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Questions Asked on May 31, 2011

Balance the equation in aqueous basic solution:NO2-(aq) + Al(s) → NH3(aq) + AlO2-(aq) I know how to balance equations in
1. 2 answers
2. asked by Jessie
3. 6,016 views
IF 80mg of a radioactive element decays to 10mg in 30 minutes, the half-life of this element isa.10 min b.20 min c.30 min d.40
1. 4 answers
2. asked by Jazmin
3. 5,973 views
Phosphoric acid reacts with magnesium hydroxide to produce magnesium phosphate and water via the following reaction:H3PO4 +
1. 2 answers
2. asked by Christy
3. 5,602 views
If cos(t)=(-7/8) where pi<t<(3pi/2), find the values of the following trig functions.cos(2t)=? sin(2t)=? cos(t/2)=? sin(t/2)=?
1. 1 answer
2. asked by Char
3. 3,370 views
the wealth that enabled the Italian city-states to lead in the development of Renaissance arts was derived mainly from?a)the
1. 13 answers
2. asked by Erica
3. 3,362 views
You carefully weigh out 17.00g of CaCo3 powder and add it to 68.85g of HCl solution. You notice bubbles as a reaction takes
1. 4 answers
2. asked by Christy
3. 2,878 views
24. Which pair of triangles, if any, can be proven congruent by the ASA Postulate?25. Which of the following can you use to
1. 1 answer
2. asked by Anonymous
3. 2,437 views
The volume of a sample of oxygen is 300.0mL when the pressure is 1.00 atm and the temperature is 27.0 degrees C. At what
1. 1 answer
2. asked by Kaitlin
3. 2,245 views
A rectangular lawn measuring 8m by 4m is surrounded by a flower bed of uniform width. The combined area of the lawn and the
1. 1 answer
2. asked by Rebecca
3. 1,991 views
4. What source of economic growth is reflected in the economy by an increase in productivity without an increase in land, labor,
1. 1 answer
2. asked by Codey
3. 1,944 views
How will the equilibrium: Heat energy + CH4 + 2H2S = CS2 + 4H2 be affected by the following?a) A decrease in temperature? b) The
1. 1 answer
2. asked by Lina
3. 1,914 views
Use the pythagorean Theorem to find the missing side length when a=12 and c=13
1. 2 answers
2. asked by danielle
3. 1,832 views
Solve using the quadratic formula.a) x^2 - 7x + 12 = 0 a = 1 b = -7 x = -b +/- the sr of b^2 - 4ac /2a 7 +/- the sr of -7^2 -
1. 1 answer
2. asked by Rebecca
3. 1,671 views
total of aniket marks in maths and science together are 100 more than his marks in english.his average markes in tha three
1. 3 answers
2. asked by shweta
3. 1,670 views
How can I prove this identity?(1 + sinØ + cosØ):(1 - sinØ + cosØ) = (1 + sinØ) : cosØ
1. 1 answer
2. asked by Lucia
3. 1,492 views
A 0.400 gram sample of white powder contains 0.141 of potassium, 0.115 grams of sulfur, and 0.144 grams of oxygen. what is the
1. 3 answers
2. asked by Kyle
3. 1,466 views
Given the following data at 298K, calculate delta S for :2Ag2O(s) -> 4Ag(s) +O2(g) deltaS(J/mol.K)121.3 42.6 205.2
1. 1 answer
2. asked by Amy
3. 1,352 views
9. During the 1990's the inflation and unemployment trends in the United States changed. What was unusual in the 1990s?A.
1. 1 answer
2. asked by Codey
3. 1,328 views
Concern about international crisis has caused consumers to save their money and postpone big purchases. What is the effect on
1. 0 answers
2. asked by Codey
3. 1,298 views
In column F (cell ranges F5:F16), use an appropriate formulato calculate the percentage of the grand total for each type of
1. 8 answers
2. asked by kayla
3. 1,275 views
Lighting hit a tree three-eighths of the distance up the trunk from the ground and broke the tree so that its top landed 40 feet
1. 1 answer
2. asked by Katherine
3. 1,207 views
Given the equilibrium: CO + 2H2 = CH3OHH=-18.0kJ How will the concentration of CO at equilibrium be affected by the following?
