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Questions Asked on April 16, 2012

Aqueous solutions of sodium sulfide and silver nitrate are mixed to form solid silver sulfide and aqueous sodium nitrate. The
1. 2 answers
2. asked by Sirena
3. 6,516 views
In a particular redox reaction, BrO– is oxidized to BrO3– and Cu2 is reduced to Cu . Complete and balance the equation for
1. 4 answers
2. asked by miaow
3. 5,058 views
Assume equal concentrations, rank these solutions by pH HBrO, Ca(OH)2, HCl, KOH, NH3Here's how I ranked it: highest: Ca(OH)2 >
1. 2 answers
2. asked by Katherine
3. 4,037 views
The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the
1. 2 answers
2. asked by lindiwe
3. 3,582 views
Complete and balance the following equation:NO2{-} + Cr2O7{2-} = Cr{3+} + NO3{-}
1. 1 answer
2. asked by Steven
3. 3,373 views
A sample of an iron alloy contains 92.1g Fe, 2.59g C, and 1.59g Cr. Calculate the percent by mass of each component present in
1. 3 answers
2. asked by Michelle
3. 3,233 views
A 125-g piece of metal is heated to 288 degrees celsius and dropped into 85.0 g of water at 26 degrees celsius. If the final
1. 5 answers
2. asked by Alicia
3. 3,211 views
you have to figures that are similar, large one is 28yds, and the smaller one is 8yds. give the ratio of the perimeter and the
1. 2 answers
2. asked by kevin
3. 3,189 views
A voltaic cell utilizes the following reaction and operates at 298K3Ce{4+}(aq)+Cr(s)--->3Ce{3+}(aq)+Cr{3+}(aq) {}=Charge What is
1. 1 answer
2. asked by Ethan
3. 3,130 views
To recharge a 12 V battery, a battery chargermust move 2.7 × 105 C of charge from the negative terminal to the positive
1. 1 answer
2. asked by Anonymous
3. 3,049 views
a 500ml sample of o2 gas at 24 degrees celsius was prepared by decomposing a 3% aqueous solution of hydrogen peroxide, in this
1. 1 answer
2. asked by Michelle
3. 2,983 views
In the standard (x,y) coordinate plane, if the x-coordinate of each point on a line is 4 less than twice its y-coordinate, what
1. 2 answers
2. asked by Meghan
3. 2,760 views
If the ratio of men to women in a movie theater is 1.00 when written as a decimal, what must be true?A. The ratio of women to
1. 3 answers
2. asked by Lauren
3. 2,714 views
you dissolve 0.70 moles of HCI in enough water to prepare 250ml of solution. what is the molarity of the solution you have
1. 2 answers
2. asked by aileen
3. 2,685 views
at what velocity must a conductor 75mm long cut a magnetic field of flux density 0.6T if an emf of 9V is to be induced in it?
1. 3 answers
2. asked by frank fred
3. 2,571 views
Followed by the total volume. Calculate the molarity of this solution: 0.521 mol NaCl;125 mL
1. 1 answer
2. asked by michelle
3. 2,479 views
The dH for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO (g) reacts
1. 1 answer
2. asked by tank
3. 2,370 views
If the literature value for the ΔHfus of water is 6.01 kJ/mol, how many kJ of heat energy would be required to completely melt
1. 2 answers
2. asked by Sarah
3. 2,289 views
What is the center of the conic whose equation isx^2 + 2y^2 - 6x + 8y = 0 2.Which one of the following equations represents a
1. 1 answer
2. asked by Mecie
3. 2,276 views
If a 80 lightbulb emits 4.0 of the input energy as visible light (average wavelength 550 ) uniformly in all directions, estimate
1. 4 answers
2. asked by sarah
3. 2,091 views
A Styrofoam bucket of negligible mass contains 1.60 kg of water and 0.425 kg of ice. More ice, from a refrigerator at -14.8
1. 1 answer
2. asked by Joey
3. 1,984 views
a box containing pens,nickels,and dimes has 13 coins with a total value of 83 cents.how many coins of each type are in the box?
