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Questions Asked on November 10, 2010

A 100.0 ml sample of 0.300 M NaOH is mixed with a 100.0 ml sample of 0.300 M HNO3 in a coffee cup calorimeter. Both solutions
1. 2 answers
2. asked by Kristy
3. 5,897 views
What is the net ionic equation for the reaction of formic acid, HCOOH, with NH3?A. H+(aq) + NH3(aq) → NH4+(aq) B. H+(aq) +
1. 2 answers
2. asked by Jake
3. 5,012 views
A 6.5 ft tall car standing next to an adult elephant casts a 33.2 ft shadow. If the adult elephant cast a 33.2 ft shadow that is
1. 10 answers
2. asked by lilly
3. 4,626 views
a pronghorn antelope can travel 105 miles in three hours.if it continuedntraveling at the same speed,how far could a
1. 9 answers
2. asked by Anonymous
3. 4,055 views
A buffer solution contains 0.120M acetic acid and 0.150M sodium acetate.a. How many moles of acetic acid and sodium acetate are
1. 2 answers
2. asked by Elizabeth
3. 3,540 views
the value for the Ksp of silver chromate is reported to be 1.1 x 10^-12. in a saturated solution of silver chromate, the silver
1. 2 answers
2. asked by Rachel
3. 3,393 views
Calculate the force exerted on a rocket, given that the propelling gases are expelled at a rate of 1800 kg/s with a speed of
1. 1 answer
2. asked by Linda
3. 3,261 views
A 500 g steel blockrotates on a steel table while attached to a 2.0-m-long massless rod. Compressed air fed through the rod is
1. 2 answers
2. asked by Kathleen
3. 3,236 views
How many moles of O are in 13.0 mol Fe(NO3)3?can you please find this using dymensional analysis and show me how you worked it?
1. 1 answer
2. asked by sara
3. 3,229 views
Terms of sequences15,22,31,42,55 find next 3 terms and the formula also for the sequence
1. 3 answers
2. asked by sara
3. 3,214 views
What mass of benzene(C6H6, molar mass=78.11g/mol) is required to produce 1500 kJ of heat according to the following reaction?2C6
1. 3 answers
2. asked by Nikky
3. 2,966 views
A student (m = 68 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a
1. 2 answers
2. asked by sean
3. 2,940 views
“1.25 g of crushed limestone was added to 50.0 cm3 of 1.00 mol dm-3 hydrochloric acid (an excess). The mixture was left until
1. 2 answers
2. asked by Sophia
3. 2,851 views
What mass of H2O is required to form 1.2 L of O2 at a temperature of 310 K and a pressure of 0.950 atm?2H2O (l) ---> 2H (g) + O2
1. 1 answer
2. asked by Lisa
3. 2,743 views
Eight books, each 4.1 cm thick with mass 1.8 kg, lie flat on a table. How much work is required to stack them one on top of
1. 3 answers
2. asked by Linda
3. 2,667 views
What is the molarity of a potassium hydroxide solution if 38.65 mL of the KOH solution is required to titrate 25.84 mL of 0.1982
1. 2 answers
2. asked by Anonymous
3. 2,650 views
In a buffer solution, if [Aƒ{] < [HA], which of the following must be true?a. pH < pKa b. pH = pKa c. pH > pKa d. pH < 7.00 e.
1. 3 answers
2. asked by miller
3. 2,642 views
Calculate the new molarity if each of the following dilutions is made. Assume the volumes are additive.(a) 52.3 mL of water is
1. 1 answer
2. asked by Jasmin
3. 2,487 views
The length of a rectangle is increasing at a rate of 9 cm/s and its width is increasing at a rate of 7 cm/s. When the length is
1. 1 answer
2. asked by JJ
3. 2,358 views
If the pH of grapefruit is 3 and the pH of beer is 5, how many times more acidic is the grapefruit juice than the beer?
1. 1 answer
2. asked by Ash
3. 1,984 views
a 0.1 kg mass is suspended at rest from a spring near the Earth's surface, the distance that the spring is stretched is measured
1. 1 answer
2. asked by PHYSICIS HELP ASAP
3. 1,936 views
A child swings a yo-yo of weight mg in a horizontal circle so that the cord makes an angle of 30 degrees with the vertical. Find
1. 2 answers
2. asked by Brianna
3. 1,934 views
The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian
1. 3 answers
2. asked by Lexi
3. 1,874 views
For each reaction, complete and balance the equation and give the net ionic equation.a) KOH(aq)+ZnCl2(aq)-> KCl2+ZnOH The second
1. 1 answer
2. asked by Jess
3. 1,867 views
Determine the chloride ion concentration in a solution containing 50.0 g MgCl2 dissolved in 1500 mL of solution.a. 0.350 M b.
