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Questions Asked on May 2, 2010

What is the approximate pH of a solution labeled 6 x 10^-5 M HBr?
1. 5 answers
2. asked by jahil
3. 6,621 views
SO2 (5.00 g) and CO2 (5.00 g) were placed in a 750.0 mL container at 50.0 °C. The partial pressure of CO2 in the container was
1. 4 answers
2. asked by nick
3. 6,290 views
A railroad tunnel is shaped like semi-ellipse. The height of the tunnel at the center is 69 ft and the vertical clearance must
1. 1 answer
2. asked by Stacey grahaM
3. 5,939 views
Arrange the following compounds in order of decreasing ease of elution from a column of silica gel: a) 2-octanol; b)
1. 4 answers
2. asked by Johnny
3. 5,704 views
What is thhe pH of 500mL of solution containing 0.0124 grams of Ca(OH)2?
1. 2 answers
2. asked by jahil
3. 5,432 views
A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random,what is the probability of
1. 5 answers
2. asked by Bart
3. 5,148 views
what is the approximate pH of a solution labeled 0.050 M HClO? I realized my mistake on my last post but this isnt a strong acid
1. 3 answers
2. asked by jahil
3. 4,619 views
Insurance Plan: Mountville Health Plan; patient has met annual deductible of $250;80-20 coinsurance.Services: CPT codes: 99203
1. 5 answers
2. asked by Demetrius Oliver
3. 4,383 views
A bottle containing a standard solution of KMnO4 is found to have brown stains on the inside. Why will this KMnO4 be of no
1. 2 answers
2. asked by red
3. 3,189 views
a thimble is 32.0 cm from a spherical concave mirror. The focal point lenght of the mirror is 11.0 cm. What is the image
1. 1 answer
2. asked by Luis
3. 2,870 views
Emily and Clare kick a soccer ball at the same time. Emily kicks it with a force of 120 N at an angle of 60 degrees and Clare
1. 4 answers
2. asked by Bobby
3. 2,804 views
a rectangular table is two times long as it is wide if the area is 98ft^2 what is the width and length of the table
1. 2 answers
2. asked by marry
3. 2,772 views
The forces holding together an ionic solid are much stronger than the forces between particles in a molecular solid. How are
1. 3 answers
2. asked by Jake
3. 2,656 views
By what factor will the rms speed of gas molecules increase if the temperature is increased from 0 degrees C to 100 degrees C?
1. 1 answer
2. asked by Anonymous
3. 2,584 views
An aqueous solution of Na2SO4 has a molal concentration of 0.293 mol kg-1. Its density is 1.0350 g mL-1.Calculate the molar
1. 10 answers
2. asked by write2khin
3. 2,398 views
A cruise ship's captain sets the ship's velocity to be 26 knots at a heading of 080 degrees. The current is flowing toward a
1. 1 answer
2. asked by Bobby
3. 2,337 views
1. what happens to a narrow light beam that enters parallel to the principal axis on a spherical concave mirror?2. what happens
1. 1 answer
2. asked by Karen
3. 2,267 views
write a equivalent fraction of 3/9 and multiply or divide the numerator or denominator by the same number
1. 2 answers
2. asked by Elijah
3. 1,881 views
Discuss the types of intermolecular forces acting in the liquid state of each of the following substances. (Select all that
1. 5 answers
2. asked by Jake
3. 1,782 views
Calculate the freezing- and boiling-point changes for a solution containing 12.0 g of naphthalene (C10H8) in 50.0 g of benzene.