1. 1 answer
2. asked by Dalcy
3. 1,957 views
A math teacher is randomly distributing 15 rulers with centimeter labels and 10 rulers without centimeter labels. What is the
1. 1 answer
2. asked by John
3. 1,885 views
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reactionCaCO3(s)->CaO(s)+CO2(g)
1. 3 answers
2. asked by John
3. 1,857 views
How do you find the exact circular function value of csc(-23pi/6)? I don't know how to do the pi symbol on the keyboard.
1. 1 answer
2. asked by Bailie
3. 1,771 views
calculate the net charge on a substance consisting of a combination of 3.0X10^13 protons and 8.6X10^13 electrons.
1. 2 answers
2. asked by jandy
3. 1,739 views
A gas is at 20°C. To what temperature must it be raised to triple the rms speed of its molecules?Ans: 2364oC I don't get how
1. 2 answers
2. asked by Jenny
3. 1,710 views
A metal container, which has a mass of 9.4 kg contains 14.2 kg of water. A 1.7-kg piece of the same metal, initially at a
1. 2 answers
2. asked by anonymous
3. 1,708 views
A propane tank has the shape of a circular cylinder with a hemisphere at each end. The cylinder is 6 feet long and volume of the
1. 2 answers
2. asked by Missy
3. 1,691 views
A performance was rated on a 3-point scale by an audience. A rating of 1 was given by 30%, a rating of 2 was given by 60%, and a
1. 1 answer
2. asked by Callie
3. 1,681 views
A building has 4 stories that are each 15 feet high. A scale drawing has the height of the building at 5 inches.Which of the
1. 1 answer
2. asked by ben
3. 1,654 views
A standard doorway measures 6 feet 8 inches by 3 feet. What is the largest dimension that will fit through the doorway without
1. 1 answer
2. asked by Zayn
3. 1,649 views
in a bizzare but harmless accident, superman fell from the top of the eiffel tower. how fast was superman traveling when he hit
1. 1 answer
2. asked by Anonymous
3. 1,614 views
For the chemical reaction CH3Br + OH- CH3OH + Br-, which of the following would speed up the reaction?increasing the CH3Br
1. 1 answer
2. asked by Lucy
3. 1,609 views
Outline a separation scheme for isolating pure isopentyl acetate from the reaction mixture.
1. 1 answer
2. asked by Peter
3. 1,574 views
Estimate the number of pints In 445 ounces?
1. 7 answers
2. asked by Marie
3. 1,566 views
what mass of ethanol(C2H5OH) will be required to prepare a 2.00m solution in 8.00kg of water?
1. 5 answers
2. asked by maria
3. 1,563 views
A block of ice at 0°C whose mass initially is m = 48.4 kg slides along a horizontal surface, starting at a speed vo = 4.91 m/s
1. 1 answer
2. asked by anonymous
3. 1,556 views
Define secularism and describe the role of secularism in Native and non-Native interactions. How does secularism influence
1. 2 answers
2. asked by Anonymous
3. 1,531 views
you are making a scale drawing with a scale of 2 in =17ft. explain how you find the lenght of the drawing of an object that has
1. 3 answers
2. asked by Taylor
3. 1,509 views
What mystery number has 8 digits; none of the digits are the same. It is evenly divisible by 10. The value of one of the digits
1. 1 answer
2. asked by Adonis
3. 1,482 views
A liquid was analyzed to be 54.5% C, 9.10% H, and 36.4% O. An empty flask, whose mass was 45.32 g, when filled with the vapor of
1. 2 answers
2. asked by josh
3. 1,454 views
Select all statements that are true.(log_b$A$)/(log_b$B$)=log_b$A-B$ (If ) log_1.5$8$=x, text( then ) x**(1.5) =8.
1. 1 answer
2. asked by Randy
3. 1,451 views
if the red river is 500 miles longer than the blue river. if the sum of their lengths is 5550 miles what is the length of each
1. 1 answer
2. asked by DOn
3. 1,414 views
A diffraction pattern forms when light passes through a single slit. The wavelength of the light is 680 nm. Determine the angle
1. 1 answer
2. asked by linds
3. 1,400 views
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete
1. 2 answers
2. asked by John
3. 1,382 views
Radioactive radium () has a half-life of 1599 years. What percent of a given amount will remain after years?