1. 2 answers
2. asked by princess
3. 1,764 views
How many atoms of carbon are found in 5.94 grams of acetic acid?
1. 1 answer
2. asked by Tom
3. 1,755 views
The velocity of a car is f(t)=7t meters/second. Use a graph of f(t) to find the exact distance traveled by the car, in meters,
1. 3 answers
2. asked by REALLY NEED HELP!!!!
3. 1,752 views
How many possible values for pair l and m_{l} are there when n_1 = 3?How many possible values for pair l and m_{l} are there
1. 1 answer
2. asked by Bobby
3. 1,718 views
How do I predict whether the equilibrium lies to the right or left of an Acid-base equation?O[2-](aq) + H2O(l) <--> OH[-] +
1. 1 answer
2. asked by Ana
3. 1,715 views
The two isotopes of uranium, 238U and 235U, can be separated by effusion of the corresponding UF6 gases. What is the ratio (in
1. 4 answers
2. asked by Jess
3. 1,688 views
Differentiate the function.f(x) = sin(5 ln x)
1. 2 answers
2. asked by Michael
3. 1,636 views
Differentiate the function.f(x) = sin(7 ln x)
1. 1 answer
2. asked by JJ
3. 1,626 views
In the triangle ABC, angle ABC is x, angle BCA is x+40, and angle CAB is 2x. What is the measure of the largest angle (in
1. 1 answer
2. asked by sadf
3. 1,606 views
The ratio of the perimeter of triangle KLM to the perimeter of triangle PQR is 5/3 and LM is 4 less than twice QR. Find LM and
1. 1 answer
2. asked by Kevin Loed
3. 1,602 views
herman company received proceeds of $188,500 on 10-year, 8% bonds issued on january 1, 2009. the bonds had a face value of
1. 1 answer
2. asked by debbie
3. 1,593 views
A map has a scale of 3 cm : 18 km. If Riversaid and Smithville are 54 km apart, then they are how far apart on the map?how would
1. 3 answers
2. asked by lilly
3. 1,578 views
please help!You are given an unknown, colorless, solution that may contain only one salt from the following set: NaA, NaB, NaC.
1. 1 answer
2. asked by Marcus
3. 1,533 views
A ski gondola is connected to the top of a hill by a steel cable of length 620 m and diameter 1.5 cm. As the gondola comes to
1. 2 answers
2. asked by Tim
3. 1,522 views
Predict the signs of delta H (Enthalpy) and delta S (Entropy) for the evaporation of water at 85 C.
1. 2 answers
2. asked by James
3. 1,501 views
kyle had 36 books in hislocker. some were library books, some were textbooks, and the rest were telophone books. the number of
1. 2 answers
2. asked by Katherine
3. 1,485 views
The estimated lattice energy for is CsF2+2347kj/mol. Use the data given to calculate an overall energy change (in kilojoules per
1. 2 answers
2. asked by diane
3. 1,434 views
Two children seat themselves on a seesaw, the one on the left has a weight of 400N whlie the one on the right weighs 300N. The
1. 0 answers
2. asked by James
3. 1,415 views
which of the folllowing species is not isoelctric with any of the others?a)V3+ b)Ca2+ c)Ar d)CL- e)S2-
1. 4 answers
2. asked by lavonne
3. 1,415 views
Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. The frequency of the waves
1. 1 answer
2. asked by sarah
3. 1,401 views
Discuss the dramatic irony in Twelfth Night. Provide at least two examples in your essay?i don't have an answer yet, i was
1. 2 answers
2. asked by whit
3. 1,365 views
A 23 g bullet traveling 220 m/s penetrates a 4.2 kg block of wood and emerges cleanly at 140 m/s.If the block is stationary on a
1. 3 answers
2. asked by Linda
3. 1,355 views
How many atoms of aluminum can be produced by the decomposition of 47.1 g of Al2O3? (Hint: Write and balance the equation
1. 2 answers
2. asked by Tim
3. 1,340 views
The perimeter of a rectangle is 96m.The length is 6m more than twice the width. Find the dimension.
1. 2 answers
2. asked by Kayla
3. 1,324 views
What total volume (in lhter at 600 C and 1atm.) could be formed by the decomposition of 16g of NH4NO3 ?