1. 1 answer
2. asked by Amber
3. 1,207 views
22. An economy that experiences decreasing real GDP and increasing prices is said to suffer from?A. recession B. depression C. a
1. 1 answer
2. asked by Codey
3. 1,172 views
A boy hits a football high up in the air . He runs and catches the football before it hits the ground. Which of the two , the
1. 1 answer
2. asked by rahul
3. 1,171 views
if a test has a mean of 75, with a standard deviation of 11, what % of students scored an A (90 or higher)?
1. 0 answers
2. asked by cathy
3. 1,168 views
The main purpose of a peer review committee is toA. collect and prepare information to be submitted to the NPDB. B. establish
1. 0 answers
2. asked by jim
3. 1,160 views
equation x+3y+2z=6(6,2,3) how would you sketch the plane on a set of axes? is it supposed to look like a triangle? becuse my
1. 1 answer
2. asked by jessica
3. 1,136 views
A cable 40 feet long is cut into three pieces so the length of the second piece is 4 times the length of the first piece, and
1. 2 answers
2. asked by elaine
3. 1,136 views
The length of a rectangle is 2cm more than the width. The area is 24cm^2. What are the dimensions of the rectangle?Let x be the
1. 2 answers
2. asked by Rebecca
3. 1,119 views
Evaluate the definite integral from [0,4] 4x^2 dx, by using its definition as a limit of approximating sums.First, I solve
1. 3 answers
2. asked by Sean
3. 1,118 views
Four numbers are drawn from random tiles numbereed 0 through 9. What are the odds of drawing numbers 1 through four in any
1. 1 answer
2. asked by Katelyn
3. 1,110 views
why the thermal stability decreases across the period in s-block elements ?
1. 1 answer
2. asked by meme
3. 1,106 views
what implications do psychological theories of criminal behavior have for public policy?
1. 2 answers
2. asked by Stacy
3. 1,083 views
A pyramid is inscribed in a cube whose volume is 52(pi) cm^3. The volume of a sphere is equal to the volume of this pyramid.
1. 1 answer
2. asked by Joe
3. 1,077 views
Awheel increases its speed from 45 revolutions per minute to 90 revolutione per minute in 30 seconds.find angular acceralation
1. 1 answer
2. asked by Sostine
3. 1,055 views
10 girls have their average age 14 year and 12 boys have their average age as 16 years . when 6 boys from these 12 join tha 10
1. 0 answers
2. asked by shweta
3. 1,045 views
What is speed of light in air
1. 1 answer
2. asked by Sostine
3. 1,033 views
21. How do fears of future economic problems affect GDP?A. Businesses will invest more money in the short term to ensure higher
1. 0 answers
2. asked by Codey
3. 1,016 views
The project i have to do is for art.Well basically i need to think of a yellow page advertisement design. As with all
1. 1 answer
2. asked by KATHY >> PLEASE HELP
3. 1,010 views
Six and one-half foot-pounds of work is required to compress a spring 3 inches from its natural length. Find the work required
1. 3 answers
2. asked by brittney
3. 975 views
How many terminal zeros are at the end of (20!)?
1. 7 answers
2. asked by Joe
3. 963 views
12. The main economic variables that affect business cycles include all the following EXCEPT.A. Interest rates B. External
1. 0 answers
2. asked by Adelle
3. 959 views
a tire manufacturer believes that the tread life of its tires are normally distributed and will lst an average of 60,000 miles
1. 2 answers
2. asked by monk
3. 943 views
a diagonal of a rectangle is 10 cm long. what is its perimeter.
1. 2 answers
2. asked by shweta
3. 928 views
prove that the following numbers are irrational:-(i)4 + root 5 ii)4/root3
1. 1 answer
2. asked by hehee
3. 927 views
It's been a few years since I've done algebra, and many more since we've been expected to do it without a calculator like the
1. 3 answers
2. asked by John
3. 906 views
one angle of an isosceles triangle is 40 degrees. what are the two possible sizes for the larger angle(s) in this triangle?
