by black_widow
3. 299 views
from a rectangular piece of metal sheet of length and breadth 1.60 m and 80 cm respectively, 3 circular sheets of 20 cm radius
1. 1 answer
2. asked by parth
3. 834 views
Hafers, an electrical supply co., sold $4200.00 of equipment to Coates Wiring Inc. Coates signed a promissory note 5-12th with
1. 0 answers
2. asked by Pat
3. 437 views
a yo-yo is spun from rest by pulling on the string with a constant tension of 2.0N. The radius of the inner rod on which the
1. 0 answers
2. asked by kirafreedom
3. 365 views
Consider a solution made by mixing 500.0 mL of 0.04182 M Na2HAsO4 with 500.0 mL of 0.03645 M NaOH. Complete the mass balance
1. 1 answer
2. asked by Jackie
3. 4,364 views
A quantity of water at 87 degrees C is cooled at a rate of 2844 MJ/h. After 40 minutes, the water has changed to ice, having a
1. 1 answer
2. asked by Dylan
3. 901 views
On dec. 31, 2010 a corporation issued 200,000 face value 12% bonds that mature 10 years from the date of issue. The issue price
1. 0 answers
2. asked by pat
3. 459 views
The mean distance of the sun from the sun is 150 million kilometres.Express this in scientific notation.
1. 1 answer
2. asked by Ankur
3. 470 views
The mean distance of the sun from the sun is 150 million kilometres.Express this in scientific notation.
1. 1 answer
2. asked by Ankur
3. 487 views
solve the problem (1500*30*400)-1/2*(1500*30*400)
1. 1 answer
2. asked by tauranus
3. 374 views
Two kg of water at a temperature of 50 degrees C have 485.3 kJ of heat transferred from them, resulting in a mixture of
1. 0 answers
2. asked by Dylan
3. 790 views
Please tell me which Gas Law equation to use to figure out this problem...A helium balloon at 25°C, 1 atm, has a volume of 2.88
1. 2 answers
2. asked by Pam
3. 709 views
Name two community organization that are involved in supporting or giving redress to water pollution.and explain
1. 1 answer
2. asked by Nokwanda
3. 451 views
A savings account opened 3 months ago now has a balance of Rs. 20,400. If the bank pays 8 percent p.a. Simple interest, how much
1. 0 answers
2. asked by S
3. 507 views
how do we write a thesis statement?
1. 1 answer
2. asked by ma
3. 416 views
if the LCM of first 20 natural numbers is X, then what will be the LCM of first 25 natral numbers
1. 2 answers
2. asked by Meenakshi
3. 857 views
Two fixed charges 1.07mC and -3.28mC are 61.8 cm apart. Where the third charge may be placed so that no net force acts on it
1. 1 answer
2. asked by hamid
3. 1,296 views
An electron of wavelength 1.74*10-10m strikes an atom of ionized helium (He+). What is the wavelength (m) of the light
1. 9 answers
2. asked by Maikol
3. 553 views
Atomic sodium is studied by photoelectron spectroscopy. What is the maximum wavelength of the incident radiation that will
1. 1 answer
2. asked by gluck
3. 358 views
One jar of peanut butter and 3 loaves of bread cost $6.70. Three jars of peanut butter and 1 loaf of bread cost $9.32. Find the
1. 2 answers
2. asked by Shannon
3. 622 views
• A car moves 26 km due east then 14 km due north. It then turns along a path running north-west with 15 km, then 17 km due
1. 3 answers
2. asked by Daniel
3. 462 views
An electron of wavelength 1.74*10-10m strikes an atom of ionized helium (He+). What is the wavelength (m) of the light
1. 1 answer
2. asked by Echoes
3. 520 views
Is every Fermat number 2^(2^n) + 1 composite for n > 4?
1. 0 answers
2. asked by black_widow
3. 312 views
A cart of mass M1 = 5.00 kg and initial speed = 3.00 m/s collides head on with a second cart of mass M2 = 3.00 kg at rest.