1. 1 answer
2. asked by Mariah
3. 1,733 views
A train moving with a speed of 31.8 m/s sounds a 136-Hz horn. Suppose a stationary observer sounds a horn that is identical to
1. 1 answer
2. asked by cassie
3. 1,634 views
A small aircraft, on a heading of 225 degrees, is cruising at 150 km/h. It is encountering a wind blowing from a bearing of 315
1. 2 answers
2. asked by A
3. 1,574 views
point a is located 0.25 m away from a charge of -2.1 x 10 -9 C. point b is located 0.50 m away from the charge. what is the
1. 2 answers
2. asked by kim
3. 1,561 views
A force of 200 N is resolved into two vector components of 150 N and 80 N. Are these rectangular vector components? Justify your
1. 1 answer
2. asked by Ariza
3. 1,506 views
An airplane is flying at 550 km/h on a heading of 080 degrees: The wind is blowing at 60 km/h from a bearing of 120 degrees.Find
1. 1 answer
2. asked by Ariza
3. 1,496 views
Two oxides of lead were separately reduced to metallic lead by heating in a current of hydrogen and the following data obtained
1. 4 answers
2. asked by Akashdeep
3. 1,369 views
Start by observing the living species around you. Ever wonder why a pollinator is attracted to a particular flower, or what
1. 1 answer
2. asked by Lisa
3. 1,320 views
the table below shows the values of the resistance, capcitive reactance and inductive reactance for five RCL circuits. in which
1. 1 answer
2. asked by seema
3. 1,312 views
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reactionHow many grams of
1. 2 answers
2. asked by safwan hakim
3. 1,285 views
an electron and a proton are initially very far apart (effectively an infinite distance apart.) they are then brought together
1. 1 answer
2. asked by lara
3. 1,251 views
Granite comprising Stone Mountain crystallized from magma tens of kilometers within the Earth, but uplift and erosion has since
1. 3 answers
2. asked by Amanda
3. 1,228 views
Two questions actually. Please only respond with step-by-step answers. Feel free to change the numbers, I just need to know how
1. 1 answer
2. asked by Jenny
3. 1,220 views
how many drops of 0.5M NaOH are needed to neutralize 10 drops of 1.0M HCl? What would be the pH of the neutral solution?
1. 2 answers
2. asked by kristy
3. 1,183 views
A student investigating the properties of solutions containing carbonate ions prepared a solution containing 7.493 g Na2CO3 in a
1. 1 answer
2. asked by chemistrry help!
3. 1,178 views
A cubic box of volume 4.1×10^-2 m^3 is filled with air at atmospheric pressure at 20 degrees C. The box is closed and heated to
1. 1 answer
2. asked by Anonymous
3. 1,170 views
we have a speech do and we have to make an outline, so i did. my speech is on music so one of my ?'s on my outline is how many
1. 0 answers
2. asked by Morgan
3. 1,155 views
If you place a metal ring in a region in which a magnetic field is rapidly alternating, the ring may become hot your touch, why?
1. 1 answer
2. asked by simon
3. 1,119 views
How can you mathematically prove that two lines are perpendicular?
1. 1 answer
2. asked by Anonymous
3. 1,100 views
Write an equivalent fraction for 3/9 and multiply or divide the numerator and the denominator by the same number
1. 0 answers
2. asked by Elijah
3. 1,096 views
A cubic box of volume 4.1×10^-2 m^3 is filled with air at atmospheric pressure at 20 degrees C. The box is closed and heated to
1. 1 answer
2. asked by Anonymous
3. 1,096 views
Suppose there are two goods. The demand for good 1 is q1=a-bp1+ep2 and the demand for good two is q2=a-bp2+ep1.a and b are
1. 1 answer
2. asked by Emma
3. 1,095 views
Jones Company had 100 units in beginning inventory at a total cost of $10,000.The companypurchased 200 units at a total cost of
1. 0 answers
2. asked by Angie
3. 1,090 views
Determine whether f is continuous at x=c in the function. Use the 3 conditions of continuity to justify your answer.f(x) =
1. 1 answer
2. asked by Abbey(Please help)
3. 1,081 views
Unpolarized light with an average intensity of 750.0W.m^2 enters a polarizer with a vertical trasmission axis. the transmitted
1. 1 answer
2. asked by seema
3. 1,051 views
A patient rolling up a sleeve to have a blood sample taken is an example of what?
1. 1 answer
2. asked by Shun
3. 1,043 views
If you dissolve 30.0 g of HF in 100mL of water, what is the concentration of H+ ions in this solution? (Can you figure out what
1. 1 answer
2. asked by Lucy
3. 990 views
Hi all.I have a question about creating graphs and other data tables using Excel spreadsheets et al. It's actually for a
1. 0 answers
2. asked by John
3. 979 views
How are mm Hg, torr, psi, atm, and Pa related to each other mathematically?
1. 1 answer
2. asked by Ariana
3. 977 views
You are to imagine that you are part of a select marketing group. This group is to consider the Colorado City Convention and
1. 0 answers
2. asked by Jennifer
3. 953 views
A tire is filled with air at 17 degreees C to a gauge pressure of 220 kPa. If the tire reaches a temperature of 39 degrees C,
1. 1 answer
2. asked by Anonymous
3. 949 views
The way a company accounts for human resources is an example of which of the following financial statement limitations?