1. 0 answers
2. asked by montana
3. 902 views
Need a thesis and a full sentence outline. Original thesis is to long. I am doing a paper on wiki leaks, I have information on
1. 1 answer
2. asked by Brenda
3. 893 views
Work of 1 joules is done in stretching a spring from its natural length to 14 cm beyond its natural length. What is the force
1. 0 answers
2. asked by Kim
3. 880 views
An 80.9 kg astronaut is taking a space walk to work on the engines of his ship, which is drifting through space with a constant
1. 0 answers
2. asked by jojo
3. 865 views
The weight of lolly pops in a box is normally distributed with a mean of 5kg and a standard deviation of 0.1kg. What is the
1. 1 answer
2. asked by TUVALU
3. 859 views
true or false? the function f-1 (x)-x/9 is the inverse function of f(x)=9x
1. 1 answer
2. asked by Altagracia
3. 849 views
The perimeter of a triangle is 24 cm. One side is 2 cm longer than the shortest side. The longest side is 2 cm less than twice
1. 3 answers
2. asked by Sammi
3. 846 views
A softball of mass 0.220 kg that is moving with a speed of 4.0 m/s (in the positive direction) collides head-on and elastically
1. 1 answer
2. asked by Nick
3. 845 views
A rectangular pizza has a width of 5 in. and a length of 10 in. The pizza is cut into 8 congruent triangular slices. What is the
1. 2 answers
2. asked by hallie
3. 838 views
Solve the following system of linear equations using the matrix inverse method3x + 2y = 7 4x + 3y =10
1. 0 answers
2. asked by MATRIX
3. 836 views
Factor completely and then place the factors in the proper location on the grid.4n2 + 28n + 49
1. 2 answers
2. asked by vishal
3. 823 views
The time required to finish a test in normally distributed with a mean of 80 minutes and a standarddeviation of 15 minutes. What
1. 1 answer
2. asked by chelsa
3. 813 views
Resistors R1= 10ohms, R2= 40 ohms and R3= 70 ohms are connected in series. The total resistance in ohms of this combination is:A
1. 3 answers
2. asked by alice
3. 807 views
if m+2/5=1/2If , then which of the following is true?2m + 4 = 5 m + 2 = 2 2m + 2 = 5 m + 4 = 6
1. 1 answer
2. asked by Daniel
3. 790 views
Figures of speech in Gwendolyn Brooks Poem Medgar Evers?
1. 1 answer
2. asked by Raven
3. 774 views
1. Find the distance between the pair of points. Round to the nearest tenth is necessary. (-10, 4) and (6, 12)a. 11.4 b. 17.9 c.
1. 2 answers
2. asked by Cheryl
3. 772 views
The playing surface in the game of curling is a rectangular sheet of ice with an area of about 225 m^2. The width is about 40m
1. 2 answers
2. asked by Rebecca
3. 758 views
how much force is necessary to stop a 2500 pound car from rolling down a 40degree slope
1. 1 answer
2. asked by Anonymous
3. 749 views
A volume of 25.0 mL of 0.100 M CH3CO2H is titrated with 0.100 M NaOH. What is the pH after the addition of 12.5 mL of NaOH? (Ka
1. 1 answer
2. asked by Al
3. 749 views
I got the question on corruption in the play hamlet for homework. I wonder should I focus on the Danish court in general (for
1. 7 answers
2. asked by Viola
3. 749 views
What does 'Without your two great political parties cutting across economic and geographic interests democracy as you know it
1. 2 answers
2. asked by delores
3. 722 views
One difference between tragedy and comedy is that tragedyA. uses supernatural elements. B. usually features an extraordinary
1. 1 answer
2. asked by Anonymous
3. 722 views
Solve using the quadratic formula. Express answers as exact roots and as approximate roots, to the nearest hundredth.b) k^2 - 9k
1. 1 answer
2. asked by Rebecca
3. 712 views
Ok..I think I know the answer, but I have not been able to find it anywhere...An electrical field is best described as A)fact
1. 0 answers
2. asked by reem
3. 695 views
A motorcycle leaves Colorado Springs traveling north at an average speed of 47 miles per hour. One hour later, a car leaves
1. 0 answers
2. asked by elaine
3. 693 views
Can you please identify the adverbs and adjectives in the following paragraph.Having credit cards could get some people into
1. 2 answers
2. asked by Tina
3. 688 views
If Brittany has a 49.7% grade average then for her final exam that is worth 20% of the grade and she gets a 90% what would her
1. 1 answer
2. asked by Anonymous
3. 669 views
37. A person deposited $500 in a savings account that pays 5% annual interest that iscompounded yearly. At the end of 10 years,
1. 1 answer
2. asked by Anonymous
3. 667 views
calculate of EPS and retained earning:year ended2009 with a net profit before taxes of $218000. the company is subject to a 40%
1. 1 answer
2. asked by sweety
3. 665 views
The division between Shia and Sunni Muslims originally arose over
1. 1 answer
2. asked by jerick
3. 641 views
PRessure is measured in Pascals (Pa). What combination of units is the same as a Pascal?and When you exert a force on a fluid in
1. 0 answers
2. asked by Erika
3. 630 views
if you are in a spacecraft moving away from earth, how would your weight change as your distance from earth increases?
