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Questions Asked on November 15, 2010

A bottle of wine contains 12.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration
1. 4 answers
2. asked by Anonymous
3. 11,310 views
given the ionic formula X2O What is the charge of X?
1. 2 answers
2. asked by HelloHello
3. 7,111 views
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 1.0 J
1. 2 answers
2. asked by Dan
3. 6,143 views
Consider an electrochemical cell based on the following cell diagram:Pt | Pu3+(aq), Pu4+(aq) || Cl2(g), Cl−(aq) | Pt Given
1. 3 answers
2. asked by Diana
3. 5,776 views
A current of 0.80 A was applied to an electrolytic cell containing molten CdCl2 for 2.5 hours. Calculate the mass (in grams) of
1. 4 answers
2. asked by Diana
3. 5,580 views
What is the order of1.5 x 10^3, 1.4 x 10^-1, 2 x 10^3, and 1.4 x 1-^-2 from least to greatest?
1. 1 answer
2. asked by Daniel
3. 5,173 views
Write a balanced equation using the correct formulas and include conditions (s,l,g or aq) for each of the following reactions.1)
1. 5 answers
2. asked by TMV
3. 4,957 views
What is the equation for the standard enthalpy of formation for magnesium nitrate?
1. 1 answer
2. asked by Andrew
3. 4,949 views
Calculate the cell emf (in volts) for the following reaction at 25°C:Ni(s) + 2 Cu2+(0.010 M) → Ni2+(0.0010 M) + 2 Cu+(1.0 M)
1. 4 answers
2. asked by Diana
3. 4,233 views
the height of the upper falls at Yellowstone falls is 33.2m. when the water reaches the botton of the falls, its speed is 25.8
1. 3 answers
2. asked by paul
3. 3,738 views
If a brown-eyed man marries a blue-eyed woman and they have ten children, all brown-eyed, can you be certain that the man is
1. 2 answers
2. asked by laurie
3. 3,732 views
H2O (liquid) yields H2O gas delta H= +44kJ.How much heat is evolved when 9.0 grams of water vapor is condensed to liquid water?
1. 1 answer
2. asked by Katelyn
3. 3,624 views
A sample of oxygen is collected over water at 22°C and 762 torr. What is the partial pressure of the dry oxygen? The vapor
1. 1 answer
2. asked by Kiesha
3. 3,347 views
Determine the 10th term of the sequence 3, 10, 28, 72, 176... State the general term.
1. 3 answers
2. asked by Emily
3. 3,248 views
A 10g sample of an unknown ionic compound is dissolved, and the solution is treated with enough AgNO3 to precipitate all the
1. 3 answers
2. asked by Jay
3. 3,233 views
Can you please tell me if these are right?Classify the solutes in the following equations as a weak electrolyte, a strong
1. 1 answer
2. asked by Jason
3. 3,226 views
A flat slab of styrofoam, with a density of 32 kg/m^3, floats on a lake. What is the minimum volume the slab must have so that a
1. 3 answers
2. asked by Amber
3. 3,014 views
A bakery is making whole-wheat bread and apple bran muffins. For each batch of bread they make $35 profit. For each batch of
1. 5 answers
2. asked by Maria
3. 2,711 views
How many hours will it take to produce 78.0 g of Al metal by the reduction of Al3+ in an electrolytic cell with a current of
1. 1 answer
2. asked by Diana
3. 2,536 views
a particle moves on the x-axis in such a way that its position at time t is given by x(t)=3t^5-25^3+60t. for what values of t is
1. 1 answer
2. asked by paul
3. 2,447 views
Suppose a white dwarf star has a diameter of approximately 1.6692x10^4 km. Us the formula 4pie^2 to find the approximate surface
1. 2 answers
2. asked by Daniel
3. 2,364 views
About 3/4 of the track team are girls. About 3/4 of these girls are in 8 th grade. What fraction of th e students are grade 8
1. 1 answer
2. asked by Tanner
3. 2,286 views
Fingernail-polish remover is primarily acetone (C3H6O). How many acetone molecules are in a bottle of acetone with a volume of
1. 1 answer
2. asked by sam
3. 2,070 views
If sin(theta)=15/17 and cos(beta)=(-5/13 (both theta and beta are in quadrant II) find tan(theta+beta)
1. 5 answers
2. asked by Riley
3. 2,025 views
Consider a 20.0mL sample of 0.105M HC2H3O2 is titrated with 0.125M NaOH.Ka=1.8x10^-5. Determine each of the following: a) the
1. 7 answers
2. asked by bobjahng2
3. 1,948 views
During the combustion of 5.00 g of octane, C8H18, 239.5 kcal is released.a) What is the sign of (delta)H for this reaction? b)
1. 2 answers
2. asked by Patrick
3. 1,936 views
consider the following balance chemical equation:2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4
1. 1 answer
2. asked by julia
3. 1,804 views