1. 1 answer
2. asked by Diedra
3. 943 views
72. Solve for the variable in the equation:4.9x + 4.4 = 19.1 x=3? 71. Does a machine that takes one quarter at a time into its
1. 1 answer
2. asked by y912f
3. 916 views
what would the speed of an observer be if a red(4.688x10^14Hz) traffic light appeared green(5.555x10^14Hz) to the observer?
1. 1 answer
2. asked by seema
3. 899 views
2. The new Twinkle bulb has a standard deviation hours. A random sample of 77 light bulbs is selected from inventory. The sample
1. 2 answers
2. asked by stefanie
3. 889 views
In the chemical plating experiment zinc powder is dissolved in a hot NaOH solution to formsodium zincate according to the
1. 1 answer
2. asked by chem help
3. 880 views
Staley Watch Company reported the following income statement data for a 2-year period.2008 2009 Sales $210,000 $250,000 Cost of
1. 0 answers
2. asked by Angie
3. 809 views
Answer the following questions to determine why Euler’sformula continues to hold for the polyhedron formed by cutting corners
1. 1 answer
2. asked by KiKi
3. 797 views
I am not sure how to do this, just guesssing.A couple has a 2/3 probability of passing on brown eyes to their children. If they
1. 2 answers
2. asked by bwb
3. 797 views
Oxygen gas can be generated by heating KClO3 in the presence of a catalyst.KClO3 ----> KCl + O2 (unbalanced) What volume (in L)
1. 1 answer
2. asked by write2khin
3. 796 views
NH3(g) + O2(g) NO2(g) + H2O(g)Consider the above unbalanced equation. What volume of NH3 at 950. mm Hg and 33.5°C is needed to
1. 1 answer
2. asked by Megan
3. 783 views
the tangent line to the graph of y=sin x at the point (2pi/3, (radical 3)/2) crosses the sine graph at the point where x=?
1. 2 answers
2. asked by Lauren
3. 777 views
can any one explain how to evaluate this improper integral i.e. the function is not continuous at 0 neither at infintegration of
1. 1 answer
2. asked by William
3. 768 views
The rectangular coordinates of a point are given. Find two sets of polar coordinates for the point.(-3,-3)
1. 1 answer
2. asked by Abbey(Please help)
3. 756 views
To My ValentineMore than a catbird hates a cat, Or a criminal hates a clue, Or the Axis hates the United States, That's how much
1. 3 answers
2. asked by Sara
3. 744 views
Write a 350- to 700-word response that familiarizes you with private payer plans and CDHP account types
1. 0 answers
2. asked by Tiff
3. 741 views
Answer the following question about copper (II) sulfate pentahydrate:a)how much water (in g) is there in 10.0 g of the compound
1. 1 answer
2. asked by Jack
3. 724 views
Determine the resultant of the vector sum:10 N at 045 degrees and then 8N at 068 degrees.
1. 0 answers
2. asked by Ariza
3. 721 views
NH3 + H20 <---> NH4+ + OH-this is aqueous solution. In 0.0180 M nH3, THE [OH-] is 5.60 X 10^-4 M. it is assumed that the volumes
1. 1 answer
2. asked by rav
3. 718 views
SraJMcGin, you are one good english tutor I see here right now, can you please help me with some of my English posts. Please.
1. 9 answers
2. asked by Sara
3. 704 views
I wonder if you could check the following questions and help me rephrase a few more sentences I’m not sure of.Thanks a lot in
1. 1 answer
2. asked by Franco
3. 700 views
How did the geography help the romans prosper?
1. 2 answers
2. asked by Jessica
3. 697 views
Suppose you would like to cross a 204 ft wide river in a boat. Assume that the boat can travel 37 mph relative to the water and
1. 1 answer
2. asked by Stacey grahaM
3. 696 views
A car is traveling at 15 m/sec. Ten minutes later it is traveling at 70 m/sec. What is the acceleration?
1. 1 answer
2. asked by Jordan
3. 691 views
Divide and Simplify:y^2-25/7 divided by 7y+35/49
1. 0 answers
2. asked by Lauren
3. 689 views
Alex must wrap two boxes. Both boxes are right rectangular prisms. The smaller box has a length of 12 inches. The larger box is
1. 0 answers
2. asked by Hannah
3. 685 views
How much 0.10 M NaOH (in mL) is required to neutralize 8.00 mL of the 0.10 M HC2H3O2?
