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Questions (977)
John has three bottle of mineral acid but does not know which is which since he did not label the bottles before filling them.
1 answer
562 views
Convert these unlike fractions to equivalent like fractions and add them. You must use the LCD to get the answer correct. If
3 answers
1,842 views
-9 is a member of which subset of real numbers
1 answer
518 views
Please read for errors and correct them.
Thank you for your request for a credit card with our store. Before we can issue you a
3 answers
668 views
This morning you purchased a stock that will pay an annual dividend of 1.90 per share next year. You require a 12 percent rate
2 answers
780 views
I have to edit these. Add any words needed for grammatical or logical completeness
1. Very few black doctors were allowed to
2 answers
1,313 views
Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an
0 answers
860 views
Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are
1 answer
541 views
i cant remember how to find the value of the squareroot of 484. can anyone give me some steps or something.
1 answer
374 views
i cant remember how to find the value of the squareroot of
2 answers
453 views
-5 Is A Member Of Which Subset Of Real Numbers.
a) natural numbers b) whole numbers c) intergers d) rational numbers e)
4 answers
3,225 views
graph triangle rst with vertices r(-1,3),s(4,-2), t(2,-5)
Draw the image triangle r's't' formed by rotating triangle rst 90
1 answer
1,396 views
which set is infinite?
P = {positive numbers less than 60} Q = {whole numbers between 10 and 20} R = {intergers ge=reater than
1 answer
479 views
Consider the resonant frequencies of a 1.78 m tube closed at one end at 24°C.
a) Lowest resonant frequency = Hz HELP: You know
1 answer
696 views
Ultrasound reflected from an oncoming bloodstream that is moving at 30 cm/s is mixed with the original frequency of 1.3 MHz to
0 answers
858 views
Analyze x²-6x-5y=1. Determine the vertex, focus, directrix, intercepts, axis of symmetry, and at least 2 other points on the
2 answers
1,494 views
A large number of samples of size ‘n’ are selected from a population and the mean of each sample is determined. What can be
1 answer
553 views
A cooling fan is turned off when it is running at 920 rev/min. It turns 1100 revolutions before it comes to a stop. What was the
0 answers
892 views
Please help!
x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of equations using Gaussian Elimination or Gauss-Jordan
1 answer
1,037 views
how can i get a better gradfe wen i cant remember all the stuff only bits and pieces
1 answer
357 views
4/5+8/15=
1 answer
227 views
7+(v+w)
1 answer
248 views
12;8t=96
1 answer
271 views
How long was Romeo and Juliet married before the prince exiled Romeo?
1 answer
469 views
How long was Romeo and Juliet married be4 the prince exiled Romeo?
1 answer
673 views
i also have problems studying and understanding social studies. i don't know what to do my grades are way low. can you please
4 answers
767 views
THANK YOU lol thank you very much i now understand wat shes sayin myteacher don't really get it either lol wen i asked him in
4 answers
821 views
Where juliet says: "O romeo, romeo!Wherefore art thou Romeo?
Deny thy father and refuse thy name; Or if thou wilt not,be sworn my
3 answers
1,005 views
How do you calculate the energy needed to heat 4 kg of water from 25oC to 45oC?
1 answer
922 views
What is the enthalpy for the following reaction?
overall: C2H4+H2O--->C2H5OH is -1411kJ correct??
6 answers
10,670 views
A 455-g chunk of iron is removed from an oven and plunged into 385g water in an insulated container. The temperature of the
2 answers
859 views
I'm soo confused on how to solve this prboblem.
x+5/8x-3 = 11/2
2 answers
441 views
(x-6)^2=1? Give exact and approximate solutions to three decimal places
1 answer
527 views
why is the surface area of a cube not the derivative of a volume?
3 answers
470 views
Consider an inefficient engine which draws 200 J of heat from a hot reservoir at 100oC, converts 48 J to work, and rejects 152 J
2 answers
598 views
One gram of water is placed in a cylinder and the pressure is maintained at 2.0 x 105 Pa. The temperature of the water is raised
1 answer
970 views
Consider an inefficient engine which draws 200 J of heat from a hot reservoir at 100oC, converts 48 J to work, and rejects 152 J
0 answers
525 views
Consider an inefficient engine which draws 200 J of heat from a hot reservoir at 100oC, converts 48 J to work, and rejects 152 J
1 answer
728 views
One gram of water is placed in a cylinder and the pressure is maintained at 2.0 x 105 Pa. The temperature of the water is raised
0 answers
779 views
One gram of water is placed in a cylinder and the pressure is maintained at 2.0 x 105 Pa. The temperature of the water is raised
0 answers
537 views
Consider an inefficient engine which draws 200 J of heat from a hot reservoir at 100oC, converts 48 J to work, and rejects 152 J
1 answer
579 views
Sorry!
HEPES, is a commonly used component of physiological buffers. The PKa of the protonated amino group of HEPES is 7.55 at
2 answers
1,064 views
HEPES, is a commonly used component of physiological buffers. The PKa of the protonated amino group of HEPES is 7.55 at 25C.
Desc
2 answers
761 views
I'm completely confused on how to solve this problem.
Convert 125 hp-hr/long ton to kW-s/kg.
0 answers
449 views
I'm completely confused on how to solve this problem.
Convert 125 hp-hr/long ton to kW-s/kg.
0 answers
507 views
Write the equation of the function that has a graph the shape of y=/x/ ,reflected about the x-axis and shifted down 1 unit.
2 answers
725 views
Factor: 9x^2 - 42x + 49
So far I have 3(3x^2 - 14x + ) I have no idea if this is right or if this equation is prime. Or if I'm
3 answers
577 views
For which value of x is the inequality 2x > 6 true?
