Questions Asked on May 3, 2010

can you unscramble this spanish word: amiaramtdrs?
1. 11 answers
2. asked by j.c.
3. 8,702 views
Electrical system are governed by Ohm's law, which states that V = IR, where V=voltate, I=current, and R=resistance. If the
1. 1 answer
2. asked by christine
3. 7,027 views
A battery is constructed based on the oxidation of magnesium and the reduction of Cu^2+. The initial concentrations of Mg^2+ and
1. 2 answers
2. asked by Emma
3. 6,545 views
Boyle's law states that if the temperature of a gas remains constant, then PV = c. Where P is the pressure, V is the volume, and
1. 2 answers
2. asked by Hussain
3. 6,232 views
Show that if a rectangle has its base on the x-axis and two of its vertices on the curve y = e^-x^2 , then the rectangle will
1. 1 answer
2. asked by Hou
3. 5,277 views
If a certain oxide of nitrogen weighing 0.11g gives 56 ml of nitrogen and another oxide of nitrogen weighing 0.15 g gives the
1. 4 answers
2. asked by Akashdeep
3. 5,130 views
1. The problem is so difficult that I cannot solve it.2. The problem is too difficult for me to solve. 3. It is too difficult
1. 3 answers
2. asked by rfvv
3. 4,967 views
Which one of the following pairs of 0.100 mol L-1 solutions, when mixed, will produce a buffer solution?A. 50. mL of aqueous
1. 1 answer
2. asked by Macky
3. 4,455 views
What is the bond order of the diatomic molecule BN and is it paramagnetic or diamagnetic?
1. 2 answers
2. asked by Coldier
3. 4,347 views
Which of the following substances has the greatest solubility in water?A. Ca(OH)2, Ksp = 6.5 × 10-6 B. Ag2SO4, Ksp = 1.5 ×
1. 2 answers
2. asked by Marco
3. 4,289 views
A 280 g wood block is firmly attached to a very light horizontal spring, as shown in the figure . The block can slide along a
1. 3 answers
2. asked by peyton
3. 3,784 views
8sin^2x+sinxcosx+cos^2x=4
1. 2 answers
2. asked by LiNnda
3. 3,711 views
A 6.6 × 10–4 M solution of MnSO4 is gradually made more basic by adding NaOH. At what pH will manganese(II) hydroxide begin
1. 1 answer
2. asked by Anonymous
3. 3,419 views
Which is an example of verbal irony as spoken by Antigone?a. "You have yourself to consider, after all." b. "You must decide
1. 11 answers
2. asked by Alyssa
3. 2,677 views
3. Use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition
1. 3 answers
2. asked by Sally
3. 2,586 views
If you shout across a canyon and hear the echo 0.57 s later, how wide is the canyon?
1. 2 answers
2. asked by Lua
3. 2,564 views
In the redox reaction:4NH3(g)+3O2(g)-->2N2(g)+6H2O(l) the number of moles of electrons transferred is...
1. 1 answer
2. asked by Metia
3. 2,542 views
what mass of so2 is produced from the reaction between 31.5g of s8 and 8.65g of o2?I know how to find the limiting reagents and
1. 3 answers
2. asked by Jill
3. 2,462 views
What is this in Spanish:You get dressed at 8 o'clock. Te vistes a las ocho. ? Is this the correct translation? If not, then what
1. 4 answers
2. asked by Aly
3. 2,343 views
Nitrogen forms five compounds with oxygen in which 1.0 g of nitrogen combines with 0.572,1.14,1.73,2.28 and 2.85 g of oxygen
1. 2 answers
2. asked by Akashdeep
3. 2,182 views
the statue of liberty is 150 feet tall, and stands on a 150 foot pedestal. How far from the base should you stand to have the
1. 5 answers
2. asked by Chris
3. 2,084 views
A polynomial function with rational coefficients has the following zeros. Find all additional zeros.2, -2 + �ã10
1. 1 answer
2. asked by Christopher
3. 1,932 views
True or False? An equilibrium constant K_c=1x10^7 for a reaction indicates that the reaction favors product formation.
1. 1 answer
2. asked by Sheila
3. 1,801 views
Two bowling balls each have a mass of 6.8kg. the speres are located nest to one another with their centers 21.8 cm apart. what
1. 2 answers
2. asked by Lorena
3. 1,792 views
identify specific examples of how the roles you play with family and friends differ from those you play in other social groups.