1. 0 answers
2. asked by Erin
3. 862 views
3. Which oxidation-reduction reactions are best balanced by the half-reaction method?A.) covalent reactions *B.)acid-base
1. 5 answers
2. asked by Anonymous
3. 3,110 views
I need to find the mortgage loan amount and can't remember how to do it.The borrowers have a combined gross monthly income of
1. 0 answers
2. asked by tmouery
3. 479 views
A chemist dissolves 0.095 g of CuSO4 · 5H2Oin water and dilutes the solution to the mark in a 500-mL volumetric flask. A
1. 1 answer
2. asked by Neftali
3. 926 views
find the functions f and g so that f.g=H:H(x)=sqrt x^2+3
1. 2 answers
2. asked by Sade
3. 374 views
consider the functions f(x)=x^3-2 and g(x)=3 sqrt x+2:a. find f(g(x)) b. find g(f(x)) c. determine whether the functions f and g
1. 2 answers
2. asked by marie
3. 684 views
A class of 23 students was using square tiles to build rectangular shapes. Each student has more than one tile and each has a
1. 2 answers
2. asked by Enis
3. 534 views
the theoretical probability of winning the lottery is 1/1,000,000,000.which of the ff is true if you purchase a lottery
1. 1 answer
2. asked by francisca
3. 639 views
10-3(2x-5)=4x-6
1. 1 answer
2. asked by Georgiue
3. 254 views
Is 1/6 > or< 0.16, because the repeating decimal in 1/6 is what confuses me.
1. 1 answer
2. asked by Sandy
3. 461 views
1.What is the greatest common factor of 28 and 35?A.4 B.7 C.9 D.14 B? 2.Dina has a savings account with $276.38 in it. Her older
1. 3 answers
2. asked by Jerald
3. 810 views
a machine weighing 1500N is supported bt two chains attached to some point on the machine.one of these ropes goes to the eye
1. 1 answer
2. asked by wilson
3. 1,263 views
49x+21x+9/2=0write the discriminant of the following quadrctic and DETERMINE the nature of in each case.
1. 1 answer
2. asked by Silchang Mong
3. 422 views
7.Figure out the expression bellow(7+3)x2-5 A.8 B.15 C.22 D.30 B 8.When Henry went to the pet store he noticed that there were
1. 3 answers
2. asked by Jerald
3. 559 views
The ratio of boys to the total number of students is 2:5. If there are 123 girls, how many boys are there? I estimated 49.2, is
1. 1 answer
2. asked by Sandy
3. 508 views
Which equation describes the relationship between x and y in the table below?x y 5 20 7 28 9 36 11 44 A.y=x+15 B.y=x+8 C.y=3x+5
1. 4 answers
2. asked by Jerald
3. 648 views
a positive test charge of 3.0uC experiences a force of 0.75 N in an electric field. What is the magnitude of the electric field
1. 0 answers
2. asked by alex
3. 646 views
What molar ratio of acetic acid to sodium acetate is required to create a buffer solution having a pH of 4.83 at 25 Celsius? Ka
1. 1 answer
2. asked by Viv
3. 829 views
Identify and describe 3 environmental health hazards that cause ill health,accidents,crises and disasters within communities in
1. 2 answers
2. asked by Kananelo
3. 545 views
If sin A = 3/5 and cos B = 24/25 and <A and <B are both in quadrant 1, what is the exact value of cos (A-B) ? Help please
1. 2 answers
2. asked by Maryanne
3. 2,300 views
time day 0 day 1 day 3 day 4 day 5 day 7count blank 7 10 5 14 9 8 low 45&49 64&70 62&69 75&79 80&82 68&72 high 45&49 72&78
1. 0 answers
2. asked by nadye
3. 749 views
Devise a plan to carry out the following growth curve:Seed cells on day -1. Transfer cells to the test media on day 0. From day
1. 0 answers
2. asked by nayle
3. 388 views
Calculate amount (in grams) of unknown acid used for titration. You want 30 mL of titrant to get the equivalence point. Assume
1. 1 answer
2. asked by Justine
3. 2,093 views
F(x)= ln((3x+6)^4 (x^3 -2)^5 )F'(x)=
1. 1 answer
2. asked by Kevin
3. 258 views
I have to make a table with y on one side and x on the other.y=x. I have to provide integer values of x from -3 to 3. I don't
1. 1 answer
2. asked by Cherie
3. 342 views
I'm having a hard time choosing a teratogen (anything that causes harm to a fetus), especially since all the easy ones to find
1. 1 answer
2. asked by Jessica
3. 494 views
which unti would be best to measure the distance around a equator?inchs,feet,yards or miles
1. 1 answer
2. asked by kyia
3. 336 views
on the moon ,afalling object falls jest 2.65feet in the first second afther
1. 1 answer
2. asked by maya
3. 298 views
1) What is the equivalent of this?-5x(2x+7y)+7xy-4x(y+3)
1. 1 answer
2. asked by Isis
3. 355 views
10.7 div by 315.00=
1. 2 answers
2. asked by Anonymous
3. 329 views
Ms.SueYou helped me with a table but now I have to do one where y=-x using integers from -3 to 3. I am still unsure of how to do
1. 1 answer
2. asked by Cherie
3. 366 views
which expression below is equivalent to to 4/3x + 4 2/3?
1. 1 answer
2. asked by wynta
3. 340 views

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