Jill and her friends have built a small rocket that soon after lift-off reaches a speed of 900 m/sHow high above the Earth can
1. 1 answer
2. asked by Michael
3. 1,803 views
Find all relative extrema and points of inflection of the function:f(x) = sin (x/2) 0 =< x =< 4pi =< is supposed to be less than
1. 1 answer
2. asked by James
3. 1,793 views
Réécrivez les phrases avec l'adverbe qui correspond a chaque adjectif. Faites attention au placement de l'adverbe.1. Karine et
1. 3 answers
2. asked by Sarah Smith
3. 1,783 views
You are buying beads and string to make a necklace. The string costs $1.50, a package of 10 decorative beads costs $.50, and a
1. 4 answers
2. asked by Alissa
3. 1,781 views
find the percent of decrease from 280 to 210. round to the nearest tenth of percent if necessary
1. 6 answers
2. asked by Lilly
3. 1,775 views
write the formula for hydrogen and bromine forming hydrogen bromide& nickel and oxygen forming nickel (II) oxide
1. 1 answer
2. asked by alicia
3. 1,775 views
How many pi bonds and sigma bonds are in ritalin. I counted 4 pi bonds(double bonds), and 18 sigma bonds(single bonds> I want to
1. 1 answer
2. asked by Kristy
3. 1,765 views
What is the difference between deviance and nonconformity?
1. 4 answers
2. asked by Rachel
3. 1,754 views
The volume of a gas is 5.80 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.65 L?
1. 1 answer
2. asked by rasheedat
3. 1,668 views
What energy change is associated with the reaction to obtain one mole of H2 from one mole of water vapor? The balanced equation
1. 4 answers
2. asked by Kai
3. 1,657 views
A boy pushes his friend across a skating rink. Since the frictional forces are very small, the force exerted by the boy on his
1. 1 answer
2. asked by Taylor
3. 1,641 views
The balance sheets of Petrello Company and Sanchez Company as of January 1, 2011, are presented below. On that date, after an
1. 1 answer
2. asked by Cynthia
3. 1,573 views
Compare ionic, covalent, and hydrogen bonding, and fully describe an example of each.Is this right and I need help with an
1. 1 answer
2. asked by Danielle
3. 1,560 views
A long wire that carries a current is bent into a solenoid with upward current in the front looking. If the observer could "see"
1. 1 answer
2. asked by Blake
3. 1,530 views
Evaluate 4log(4)8Possible answers are: 4 0 8 1 Where do I start-I don't have an example to follow? Please give me a direction do
1. 6 answers
2. asked by Jesse
3. 1,509 views
Surface tension explains which of the follow-ing phenomena? I) A piece of aluminum foil floating on a lake II) A bowling ball
1. 1 answer
2. asked by Bob
3. 1,490 views
A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This
1. 1 answer
2. asked by Bella
3. 1,446 views
a 250-kg rock falls off a cliff and comes to rest on the ground, which is 40 m below the cliff . At what point is the rock's
1. 1 answer
2. asked by sharmeka
3. 1,444 views
What energy change is associated with the reaction to obtain one mole of H2 from one mole of water vapor? The balanced equation
1. 1 answer
2. asked by Kai
3. 1,442 views
Of the 4800 students at Medium Suburban College (MSC), 50 play collegiate soccer, 60 play collegiate lacrosse, and 96 play
1. 4 answers
2. asked by liz c
3. 1,439 views
How many moles of hydrogen are consumed when 40.0 L of hydrogen chloride gas are produced in the following equation?H2(g) +
1. 1 answer
2. asked by Kiesha
3. 1,433 views
Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm
1. 2 answers
2. asked by Sasha
3. 1,387 views
A ball is dropped from the top of a building. The height, , of the ball above the ground (in feet) is given as a function of
1. 2 answers
2. asked by Ashley
3. 1,382 views
1. créez six phrases a l'aide éléments des trois colonnes. Ajoutez tous les autres éléments nécessaires.A. agent de police
1. 1 answer
2. asked by Sarah Smith
3. 1,378 views
what is the simplified form of the expression?(3c^2d^4)^3(2c^5d^8)^3
1. 2 answers
2. asked by Daniel
3. 1,373 views
For the stepladder shown in Fig. 12-51, sides AC and CE are each 3.34 m long and hinged at C. Bar BD is a tie-rod 0.662 m long,
1. 2 answers
2. asked by Anonymous
3. 1,372 views
The enthalpy change for the solution process when solid sodium hydroxide dissolves in water is -44.4 kJ/mol. When a 13.6 g
1. 1 answer
2. asked by Anonymous
3. 1,331 views
A map shows the distance between a corner of Cactus Road and 1st street and the corner of 1st street snd Merle oad as 3 inches.