1. 2 answers
2. asked by sam
3. 1,760 views
a) moles of malachite in 1g:1g / (221.12g/mol) = .004522 mol (b) moles of CuO produced: .72g / (79.55g/mol) = .009051 mol (c)
1. 1 answer
2. asked by Sally
3. 1,726 views
Write an expression for the most apparent nth term of the sequence. Assume n begins with 1.3,7,11,15,19 My answer was an= 3 +4n
1. 2 answers
2. asked by Abbey(Please help)
3. 1,706 views
A window washer pulls herself upward using the bucket-pulley apparatus shown in the figure . The mass of the person plus the
1. 2 answers
2. asked by Anonymous
3. 1,688 views
Caesar disregards the omens for all of the following reasons exceptA. he does not trust the augurers. B. he does not want to
1. 1 answer
2. asked by Alyssa
3. 1,640 views
what grammatical name is given to the expression what made her choose me.
1. 3 answers
2. asked by excellent
3. 1,550 views
1. Refer to the following line m:b. Name two rays on m that have endpoint B. d. Find a simpler name for the intersection of rays
1. 4 answers
2. asked by jessica
3. 1,488 views
Find the position function s(t) given acceleration a(t)=3t if v(2)=0 and s(2)=1.
1. 1 answer
2. asked by yach
3. 1,417 views
The following reaction would produce a(n) __________.R-OH + R'COOH →
1. 4 answers
2. asked by Tom
3. 1,395 views
A 75 kg pilot flies in her plane in a loop and notices that at the top of the loop, where the plane is completely uspside down
1. 1 answer
2. asked by Maira
3. 1,381 views
A bicycle wheel has a diameter of 26 inches. About how far will it travel in one revolution?
1. 3 answers
2. asked by nancy
3. 1,366 views
Find a rule. Write the rule as an equation.Input X 12, 47, 9 Output Y 32, 67, 29 Rule:____________ Equation:_______________
1. 0 answers
2. asked by Levi
3. 1,347 views
supply chain management case analysis Dream Beauty Company questions and answersCan't find questions to this case analysis
1. 1 answer
2. asked by Ashley
3. 1,344 views
A buffer contains 5.00 M acetic acid and 5.00 M acetate anion. Gaseous HCl (0.010 mole) is added to 1.00 L of this buffer
1. 1 answer
2. asked by Ivana
3. 1,315 views
1.) Find the domain and range for:f(x)= 4x-20/ the square root of 36-x^2 2.) Solve the equation: log6 (x-11) + log6 (x-6) = 2
1. 2 answers
2. asked by Frank
3. 1,226 views
2cos^2x-3sinx=0
1. 2 answers
2. asked by LiNnda
3. 1,204 views
Which of the following substances will increase the molar solubility of nickel(II) phosphate in a saturated solution?Na3PO4 HNO3
1. 2 answers
2. asked by Anonymous
3. 1,196 views
Calculate the boiling points of freezing points of the following solutions in water.a) boiling point of a 2.25m solution of
1. 1 answer
2. asked by Ralph
3. 1,193 views
An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.5 Angstrom, and the density of the
1. 3 answers
2. asked by Anna
3. 1,185 views
a sample of gas is warmed from 15.o degrees celsius to 45.o celcius at a constant pressure. its initial volume is 1.75 liters.
1. 1 answer
2. asked by Adina
3. 1,185 views
Not sure where to go next. I need to solve this quadratic equation 7x^2-5=0.This is what I have so far, not sure where/what to
1. 1 answer
2. asked by dani
3. 1,179 views
Two pieces of cake weigh as much as one apple and one cherry. One apple weighs as much as five cherries and one piece of cake.
1. 1 answer
2. asked by Mia
3. 1,174 views
What is the pH of the solution created by combining 12.20 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)?with 8.00
1. 6 answers
2. asked by Amphee
3. 1,174 views
Three small spheres are placed at fixed points along the x-axis, whose positive direction points towards the right.Sphere A is
1. 1 answer
2. asked by Jay
3. 1,170 views
Whether A dissolves in B depends on a [imbalance, balance] between favorable entropy and favorable enthalpy.One of the two
1. 1 answer
2. asked by Ana
3. 1,168 views
The process of naming broad product-markets and then segmenting them in order to select target markets and develop suitable
1. 0 answers
2. asked by pri
3. 1,159 views
Classify the triangle as right, acute, or obtuse if the measures of its sides are 28, 46, and 53.