1. 1 answer
2. asked by John
3. 683 views
Question 1 5 points SaveWhich of the following fields uses Chicago Manual of Style (CM) documentation? psychology history
1. 0 answers
2. asked by christopher
3. 678 views
"Calculate the pH of 0.10 mol/L aqueous solution of aluminum sulfate."I am also given the ka value for the aluminum ion
1. 9 answers
2. asked by Stuck
3. 672 views
pleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasw helpcan you pleaaaaase help me find the area between y=cos(4x) and y=1-cos(4x)
1. 0 answers
2. asked by aymal
3. 661 views
Two cars, one traveling north and one traveling west, collide at an intersection.The resulting momentum of the two cars together
1. 1 answer
2. asked by Abi
3. 643 views
How many moles of electrons are required to produce 23.8 g Cu from a CuSO4 solution?
1. 1 answer
2. asked by Angel
3. 642 views
BECAUSE OF THE ASSUMPTION THAT THE POPULATION VARIANCES ARE EQUAL, WHEN YOU DO A ANALYSIS OF VARIANCE.
1. 1 answer
2. asked by WAYMOND
3. 629 views
find the slope and y-intercept of y=3.7x-2
1. 2 answers
2. asked by Anonymous
3. 627 views
Consider a bowl containing 36 different slips of paper. Ten of the slips of paper each contain one of 16)the digits from the set
1. 1 answer
2. asked by Bart
3. 625 views
An unknown compound analyzes to be 42.85% C, 7.20% H, and 49.95% N. A 0.915 g sample of the gas occupies 250. mL at 760. mm Hg
1. 1 answer
2. asked by Megan
3. 624 views
In the formula for the volume of a pyramid, the height h is the distance measured along one face of the pyramid to the base.Is
1. 2 answers
2. asked by heather
3. 619 views
1) What does a high Boltzmann Distribution value indicate? (please explain I already read wikepedia articles)2) For fluoroacetic
1. 0 answers
2. asked by anonymous
3. 619 views
Resolve a 500-N force into two rectangular vector components such that the ratio of their magnitudes is 2:1. Calculate the angle
1. 0 answers
2. asked by Kayla
3. 618 views
In each of the following, determine how much solute (in g or mL) must be added to the correct quantity of water to make the
1. 1 answer
2. asked by Kim
3. 610 views
"Calculate the pH of NaCl".I know that NaCl is neutral...but I don't know how to show that it is neutral. The ka value for the
1. 3 answers
2. asked by Stuck
3. 606 views
1. You recorded maximum electrostatic potential values for the ANTI and SYN conformers.What is this value a measure of? How does
1. 0 answers
2. asked by anonymous
3. 604 views
what is the solution of the following linear system?2y + 6x = -24 y - 13x = -12 a) (0,-12) b) none c) (0,3) d) infinite number
1. 1 answer
2. asked by poo
3. 602 views
what is the solution for this problem,create three sets, set A, B, and set C by going through the items in your wallet or purse.
1. 0 answers
2. asked by Terrie
3. 594 views
Why is carbon dioxide gas that carbonates fountain drinks stored in sturdy canisters?
1. 1 answer
2. asked by Ariana
3. 593 views
I forgot to include a few more sentences I would like you to check, too.1) Pamela is embarassed at his giving her presents
1. 1 answer
2. asked by Franco
3. 591 views
in many cars the passanger-side-rear-view mirror has a warning that reads "objects may be closer than they appear" is the mirror
1. 0 answers
2. asked by Karen
3. 590 views
The area of a playground is 221 yd2. The width of the playground is 4 yd longer than its length. Find the length and width of
1. 1 answer
2. asked by Anonymous
3. 585 views
At body temperature the latent heat of vaporization of water is Lv = 2.26 ¡Ñ 103 kJ kg−1.(a) A naked person with a surface
1. 1 answer
2. asked by kelly
3. 585 views
I was just wondering if anyone can help me I am having a hard time with the assignment. Like I want to know what is APA format.
1. 0 answers
2. asked by kasey
3. 584 views
1. We decided to go abroad.2. We made up our mind to go abroad. 3. We made a decision to go abroad. 4. We made up our minds to
1. 1 answer
2. asked by rfvv
3. 578 views

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