1. 0 answers
2. asked by deanna
3. 627 views
It is true that ______a) few plants grow well around water b) plants are better able to seek water than are animals c) water
1. 0 answers
2. asked by Joey
3. 621 views
tha breath of rectangle plot is 0.6 times its lenth.if twice tha perimeter of tha plot is 320 meters.what is tha lenth of tha
1. 1 answer
2. asked by shweta
3. 620 views
An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located?
1. 0 answers
2. asked by Anonymous
3. 620 views
how do you write the number 12,346,823 in expanded form
1. 2 answers
2. asked by valeria
3. 613 views
Compute the number of eleven-digit integers that can be formed using all of seven 1s and four 0s if you never start of end with
1. 1 answer
2. asked by Joe
3. 611 views
Given the following data at 298K, calculate delta S for :2Ag2O(s) -> 4Ag(s) +O2(g) deltaS(J/mol.K)121.3 42.6 205.2
1. 1 answer
2. asked by Amy
3. 608 views
if 25% of all students asked say they spend too much time on homework, and 12 students are selected at random, what is the
1. 1 answer
2. asked by Mo
3. 606 views
TRUE OR FALSE:9. Assume that the Minimum Wage has increased to $14 from $10. If the total labour-income at the wage of $14 is
1. 0 answers
2. asked by Lena
3. 605 views
: what is the Ka of butanoic acid whose pka is4.82?show workkkk please
1. 1 answer
2. asked by destiny
3. 602 views
Afly wheel is making 180 rev/min and after 20s,its running at 120 rev/min.how many rev will it make and what time would ellapse
1. 1 answer
2. asked by Sostine
3. 600 views
Write down the objective function and the constraints for the given linear programming problem.A local herb shop is producing
1. 1 answer
2. asked by LAINE
3. 599 views
The area of the front cover of a daily journal is 273cm^2. , and the length is 8cm greater than the width. What are the
1. 1 answer
2. asked by Rebecca
3. 597 views
For the reaction NO2 + NO = N2O3If at a particular temperature, K was 575 and the equilibrium concentration of N2O3 was 2.5M,
1. 1 answer
2. asked by Moriah
3. 567 views
What changes would you make to the below paper?The Dark Knight was the most popular film of 2008. Unlike most popular summer
1. 5 answers
2. asked by Joseph
3. 567 views
The reactivity of the alkali metals increases in the order?A. Na, K, Li B. K, Na, Li C. Li, Na, K D. Li, K, Na
1. 2 answers
2. asked by meme
3. 558 views
kailash gave one-third of his money to keshav.keshav gave three-fourth of tha money he received from kailash to saket.if sanket
1. 4 answers
2. asked by shweta
3. 555 views
A student in the front row of a concert is at a distance of 2 m from the speaker. They hear the sound at 140dB. What is the
1. 1 answer
2. asked by marinana
3. 554 views
Calculate the time taken for atrain to travel 1000m.if its initial speed 30m/s and has constant acceralation of 0.1m/s^2.
1. 2 answers
2. asked by Sostine
3. 552 views
if ratio is 5:12 and 12 equals 136 what does 5 equal?
1. 1 answer
2. asked by ann
3. 551 views
For this activity, consider one of the products below that you are familiar with. Think about how this product is marketed and
1. 1 answer
2. asked by Rose
3. 546 views
Sorry had to adress this to you as you're the only tutor online right now, and I really need help. My teacher looked at my
1. 10 answers
2. asked by Emma
3. 543 views
Essay; show all work. Bob’s Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 2x3
1. 1 answer
2. asked by joel
3. 543 views

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