1. 2 answers
2. asked by Ajay Gope
3. 1,294 views
Ralph Waldo Emerson's poem "Success” is an apt description of being successful because each line in the poem reflects
1. 3 answers
2. asked by Angelina
3. 1,247 views
1. what was the incan capital called?2. what was the Incan emperor called? 3. who built the cahokia city?
1. 2 answers
2. asked by 7th grade
3. 1,212 views
an arrow is fired horizontally at a target 30 meters away. The bullseye is at the same level as the bow. The initial speed of
1. 1 answer
2. asked by Lola
3. 1,212 views
An aqueous solution of phosphoric acid, H3PO4, contains 285 g H3PO4 in 400 mL solution, and has a density of 1.35 g/mL.
1. 2 answers
2. asked by princess
3. 1,185 views
1.) two marbles are drawn without replacement from a bowl containing seven red, four blue, and nine yellow marbles. what is the
1. 1 answer
2. asked by J
3. 1,176 views
Can someone please proofread my essay on snitching and help fix any grammar error to make it flow better. Did I correctly use
1. 1 answer
2. asked by Keisha
3. 1,119 views
matt thinks that all the values of x and y that absolute value | | would make this statment true|x+y|= |x|+|y| if x is -5 and y
1. 4 answers
2. asked by kayla
3. 1,116 views
Hey guys can someone help me with calculating masses of reactants and products ..... And also calculating limiting and excess
1. 0 answers
2. asked by Saria
3. 1,115 views
The poison strychnine is a weakly basic compound with Kb = 1.8 „e 10ƒ{6. What is the pH of a 0.058 M solution of strychnine?a
1. 1 answer
2. asked by miller
3. 1,113 views
a 0.1 kg mass is suspended at rest from a spring near the Earth's surface, the distance that the spring is stretched is measured
1. 0 answers
2. asked by derek
3. 1,112 views
between hobbes and locke whose philosophy would creon follow ? antigone?
1. 0 answers
2. asked by Janet
3. 1,093 views
A person has a mass of 50.0 kg. What is the pressure they exert on the blades of their ice skates if each skate blade is 15.0 cm
1. 0 answers
2. asked by Marcy
3. 1,056 views
I DO NOT understand the following! Please HELP :)1st Part Substances A, B, and C can all act as oxidizing agents. In solution, A
1. 1 answer
2. asked by Lisa
3. 1,037 views
A 0.145 kg baseball pitched at 37.5 m/s is hit on a horizontal line drive straight back toward the pitcher at 48.0 m/s.If the
1. 1 answer
2. asked by Linda
3. 1,036 views
a sample of 150 adults is composed of 100 women and 50 men. estimate the standard error of the proportion for the female
1. 1 answer
2. asked by suzanne
3. 1,030 views
so i posted this question yesturday and got some help. which is the stuff below. can you look at the last thing i said which was
1. 7 answers
2. asked by hannah
3. 1,022 views
What is the pH of the solution obtained when 125 mL of 0.614M NaOH is diluted to 16.0 L with water?
1. 1 answer
2. asked by Jenna
3. 1,008 views
In a very simple model of the lower atmosphere, air has a constant density of 1.22 kg/m3. How much would the air pressure change
1. 1 answer
2. asked by Maree
3. 990 views
51. -"¿Puedes jugar fútbol?"-"_______." a. Sí, quires b. Sí, puedes c. No, no puedo d. No, no necesito jugar C? 52. -"¿Te
1. 2 answers
2. asked by mysterychicken
3. 984 views
2.0 kg particle-like object moves in a plane with velocity components vx = 30 m/s and vy = 35 m/s as it passes through the point
1. 1 answer
2. asked by Xavier Hernandez
3. 979 views
Ralph Waldo Emerson's poem "Success” is an apt description of being successful; each line expresses its own special meaning.
1. 6 answers
2. asked by Angelina
3. 972 views
Where juliet says: "O romeo, romeo!Wherefore art thou Romeo?Deny thy father and refuse thy name; Or if thou wilt not,be sworn my
1. 3 answers
2. asked by Angel
3. 956 views
What is the probability that a 8-digit phone number contains at least one 5? (Repetition of numbers and lead zero are allowed).
1. 0 answers
2. asked by cmb
3. 952 views
Boat A leaves the dock at 12pm heading due South at a constant speed of 20 km/h.Meanwhile, at 12pm Boat B, a pirate ship, is 15
1. 1 answer
2. asked by Anya
3. 941 views
You have isosceles triangle WXY and segment WZ is the perpendicular bisector of segment XY. You have to prove triangle WXY
1. 0 answers
2. asked by Michele
3. 938 views
1. Free-fall: A ball is thrown vertically upward. What are its velocity and acceleration when it reaches its maximum altitude?