1. 2 answers
2. asked by Matthew
3. 1,151 views
A buffer is prepared by adding 300.0 mL of 2.0 M NaOH to 500.0 mL of 2.0 M CH3COOH. What is the pH of this buffer? Ka = 1.8 ×
1. 1 answer
2. asked by Anavia
3. 1,142 views
NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l)How do I calculate the oxidation states of Nitrogen and figure out if it is reduced,
1. 2 answers
2. asked by Carli
3. 1,142 views
An elevator in a tall building is allowed to reach a maximum speed of 3.0 m/s going down. What must the tension be in the cable
1. 1 answer
2. asked by Anonymous
3. 1,141 views
Given:Cr3+(aq) + 3e¨C Cr(s); E¡ã = ¨C0.74 V Pb2+(aq) + 2e¨C Pb(s); E¡ã = ¨C0.13 V What is the standard cell
1. 1 answer
2. asked by Anonymous
3. 1,140 views
I'm reposting this, because Mathmate's answer hasn't directed me to the WHY? part of the question. Any prompts appreciated.The
1. 1 answer
2. asked by charlie
3. 1,130 views
For my environmental science reseaerch paper on coral reefs I wanted to copy this intro paragraph from my workbook:Coral reefs
1. 0 answers
2. asked by y912f
3. 1,095 views
What is the change in entropy when 0.290 g of silicon is burned in excess oxygen to yield silicon dioxide at 298 K?Si(s) + O2(g)
1. 1 answer
2. asked by Anonymous
3. 1,082 views
A solution is made by adding 5.0 g Na2CO3 * 10H2O to enough water to make a 500 mL solution. what is the molarity.I have: M=mol
1. 1 answer
2. asked by Maggie
3. 1,079 views
what principle was ocerturned in Brown v Board of education?
1. 0 answers
2. asked by cornelius
3. 1,074 views
For a question like “calculate the pH of an aq.solution that is 1.0 M CH3COOH and 1.0 M CH3COONa, how do you know to write the
1. 1 answer
2. asked by Nick
3. 1,060 views
6. A sociologist interested in cultural differences compared women of two ethinic groups on a Role Approval Index (high scores
1. 2 answers
2. asked by Anonymous
3. 1,052 views
To form a molecule with a trigonal bipyramidal electron geometry, what set of pure atomic orbitals must be mixed?The answer is
1. 1 answer
2. asked by Danielle
3. 1,048 views
Please help me!SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Verify that
1. 1 answer
2. asked by Lilli
3. 1,044 views
Consider the following reaction:3C(s) + 4H2(g) -> C3H8(g); DH° = –104.7 kJ; DS° = –287.4 J/K at 298 K What is the
1. 0 answers
2. asked by Anonymous
3. 1,038 views
From these two reactions at 298 K,V2O3(s) + 3CO(g) -> 2V(s) + 3CO2(g); DH° = 369.8 kJ; DS° = 8.3 J/K V2O5(s) + 2CO(g) ->
1. 1 answer
2. asked by Anonymous
3. 1,029 views
How fast (in rpm) must a centrifuge rotate if a particle 9.50 cm from the axis of rotation is to experience an acceleration of
1. 1 answer
2. asked by peyton
3. 1,018 views
all of the following are true of gestalt therapy except
1. 2 answers
2. asked by patrick
3. 999 views
What is the concentration of silver(I) ion in a saturated solution of silver(I) carbonate containing 0.0092 M Na2CO3? For
1. 1 answer
2. asked by Anonymous
3. 987 views
I'm confused.Can someone tell me if I have done this correct.I'm trying to get the average using a weighted scale:TOTAL GRADES:
1. 3 answers
2. asked by Sue
3. 972 views
The longer the hydrogen bond, do the Intermolecular Forces increase or decrease.So if molecule A has a H-bond with a length of
1. 0 answers
2. asked by ChEm
3. 942 views
a volume of 50mL of a standard HCl solution is needed to neutralize 50 mL of 1x10-2 M NaOH. what volume of this HCl solution is
1. 1 answer
2. asked by Bianca
3. 937 views
Find cos(s+t) if cos s= -1/2 and sin t= 3/5, s and t are in quadrant II.I got the answer to be -4/10 plus -3sqrt(3)/10. Is that
1. 1 answer
2. asked by Anonymous
3. 901 views
NH3(g) + 202(g) = HNO3(aq) +H2O (l)Is this reaction a combination, decomposition, single replacement, double replacment or
1. 6 answers
2. asked by Al
3. 885 views
Which salt has the highest molar solubility in pure water?Cd(OH)2, Fe(OH)2, PbCrO4, CdCO3, Mn(OH)2
1. 1 answer
2. asked by V
3. 880 views
an 80 kg physics student is riding the cajun cliffhanger. this ride had a diameter of 8.0m (u:0.06)the ride produces enough
1. 1 answer
2. asked by Maira
3. 870 views
2H20(l) = 2H2 (g) +O2 (g)For the above, if 1.50 mg of water is decomposed, what mass of hydrogen is procduced? (1 Mg=10^6g=1
1. 3 answers
2. asked by Carli
3. 868 views
From these two reactions at 298 K,V2O3(s) + 3CO(g) -> 2V(s) + 3CO2(g); DH° = 369.8 kJ; DS° = 8.3 J/K V2O5(s) + 2CO(g) ->
1. 1 answer
2. asked by Anonymous
3. 857 views
Calculate the cell potential of a cell operating with the following reaction at 25°C, in which [Cr2O72‾ ] = 0.030 M, [I ‾ ]
1. 2 answers
2. asked by Long
3. 848 views
What is DG° at 298 K for the following reaction?Pb(s) + PbO2(s) -> 2PbO(s) Substance DG°f (kJ/mol) at 298 K PbO(s) –187.9
1. 1 answer
2. asked by Anonymous
3. 844 views
Shirley has 18 coins. One sixth of the coins are quarters, one third of the coins are dimes, and one half of the coins are
1. 1 answer
2. asked by Mia
3. 841 views
Find the number of words formed by permuting all the lettersof the word INDEPENDENCE such that the E's do not come together.
