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A mixture of the compounds magnesium oxide and calcium sulfide contains 21.6999 g of magnesium oxide and is 51.3 % by mass
1. 1 answer
2. 696 views
A mixture of the compounds sodium oxide and magnesium chloride contains 2.4182 g of sodium oxide and is 89.3 % by mass magnesium
1. 2 answers
2. 564 views
All Collective nouns?festival family flock crowd parties army village company gallery
1. 2 answers
2. 405 views
We have to find 20 collective nouns in a magazine. So far are all of these collective?1.partners 2.Birds 3.Family 4.Amphibians
1. 9 answers
2. 631 views
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.15 m/s at an angle of
1. 1 answer
2. 792 views
In what city did Rosa Parks defy the rules of segregation?
1. 1 answer
2. 1,115 views
A bag contains 5 slips of paper. On each slip is written the name of a member of the Avila family--Mr.Avila,Mrs.Avila,their
1. 1 answer
2. 524 views
A bag contains 5 slips of paper. On each slip is written the name of a member of the Avila family--Mr.Avila,Mrs.Avila,their
1. 1 answer
2. 473 views
The largest island in the world, locates near Canda is called______.I think it's Greenland
1. 3 answers
2. 1,087 views
Boiling occurs when?
1. 1 answer
2. 333 views
Carbon tetrachloride CCl4 contains carbon (EN = 2.5) and chloride (EN = 3.0). Because of this, CCl4 is:
1. 1 answer
2. 584 views
2. Segment RT is the midsegment of the trapezoid. Find x.
1. 0 answers
2. 539 views
Calculate the molar heat of neutralization in kj/mol of the reaction between HA and BOH given the following information:The
1. 1 answer
2. 2,438 views
Assume a piece of hot metal is added to a calorimeter containing 50mL of water at 22C. The amount of heat released by the metal
1. 4 answers
2. 1,211 views
Calculate the calorimeter constant if 25g of water at 50C was added to 25g of water at 25C with a resulting temperature of 35C?T
1. 1 answer
2. 1,546 views
Assume a piece of hot metal is added to a calorimeter containing 50mL of water at 22C. The amount of heat released by the metal
1. 1 answer
2. 2,133 views
Assume the heat absorbed by the calorimeter was 200J. What is the calorimeter constant (Heat Capacity) if the temperature
1. 2 answers
2. 1,704 views
For each of the following pairs of elements, state whether the binary compound formed is likely to be ionic or covalent. Give
1. 2 answers
2. 1,928 views
(a) A sample of cesium metal reacted completely with water, evolving 48.7 mL of dry H2 at 24°C and 774 mmHg. What is the
1. 2 answers
2. 629 views
A neutral molecule is identified as a tetrafluoride, XF4, where X is an unknown atom. If the molecule has a dipole moment of
1. 2 answers
2. 1,629 views
The term degeneracy means the number of different quantum states of an atom or molecule having the same energy. For example, the
1. 2 answers
2. 514 views
A particular microwave oven delivers 800 watts. (A watt is a unit of power, which is the joules of energy delivered, or used,
1. 2 answers
2. 1,364 views
A sample of cesium metal reacted completely with water, evolving 48.7 mL of dry H2 at 24°C and 774 mmHg. What is the equation
1. 1 answer
2. 631 views
At what speed must an electron travel to have a wavelength of 13.6 pm? I got 9.89x10^-15 m/s as the answer and its wrong where
1. 1 answer
2. 433 views
At what speed must a neutron travel to have a wavelength of 9.2 pm?