1. 2 answers
2. asked by Aaron
3. 933 views
Find the vertical asymptotes of the following function:f(x)={x-3}/{(x-3)(x^2-4)}. The equation(s) of the vertical asymptote(s)
1. 5 answers
2. asked by Jessica
3. 926 views
Set up and Label the proportionAnswer and round your answer to the nearest whole number. A 6 ft tall tent standing next to a
1. 2 answers
2. asked by Kylie
3. 925 views
Which would be more effective in lowering the freezing point of 500 g of water? 100 g of sucrose or 100 g of ethyl alcohol?
1. 1 answer
2. asked by Sarah
3. 919 views
An underground tank full of water has the following shape:Hemisphere - 5 m radius. at the bottom Cylinder - radius 5 m and
1. 6 answers
2. asked by Amy
3. 917 views
1.) a computer package sale comes with two different choices of printers and four different choices of monitors. if a store
1. 2 answers
2. asked by Kay
3. 916 views
What literary tradition immediately preceded the novel tradition?short story? romance? fable? i think its a fable?
1. 0 answers
2. asked by danny
3. 915 views
Did anybody read life of pi if yes can someone tell me what happen in part one .... I read it but is alittle confused with pi
1. 0 answers
2. asked by Tabi
3. 912 views
The ratio of the number of mints in Jar A to that in Jar B was 8 : 5. After 1/4 of the mints in Jar A were sold, there were 120
1. 0 answers
2. asked by crystal
3. 902 views
You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into
1. 4 answers
2. asked by Linda
3. 900 views
how often does a leap year occur?what are al the prime numbers less then 12. what is the eighth multiple of 32? is the last
1. 2 answers
2. asked by jojo
3. 898 views
A 23.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 79.0 N
1. 1 answer
2. asked by Anonymous
3. 889 views
Mikes car needs a new muffler and new brakes. (Which word needs an aposterphy?)
1. 1 answer
2. asked by ricky
3. 883 views
YOU PUSH A REFRIGERATOR WIT HA FORCE OF 50N AND IT MOVES 3 METERS ACROSS THE FLOOR
1. 1 answer
2. asked by MARIAH
3. 880 views
An underground tank full of water has the following shape:Hemisphere - 5 m radius. at the bottom Cylinder - radius 5 m and
1. 2 answers
2. asked by Amy
3. 877 views
hi everyone... i have this homework.. i tried to solve it... can anyone check if it's right or not, please??Question: The
1. 2 answers
2. asked by lubna
3. 865 views
MUST BE ORIGINAL, INCLUDED PROPER APA FORMAT, REFERENCE PAGE, PROPER IN TEXT CITATIONS, AND MEET ALL GUIDELINES LISTED BELOW,
1. 3 answers
2. asked by Happyy4uu
3. 852 views
43. Sí, _____ semestre es fácil.a. el primero b. el primer c. la primera d. la una A? 47. ____ enseña cinco clases. a. El
1. 1 answer
2. asked by mysterychicken
3. 844 views
Ann is five years older than twice her brother Dan's age, a. Write an algebraic expression to represent the sum of their ages.
1. 2 answers
2. asked by april
3. 838 views
what does the statment"the properties of salt are diffrent from the properts of the elements that go into making them"mean? i
1. 0 answers
2. asked by marisa
3. 834 views
A 66 kg diver steps off a 13 m tower and drops, from rest, straight down into the water. If he comes to rest 4.4 m beneath the
1. 1 answer
2. asked by kaitlyn
3. 825 views
Words to use:Accelerate - Sliding - Brake - Friction - Slipping - Inertia Velocity - Wheel - Strength - Static - Terminal
1. 1 answer
2. asked by Jacob
3. 808 views
A cart loaded with bricks has a total massof 28.5 kg and is pulled at constant speed by a rope. The rope is inclined at 28.1 ◦
1. 0 answers
2. asked by Shakib
3. 804 views
A laboratory assistant needs to prepare 325 mL of 0.110 M CaCl2 solution. How many grams of calcium chloride will she need?
1. 1 answer
2. asked by Jasmin
3. 791 views
Ethos Writing Assignment:Imagine that you need to convince your audience that you have ethos in order to construct your
1. 6 answers
2. asked by y912f
3. 789 views
THANK YOU lol thank you very much i now understand wat shes sayin myteacher don't really get it either lol wen i asked him in
1. 4 answers
2. asked by Angel
3. 788 views

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