1. 2 answers
2. asked by guitarman
3. 840 views
Distance travelled in a week by sales staff employed by nationwide security firm is approximately normally distributed with a
1. 0 answers
2. asked by Anonymous
3. 836 views
Given:H2 (g) + O2 (g) ⇌ H2O2 (g) K = 2.3 x 106 at 600 K 2 H2 (g) + O2 (g) ⇌ 2 H2O (g) K = 1.8 x 1037 at 600 K Calculate
1. 1 answer
2. asked by Claire
3. 825 views
Given:Al3+(aq) + 3e– Al(s); E° = –1.66 V Cl2(g) + 2e– 2Cl–(aq); E° = 1.36 V What is ∆G° for the following
1. 0 answers
2. asked by Anonymous
3. 815 views
Oh gosh... I need help, with like everything...[Show all work] Aluminum nitrite & ammonium chloride react to form aluminum
1. 2 answers
2. asked by Nikki
3. 792 views
What substances will increase the molar solubility of nickel(II) phosphate in a saturated solution?
1. 0 answers
2. asked by Anonymous
3. 788 views
When trying to solvearctan(sqrt 567.2 / -459.6) my answer was -2.96. My teacher said that i handled the radical wrong. She said
1. 2 answers
2. asked by Abbey(Please help)
3. 787 views
What precautions must be taken when you introduce the mixture of compounds to be separated onto the absorbent column
1. 1 answer
2. asked by James
3. 781 views
the perimeter of a rectangular yard is 270 feet. If its length is 25 feet greater than its width what are the dimensions of the
1. 1 answer
2. asked by bev
3. 778 views
a) A population of 460 animals that increases at an annual rate of 15%. Write an exponential function to model.b) Write an
1. 0 answers
2. asked by Alex
3. 763 views
what tools did egyptians use to bulid pyramids
1. 0 answers
2. asked by james
3. 763 views
Find the center, vertices, foci, and eccentricity of the ellipse.9x^2 + 4y^2 - 36x + 8y + 31 = 0 My answer was: center=(2,1)
1. 2 answers
2. asked by Abbey(Please help)
3. 761 views
juan is 8 years than his sister rosa. one day, he tells rosa that he is twice her age, but will only be twice her age for one
1. 2 answers
2. asked by wan
3. 750 views
is 67% a rational or irrational number
1. 1 answer
2. asked by nikki
3. 748 views
What is the concentration of silver(I) ion in a saturated solution of silver(I) carbonate containing 0.0092 M Na2CO3? For
1. 1 answer
2. asked by Anonymous
3. 745 views
Help please! I need to identify an organic compound and tell the functional group of the molecule- the compound is single-bonded
1. 3 answers
2. asked by Julia
3. 744 views
The Great Pyramid of Giza was built around the year 2560 BC. It was originally 481 ft high with a square base measuring 751 ft
1. 0 answers
2. asked by nicole
3. 736 views
for the system of inequalities y >= 2x - 1 and y <= 3x - 1, which of the following statements best descibes the ordered pair
1. 1 answer
2. asked by tim
3. 726 views
1. Is it too late to call him.(What does 'it' refer to in the sentence? Weather?)
1. 1 answer
2. asked by rfvv
3. 719 views

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