1. 6 answers
2. 684 views
What is the energy of a photon corresponding to radio waves of frequency 1.475 106 /s? I got 9.77e-28 as an answer and its wrong
1. 2 answers
2. 659 views
At what speed must an electron travel to have a wavelength of 13.6 pm? I got 9.89x10^-15 as the answer and its wrong where did I
1. 1 answer
2. 512 views
What is the wavelength of the electromagnetic radiation emitted from a hydrogen atom when the electron undergoes the transition
1. 2 answers
2. 1,471 views
Any object, be it a space satellite or a molecule, must attain an initial upward velocity of at least 11.2 km/s in order to
1. 1 answer
2. 532 views
A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the
1. 1 answer
2. 4,670 views
The specific heat of copper metal was determined by putting a piece of the metal weighing 39.4 g in hot water. The quantity of
1. 2 answers
2. 682 views
(a) A 102-g sample of water is placed in an insulated container and allowed to come to room temperature at 21°C. To heat the
1. 1 answer
2. 993 views
Propane, C3H8, is a common fuel gas. Use the following to calculate the grams of propane you would need to provide 383 kJ of
1. 1 answer
2. 4,921 views
Suppose you mix 20.1 g of water at 66.2°C with 45.1 g of water at 35.7°C in an insulated cup. What is the maximum temperature
1. 2 answers
2. 461 views
When ice at 0°C melts to liquid water at 0°C, it absorbs 0.334 kJ of heat per gram. Suppose the heat needed to melt 30.7 g of
1. 1 answer
2. 1,769 views
How much heat is released when a mixture containing 12.6 g CS2 and 13.2 g Cl2 reacts by the following equation?CS2(g) + 3 Cl2(g)
1. 0 answers
2. 656 views
A 19.5-g sample of a metal was heated to 61.67°C. When the metal was placed into 27.1 g of water in a calorimeter, the
1. 0 answers
2. 563 views
Hydrogen is burned in oxygen to release heat. How many grams of hydrogen gas must be burned to release enough heat to warm a
1. 1 answer
2. 1,219 views
Nitrous oxide, N2O, has been used as a dental anesthetic. Suppose that the average speed of an N2O molecule at 25°C is 377 m/s.
1. 1 answer
2. 1,315 views
Any object, be it a space satellite or a molecule, must attain an initial upward velocity of at least 11.2 km/s in order to
1. 2 answers
2. 708 views
you have16 coins that are heads up an18 coins that are tails up. After you add some coins that are tails up, the ratio of heads
1. 1 answer
2. 488 views
Please help with solving this5r(6rs-12st)t
1. 1 answer
2. 1,120 views
A 26 loudspeaker is suspended 3.0 below the ceiling by two cables that are each 40 from vertical.What is the tension in the
1. 0 answers
2. 718 views
A banked circular highway curve is designed for traffic moving at 60 km/h. The radius of the curve is 207 m. Traffic is moving
1. 0 answers
2. 768 views
another name and cause of hyperthyroidism
1. 1 answer
2. 387 views
How much cash must be deposited in a savings account In Order To Accumulate 50,000 At End Of 7 Years With 12 % Interest Rate?
1. 2 answers
2. 470 views
solve for x10000 = 2500(1.0425)^3 + X(1.0425)^2 + 3500(1.0425)^
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2. 378 views
Solve for x.10000 = 2500(1.0425)^3 + X(1.0425)^2 + 3500(1.0425)^1
1. 1 answer
2. 484 views
x + 2y = 4 and x - 4y = 8, solve for x
1. 1 answer
2. 457 views
A firm has ROA of 14% and a debt/equity ratio of 0.8. The ffirms ROE is?
1. 0 answers
2. 924 views
Assume Williams inc has:Debt ratio= 40% Net profit margin= 10% Return on assets = 25% Find williams Total Asste Turnover Ratio
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2. 488 views
To stop a car, first you require a certain reaction time to begin braking. Then the car slows down at a constant rate. Suppose
1. 1 answer
2. 691 views
What was the function of the egyptian funerary complex?
1. 1 answer
2. 459 views
Adding Doubles just means adding the same numberr to itself. Like 2+2=4, 3+3=6, So addind doubles to 18 would be 0+0=0, 1+1=2,
1. 3 answers
2. 560 views
http://images.google.com/images?as_q=&hl=en&gbv=2&output=images&svnum=10&btnG=Google+Search&as_epq=homogeneous+mixture&as_oq=&as
1. 0 answers
2. 987 views
http://en.wikipedia.org/wiki/African_American#Total_African_American_populationhow many african americans live today.