1. 2 answers
2. asked by Pamela
3. 1,349 views
Jonathan is married, files a joint return, and has one child. During 2011, Jonathan has $85,000 of taxable income. He has
1. 0 answers
2. asked by Addy
3. 1,348 views
Sonya spent 3/8 of her money and then had $15.00 left. How much money did Sonya originally have?
1. 3 answers
2. asked by lily
3. 1,311 views
the ration 3:100 would properly be expressed in fraction form as
1. 3 answers
2. asked by Kim
3. 1,303 views
FIND THE LENGTH (IN CM) OF A PENDULUM WITH A PERIOD OF 1.20S.
1. 4 answers
2. asked by ~ALICE~
3. 1,286 views
Student ties 0.060kg lead fishing weight to the end of a piece of string and whirls it around in a horizontal circle.if the
1. 2 answers
2. asked by Sunshine
3. 1,281 views
Nico was stunned when he opened the mail. Here was a check for $322.50! This was the interest he earned on his investment. One
1. 3 answers
2. asked by Erica
3. 1,278 views
Suppose the weekly use of gasoline for motor travel by adults in North America is approximately normally distributed, with a
1. 0 answers
2. asked by Eliza
3. 1,271 views
The electron pairs in a molecule of NH3 form a tetrahedron. Why does the NH3 molecule have a trigonal pyramidal shape rather
1. 1 answer
2. asked by Britt
3. 1,242 views
Humans can hear sounds with frequencies up to about 20.0 kHz, but dogs can hear frequencies up to about 40.0 kHz. Dog whistles
1. 2 answers
2. asked by Romy
3. 1,225 views
Based on the balanced equation4Na + O2 → 2Na2O calculate the number of Na2O formula units formed when 60 Na atoms and 10 O2
1. 2 answers
2. asked by Lance
3. 1,206 views
the energy received by the earth from the sun is 1400w/m2. Assuming that the sun is a black body radiator and the ratio of the
1. 0 answers
2. asked by frank fred
3. 1,200 views
a bag of hershey miniatures candies contain 18 milk chocolates, 9 Mr.good bars, 9 krackel bars and 8 hershey dark chocolate. if
1. 2 answers
2. asked by Antonio
3. 1,198 views
a 200g tennis ball approaches a racket at 20m/s is in contact with the racket for 0.008s and the ball rebounds at 4m/s. find the
1. 1 answer
2. asked by sugin
3. 1,189 views
Abelardo wants to create several different 7-character screen names. He wants to use arrangements of the first 3 letters of his
1. 2 answers
2. asked by Tom
3. 1,165 views
If the sides of a square are increased by 3 cm, its area becomes 100 cm2. Find the length of the sides of the original square.
1. 1 answer
2. asked by Anonymous
3. 1,151 views
What was the cause of the peloponnesian War ?A.Greeks sought revenge for the Persian Wars. B.Sparta wanted control of the
1. 3 answers
2. asked by ciara
3. 1,146 views
what does eurocentric attitude means?
1. 2 answers
2. asked by kyle
3. 1,128 views
Identify an asset such as an airport or a shipping company within the global transportation system.What does this mean? What is
1. 5 answers
2. asked by chris
3. 1,115 views
a parallel plate capacitor, 10µF with air between its plate is connected to a 50 volt source and then disconnected.a)What is
1. 1 answer
2. asked by Bukola
3. 1,114 views
How many moles are in a 12.0 g sample of iron (II) oxide
1. 1 answer
2. asked by Yamilet
3. 1,105 views
FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths
1. 3 answers
2. asked by Drew
3. 1,099 views
What volume of nitrogen at 215 degress celcius and 715 mmHg would be required to react with .100 moles of hydrogen to produce
1. 0 answers
2. asked by Anonymous
3. 1,093 views
How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president
1. 1 answer
2. asked by Britt
3. 1,091 views
What volume of nitrogen at 215 degress celcius and 715 mmHg would be required to react with .100 moles of hydrogen to produce
1. 1 answer
2. asked by Anonymous
3. 1,090 views
Historical globalization & imperialism If my ancestors were not indigenous Canadians what 3 motives for imperialism would make
1. 1 answer
2. asked by kyle
3. 1,077 views
The human ear can detect sounds with frequencies between 20 Hz and 20kHz. Find the largest and smallest wavelengths the ear can
1. 2 answers
2. asked by Steve
3. 1,055 views
what lifestyle factors of the muscle affect the growth, development, size and/or healing (positively or negatively) of the
1. 0 answers
2. asked by James
3. 1,055 views
Contract the expressions. That is, use the properties of logarithms to write each expression as a single logarithm with a
1. 0 answers
2. asked by Randy
3. 1,040 views
Find the area of a regular hexagon with an apothem 10.4 yards long and a side 12 yards long.Please help
1. 1 answer
2. asked by kevin
3. 1,034 views
A 355-g piece of metal at 48.0 degree celsius is dropped into 111g of water at 15.0 degree celsius.If the final temperature of
1. 1 answer
2. asked by Sue
3. 1,021 views
this is what i flunked. SCIENCE for magnets and electricity!
