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Questions (551)

What is the pH if the hydrogen-ion concentration is 6.8 x 10^-7 M?
1. 1 answer
2. 918 views
Calculate the hydrogen-ion concentration [H+] for an aqueous solution in which [OH-] is 1 x 10^-11 mol/L. Is this solution
1. 1 answer
2. 2,463 views
Calculate the concentration of a silver ion when the solubility product constant of AgI is 10^-16
1. 2 answers
2. 1,904 views
What is the equilibrium constant for the following reaction?3A + 2B <---> 2C
1. 1 answer
2. 1,764 views
A 55.0-g piece of copper wire is heated, and the temperature of the wire changes from 19 degrees C to 86 degrees C. The amount
1. 1 answer
2. 1,697 views
Describe the parts of a calorimeter and the function of each part.
1. 1 answer
2. 1,144 views
Which of the following usually makes a substance dissolve faster in a solvent?A: lowering the temperature B: decreasing the
1. 1 answer
2. 1,769 views
If a crystal added to an aqueous solution causes many particles to come out of the solution, the original solution was___?A:
1. 1 answer
2. 1,152 views
A 10-g mass of krypton occupies 15.0 L at a pressure of 210 kPa. Find the volume of the krypton when the pressure is increased
1. 2 answers
2. 3,360 views
Explain what a saturated solution is. Give a specific example.
1. 1 answer
2. 427 views
Describe the structure of the water molecule and indicate how this structure is responsible for many of the unique properties of
1. 1 answer
2. 966 views
A mixture of gases at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2 is 24 kPa and the
1. 6 answers
2. 1,597 views
A rigid container of O2 has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273 K?
1. 2 answers
2. 1,595 views
The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming
1. 2 answers
2. 1,793 views
A crude oil burned in electrical generating plants contains about 1.2 % sulfur by mass. When the oil burns, the sulfur forms
1. 4 answers
2. 2,048 views
Now "react" methane (CH4) with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). Start with one molecule of methane
1. 1 answer
2. 1,320 views
36 colored paper clips (12 each of 3 different colors)1.Each paper clip represents a single atom. Designate a different color of
1. 1 answer
2. 1,180 views
Analyzing Information Discuss the benefits and problems associated with multinational corporations establishing production
1. 3 answers
2. 890 views
an arresting device on a carrier deck stops an airplane in 1.5s. the avg. acceleration was 49 m/s2. what was the stopping
1. 2 answers
2. 1,149 views
"The united states in congress assembled shall never engage in war...nor coin money,nor regulate the value thereof, nor [spend]
1. 1 answer
2. 1,105 views
what is the protective sheild covering what segment of the thorax? its in grasshopper dissection
1. 0 answers
2. 278 views
Why do behavioral choices affect an adolescence health?
1. 1 answer
2. 413 views
How does using apporpriate strategies when dealing with difficult situations as an adolescence affect a healthy lifestysle?
1. 1 answer
2. 441 views
what is the purpose of a fairy tale motiff?
1. 1 answer
2. 395 views
visions shadow by simon ortiz what are the concerns for the environment, love of nature, or the symbol of the eagle.
1. 1 answer
2. 429 views
what are the parts of a sunflower i need the pic with the big words
1. 1 answer
2. 343 views
what are the parts of a sunflower ...i need the picture with the big words
1. 3 answers
2. 924 views
Do you believe that humans can harvest forest resources in an environmentally friendly way? or should national forests be left
1. 5 answers
2. 1,145 views
what is a graphic organizer
1. 1 answer
2. 934 views
What is the difference between an equation with two variables and an equation with three variables?
1. 4 answers
2. 443 views
Which label describes the following?3x +6 =10 A). Expression B). Linear equation C). Equation which is not linear
1. 1 answer
2. 482 views
Which label describes the following?3x +6 =10
1. 1 answer
2. 366 views
I need to know how calicum is made and is it a combined element? I can't find info anywhere.Please help! Thank you!
1. 0 answers
2. 413 views
what are the subunits of starch
1. 2 answers
2. 702 views
hi i need to know how to do this onethanks Find the solution to yx + x + (dy/dx) = 0 ; y(9) = -9 y = ???? Does this separate the
1. 0 answers
2. 445 views
use the quadratic formula to solve this equation.4x^2-8x+3=5 use the formula x=-b + or - the sqrt of b^2-4ac/2a yes, the 2a
1. 0 answers
2. 525 views
x^2-9x-4=6solve by completing the square show steps plz :D Add 4 to both sides. What is 1/2 of -9? Then square that, and add it
1. 0 answers
2. 804 views
• Give an example of how each of the following management structures affects the day-to-day work of an organization.1.
1. 0 answers
2. 550 views
True or False:1. A subway breakdown at rush hour can rejuvenate hundreds of commuters 2. In the 19th century, workers were
1. 0 answers
2. 588 views
unscrabbleviglin tuuref http://www.ssynth.co.uk/~/anagram.html http://wordsmith.org/anagram/ http://www.unscramble.net
1. 0 answers
2. 1,117 views
how do you change the fraction 8/35 to a percent?please try to help. thanks You would put 8 divided by 35 into your calculator,
1. 0 answers
2. 786 views
_5x__ + _20__x+4 4+x change the second denominator ot x+4 Now, they have the same denominators.. (5)(x+4)/(x+4) or 5 check this.
1. 0 answers
2. 396 views
simplify the expression. Use only positive exponents.8x^2y^-2/x^-2y * (4xy^2)^-1/x^2y Something does not seem right in your
1. 0 answers
2. 664 views
what is 80% of 5?4 4
1. 0 answers
2. 327 views
how did the 1877 Haymarket strike cause the public to resent the labor movement?http://en.wikipedia.org/wiki/Haymarket_Riot
1. 0 answers
2. 604 views
why did the south industrilize more slowly than the north?The south had fertile farmland that produced abundant crops. It also
1. 0 answers
2. 473 views
How do you convert miles per minute into minutes per miles??Help me please! invert. 30miles/min convets to 1min/30miles
1. 0 answers
2. 433 views
christmas will come in december:Probability:100%
1. 0 answers
2. 384 views
how can you tell which form of a rational number is most appropriate in a given situation?Use an integer, or fraction, NEVER a
1. 0 answers
2. 542 views
how can you tell which form of a ational number is most appropriate in a given situation?
1. 0 answers
2. 346 views
what r the laws and punishment for each laws in Japan ?If you want to knoow about Japanese laws, this is a very broad subject.
1. 0 answers
2. 650 views

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