1. 1 answer
2. asked by Edith
3. 1,309 views
How many grams equal 6.3 mol of N2?
1. 1 answer
2. asked by pinky
3. 1,304 views
Can you please tell me if these are right?A gas has a volume of 2.8 L at a temperature of 27 degrees C. What temperature degrees
1. 1 answer
2. asked by Alice
3. 1,303 views
Liquid water has a density of 1.00g/mL at 10.0C and .996g/mL at 30.0C. Calculate the change in volume that occurs when 500mL of
1. 2 answers
2. asked by ESTR3LLA
3. 1,268 views
Calculate the mass (in grams) of water vapor produced when 56.0 grams of pure hydrogen gas burn in the air. Given the
1. 1 answer
2. asked by Brandon
3. 1,256 views
a. If a solution appears to be violet, what range of wavelength would you use for analysis of the solution?b. How about if the
1. 1 answer
2. asked by Jenna
3. 1,229 views
what is the third person singular form of the verb estar?Re-write the following sentences replacing the underlined direct object
1. 5 answers
2. asked by whitney
3. 1,228 views
how to solve this equation in the real number system:2x^(3) + 3x^(2) + 2x + 3 = 0 steps please
1. 1 answer
2. asked by Amy
3. 1,219 views
Hi,I just want to make sure I am doing this assignment correctly.The question is: How are medical coding, physician, and payer
1. 1 answer
2. asked by Aly
3. 1,208 views
Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 22 m/s, and puck 2 has an
1. 0 answers
2. asked by J Velji
3. 1,194 views
Apostrophe's Possessive NounsThe wealthier peoples class was called the gentry.
1. 3 answers
2. asked by Macaila
3. 1,190 views
Writing in math, how can estimating help you add two-digit numbers?
1. 3 answers
2. asked by David
3. 1,176 views
The X-X bond energy in the hypothetical gas, X2 is 153 kJ/mol.a. How much energy, in joules, is required to break the bond in a
1. 1 answer
2. asked by help
3. 1,162 views
Calculate the mass (in grams) of water vapor produced when 56.0 grams of pure hydrogen gas burn in the air. Given the
1. 1 answer
2. asked by Brandon
3. 1,160 views
Describe how this could happen that three different animals could each be claimed - rightfully - to be the largest of the three.
1. 1 answer
2. asked by lt
3. 1,154 views
If you are using the Internet and Web resources for a business publication, under which conditions is it not necessary to
1. 1 answer
2. asked by ron
3. 1,151 views
Use the following Info. At sea level the speed of sound in air is linearly related to air temp. If 35 degrees Celsius sound
1. 4 answers
2. asked by Kaela
3. 1,144 views
Posted by rfvv on Monday, November 15, 2010 at 6:19am.The man said,"I want you to weed this garden." (This garden seems to
1. 1 answer
2. asked by rfvv
3. 1,125 views
A cylindrical oil-storage tank is to be constructed for which the following costs apply:cost per square meter metal for sides
1. 3 answers
2. asked by sunny
3. 1,112 views
The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the
1. 2 answers
2. asked by Audrey
3. 1,107 views
The______ is an essential characteristic of the sonata form.