1. 5 answers
2. 517 views
CAN SOMEONE FIND ME A TIME LINE ABOUT AVI? (Avi is a famous writer)THANk YOU!! HAPPY SB07 You should be able to construct a
1. 0 answers
2. 531 views
The word step is misleading.http://biology.about.com/library/bltranslation.htm How many steps are there in translation? I've
1. 0 answers
2. 668 views
http://en.wikipedia.org/wiki/CyanobacteriaScroll to photosynthesis and read. Then think about how most plants and algae use
1. 0 answers
2. 538 views
http://www.google.com/search?as_q=volcanoes+&hl=en&num=10&btnG=Google+Search&as_epq=ring+of+fire&as_oq=&as_eq=&lr=&as_ft=i&as_fi
1. 0 answers
2. 788 views
We don't just answer questions here. We help. So at least tell us your best thought out answer and why you chose it. Then we'll
1. 1 answer
2. 1,581 views
http://en.wikipedia.org/wiki/Arctic_Circlewhat is the artic circle? what is the line of cancer and capricorn?
1. 0 answers
2. 521 views
http://momo.essortment.com/versaillestrea_reif.htmhttp://en.wikipedia.org/wiki/Treaty_of_Versailles
1. 0 answers
2. 631 views
non-volatile means a liquid that won't evaporate at all. It's not a commomly encountered term because there is usually some
1. 0 answers
2. 675 views
Look at the picture on the immediate left here:http://en.wikipedia.org/wiki/Earth's_magnetic_field Also:
1. 1 answer
2. 576 views
http://en.wikipedia.org/wiki/Alternation_of_generationswhy does life cycle of moss involve alternation of generation?
1. 0 answers
2. 529 views
Where can i find drawing of electron dot stuctures for compounds like BR2 and HCNHCN is at the link below.
1. 0 answers
2. 796 views
http://www.nd.edu/~rbarger/www7/http://historyeducationinfo.com/
1. 0 answers
2. 413 views
There is a lot on this at:http://fig.cox.miami.edu/~cmallery/150/life/top_10_life.htm Make sure and go all the way to the bottom
1. 0 answers
2. 549 views
Below is the original question and emailed response from my friend, Dr Ford, a theoretical physicist at Tufts University in
1. 0 answers
2. 1,113 views
http://en.wikipedia.org/wiki/Melting_pointQuestion: A solid substance has a vapor pressure of 100 mmHg at the melting point
1. 0 answers
2. 1,135 views
Give us the figures.Density is equal to mass over volume. D= M --- V To get mass you weigh the object. To get volume you either
1. 0 answers
2. 704 views
Please don't do that again or you will be banned from this forum.Your question is pretty vague. What observation table are you
1. 0 answers
2. 755 views
What characterizes the electron configurations of transition metals such as silver and iron?Thanks Alot in Advance.. Fe is in
1. 0 answers
2. 1,322 views
http://en.wikipedia.org/wiki/Protostarhttp://www.google.com/search?as_q=&num=10&hl=en&btnG=Google+Search&as_epq=stellar+evolutio
1. 1 answer
2. 596 views
http://classweb.gmu.edu/biologyresources/writingguide/ScientificPaper.htmWhat are the steps of the scientific method? I think
1. 2 answers
2. 1,142 views
By movement I'm guessing you mean dispersal? Otherwise fungi don't move much.Try here:
1. 1 answer
2. 685 views
catalyst: a substance that changes the speed of a chemical reaction without affecting the yield or undergoing permanent chemical
1. 1 answer
2. 1,523 views
According to Webster's not much. I'd say they were synonyms.Shoal: a large group or number : CROWD <a shoal of fish> School: a
1. 0 answers
2. 808 views
When a second post is made to a question, the most recent is now at the bottom. Do any of you prefer the way it was, or do you
1. 1 answer
2. 1,578 views

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