1. 1 answer
2. asked by Celest
3. 1,020 views
Explain why the productivity standard for the distribution of income entails rewarding people based on their contribution to
1. 0 answers
2. asked by Anonymous
3. 1,019 views
a ball falls from a height of 2.4m and bounces from the same spot, each bounces rise to 3/5 the height of the preceeding bounce.
1. 1 answer
2. asked by jodi
3. 1,016 views
you are making a scale drawing with a scale of 2in.=17ft. elplain how you find the length of the drawing of an object that has
1. 3 answers
2. asked by Taylor
3. 1,012 views
Given that the specific heat capacities of ice and steam are 2.06 J/g degrees celsius, respectively, and considering the
1. 1 answer
2. asked by Rachael
3. 1,009 views
An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 14km/h .Precisely 2.50s after the speeder
1. 2 answers
2. asked by kelly
3. 1,008 views
You go to the video store to rent 5 movies for the weekend. Movies rent for $2 and $3. You spend $13. How many $2 movies did you
1. 7 answers
2. asked by Mishka
3. 1,002 views
FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths
1. 1 answer
2. asked by Justin
3. 989 views
A simple dartboard has three areas the main board has a radius of 9 inches there is a circle with a radius of 5 inches ans the
1. 1 answer
2. asked by Jeff
3. 988 views
At a political rally there are 20 republicians 13 democrates 6 independents. if a person is chosen at random what is the
1. 4 answers
2. asked by Antonio
3. 980 views
Find the number of decibels for the power of the sound. Round to the nearest decibel.A rock concert, 5.21 multiplied by 10-6
1. 1 answer
2. asked by Randy
3. 979 views
(a) Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of ln(x) in your answer.)lo
1. 0 answers
2. asked by Randy
3. 974 views
The Greek God Zeus ordered his blacksmith Hephaestus to create a perpetual water-making machine to fill Zeus' mighty chalice.
1. 0 answers
2. asked by Randy
3. 972 views
How much heat is required to raise by 10.30°C the temperature of 1.2 kg of water?How much heat is required to raise by 10.30°C
1. 2 answers
2. asked by Alex
3. 971 views
How many different integer values of n satisfy the inequality 1/13 < 2/n < 1/10?F. 1 G. 2 H. 3 J. 4 K. 5
1. 1 answer
2. asked by Derek
3. 965 views
an electron has a kinetic energy that is 1.8 times its rest energy. What is its speed, expressed as a fraction of the speed of
1. 1 answer
2. asked by Monique
3. 959 views
Lithium metal decomposes in water and releases hydrogen gas. if 275 ml of hydrogen gas is produced at stp. what is the mass of
1. 2 answers
2. asked by Ana g
3. 956 views
Which of the following compounds is insoluble?Question 4 options: A) Ca(NO3)2 B) FePO4 C) NH4OH D) Na2SO4 E) NaCl
1. 2 answers
2. asked by Sirena
3. 939 views
Granite age for Scottish highlands
1. 1 answer
2. asked by Jess
3. 928 views
12. Is the figure below a right triangle? On the lines below, explain how you determined your answer.Answer - The figure below
1. 3 answers
2. asked by Laruen
3. 921 views
Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete
1. 0 answers
2. asked by John
3. 914 views
whaat are some genetic variations of the occipital lobe?
1. 1 answer
2. asked by Nicole
3. 909 views
Given that the specific heat capacities of ice and steam are 2.06 J/g degrees celsius and 2.03 J/g degrees celsius,
1. 1 answer
2. asked by Anonymous
3. 907 views

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