1. 2 answers
2. asked by Marie
3. 1,104 views
Three masses are connected by massless rigid rods. Rods AC and CB have length l= 16.6 cm. If massA=115.0 g, massB=206.0 g, and
1. 1 answer
2. asked by Bella
3. 1,095 views
use mulitplying by 1 to find an expression equivalent to (10/13) with a denominator of 39aThank you for your help.
1. 2 answers
2. asked by adore001
3. 1,053 views
thesis statement for buddhism
1. 1 answer
2. asked by jacqui
3. 1,051 views
How many grams equal 1.0 mol of Azurite, Cu3(CO3)2(OH)2?
1. 1 answer
2. asked by pinky
3. 1,044 views
consider the following balance chemical equation:2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4
1. 2 answers
2. asked by julia-Drboob22
3. 1,028 views
marty has saved $72 he spent $8 on a vid rental write a ratio as a fraction in simplest form to represent what proportion of his
1. 2 answers
2. asked by doo
3. 1,021 views
A ball is dropped from the top of a building. The height, , of the ball above the ground (in feet) is given as a function of
1. 1 answer
2. asked by Ashley
3. 1,017 views
Which of the following is NOT true about the digestive system of annelids?a. It contains setae to move the food through the
1. 2 answers
2. asked by Lily
3. 1,016 views
seeking help.Justin had $31 before spending q dollars on jeans. how much money remains? (translate phrase to an algebraic
1. 2 answers
2. asked by chasity
3. 1,013 views
What is the value of [OH-] in a 0.015 M CH3COOH solution? Ka = 1.8 x 10-5I started by writing the equation: CH3COOH + H2O <--->
1. 0 answers
2. asked by Audrey
3. 1,011 views
Hello,I have been asked to find the molar mass of ferrous ammonium sulfate [ NH4]2[Fe][SO4]2·6H2O] would i consider the molar
1. 1 answer
2. asked by Moi
3. 1,006 views
A vertical spring (ignore its mass), whose spring stiffness constant is 880 N/m, is attached to a table and is compressed down
1. 1 answer
2. asked by Joe
3. 1,000 views
When was the evolution of the socio- political milieu during the colonial period including Protestant Christianity's impact on
1. 0 answers
2. asked by Jordan
3. 998 views
In the book, THE GIVER, what did the bicycles symbolize for the Nines?
1. 2 answers
2. asked by Olivia N.
3. 991 views
calculate the total energy of a 2-kg object moving at 10m/sec 50meters above the surface.
1. 1 answer
2. asked by Anonymous
3. 990 views
The trough is in the shape of a triangular prism. It is 5 ft long and its vertical cross sections are isosceles triangles with
1. 1 answer
2. asked by LOKAA
3. 982 views
How many grams of MgF2 will dissolve in 150. mL of 0.100 M NaF solution?Ksp for MgF2 = 6.4 x 10-9
1. 0 answers
2. asked by Audrey
3. 954 views
A Ferris wheel rotates at an angular velocity of 0.20 rad/s. Starting from rest, it reaches its operating speed with an average
1. 2 answers
2. asked by michelle
3. 949 views
Meg's pension plan is an annuity with a guaranteed return of 7% interest per year (compounded monthly). She would like to retire
1. 3 answers
2. asked by liz c
3. 945 views
Tell whether the triangle with the given side is a right triangle;1.4 m,4.8 m,5m.Explain please.
1. 2 answers
2. asked by Sasha
3. 941 views
A diver running 1.2 m/s dives out horizontally from the edge of a vertical cliff and reaches the water below 3.1 s later. How
1. 1 answer
2. asked by Al
3. 941 views
A spring is hung from the ceiling. A 0.300 kg block is then attached to the free end of the spring. When released from rest, the
1. 0 answers
2. asked by john
3. 932 views
A 17 kg block is dragged over a rough, hor-izontal surface by a constant force of 170 N acting at an angle of angle 32.1◦
1. 1 answer
2. asked by mary
3. 930 views
Write the formulas for these compounds1. manganese (IV) oxide 2. nickel (II) chloride 3. zinc chloride
1. 0 answers
2. asked by Nick
3. 927 views
traveling 10,000 miles per hour how long will it take to get to jupiter from earth
1. 2 answers
2. asked by mateo
3. 923 views

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