Is it: 0, 1, 2, 3 or 4
2 answers
2,543 views
The R-group of histidine is a weak base with a pKb of 6.0. Calculate the percent ionization at pH 7.4.
What is the net charge of
0 answers
1,012 views
which of the following expressions shows the equation to use in the finding the dimensions of a cube N by N by N with a volume
1 answer
3,081 views
There are a number of ways that emotional or psychological problems can develop in children. Problems can result from anything
1 answer
1,233 views
During an emergency room examination for an injured arm, the physician palpates the arm's entire lengh, starting at the shoulder
1 answer
426 views
How has the control mechanisms impacted the four functions of management in the Coca Cola Corporation?
0 answers
498 views
Solubility of a solute X is 20 g / 100 g of water at 450C and 10 g / 100 g of
water at 250C. What happens when a solution of 15 g
1 answer
437 views
Why is ∆H hydration a negative quantity for ionic compounds?
1 answer
471 views
Consider two beakers, one with water and other one with sodium chloride solution. Which of these will have higher vapor pressure
1 answer
408 views
Tomlinson, in Cultural Imperialism: a Critical Introduction, London: Pinter Publishers, 1991, suggests that certain dominant
1 answer
554 views
What is the relationship between ethics and the law? Can an action be unethical but not illegal? If so, explain how and give an
1 answer
472 views
can someone give me a list of 4 year colleges that teach criminology or criminal justice
2 answers
564 views
My 8th grader is doing some research for a 4-H project and needs to know how drugs affect the family and friends of a drug
0 answers
521 views
Need help people making a resume for hw assignment!!?
okay so I'm in 9th grade and have life skills .we have to make our own
0 answers
627 views
what is an example of gross primary productivity of community
0 answers
440 views
what is an example of biodiversity
0 answers
348 views
How many moles of electrons are required to produce 23.8 g Cu from a CuSO4 solution?
1 answer
670 views
What are good forensic questions i can ask a detective?
name a couple please :)
5 answers
639 views
..... Amy finished 6/12 of the problems on her timed test. Jackson finished 4/6 ... the timed test. Did they finish the same
1 answer
542 views
What is meant by defy convention? The two definitions do not make any sense together.
1 answer
403 views
The molarity of Sr2+ in a saturated solution of SrSO4 was determined to be 0.000500 M. Calculate the solubility product constant
1 answer
1,028 views
How do you do this problem because i feel like i did it wrong
(3�ã2 + 4)^2 (3�ã2 + 4)(3�ã2 + 4) 9�ã4 + 12�ã2 + 12�ã2
2 answers
463 views
Has any one of you ever been criticized at a point in your life? If you have then how has it felt? Do you take criticism to be
3 answers
398 views
if q>0, how can u use the graph of y
=sin theta to draw the graph of y =sin theta +q?
1 answer
406 views
What tool did the ancient China people use to try to communicate with the dead?
1 answer
476 views
The value of the equilibrium constant, Kc, at a certain temperature is 4.20 x 10-2. Would the reaction as represented by the
1 answer
622 views
Calculate the value of the equilibrium constant (Kc) for the reaction displayed if the following equilibrium concentration data
1 answer
595 views
The initial concentration for the compounds involved in the reaction displayed were determined to be [BrI(g)] = 0.3220 mol/L,
0 answers
508 views
A 893 g sample of a solution of the solute (CH3)2CO in the solvent C4H8O that has a concentration of 28.6 pph(parts per hundred)
1 answer
620 views
Solutions are made that contain 0.1 moles of each of the following compounds below in 100 g of H2O. Choose the compound whose
1 answer
2,661 views
Select all cases in which the units comprising the solid are best classified as molecules.
CrSe C2H2 CS2 C2H4 Cs2S Cl2O7 None
2 answers
1,107 views
Select all substances with an acceptor atom that can hydrogen bond to a hydrogen atom that is part of a polar covalent bond.
I2
1 answer
653 views
Select all cases in which the units comprising the solid are best classified as individual atoms.
C5H12 C3H6(propene) KBrO3 C3H8
0 answers
518 views
Identify all substances that can be classified as an atomic solid.
SeF6 C2H4O2 H2C2O4 S8 Ru La2(SO4)3 None
0 answers
399 views
Select all cases where the substance shown has a molecular dipole.
CHF3 fluoroform H2NCH2CH2OH ethanolamine CF3CF3
0 answers
604 views
Identify all substances that can be classified as a molecular solid.
Rn Zn(BrO3)2 TlNO3 La C2F4 C2F6 None
0 answers
392 views
Identify all substances that can be classified as a network solid.
SiCl4 Zr Fe2(SO4)3 SiH4 Co(NO3)2 Y None
0 answers
416 views
Select all cases in which the units comprising the solid are best classified as molecules.
ScBr3 Fe IF H2S IF5 Kr None
1 answer
1,002 views
A bin contains 8 blue chips, 5 red chips, 6 green chips, and 2 yellow chips.
Question: drawing a red chip, replacing it, then
4 answers
1,433 views
At the distance of the earth from the sun the pressure exerted by sunlight is avout 10^-5 Pa How much force does this pressure
5 answers
629 views
At the distance of the earth from the sun the pressure exerted by sunlight is avout 10^-5 Pa How much force does this pressure
3 answers
1,053 views
Which value of Ke
2 answers
378 views
What is the ÄG for Hydroden Peroxide liquid?
Its not in my textbook.
0 answers
715 views
What constitutes a middle class family?
1 answer
1,098 views
Should youths who have been convicted of violent crimes be subject to the death penalty? Why or why not?
1 answer
466 views
A propeller spins at 1880 rev/min.
the equals 197 rads/sec b. What is the angular displacement of the propeller in 2.50 s ?
1 answer
6,587 views
An aqueous antifreeze is 40.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.05 g/cm3. Calculate the
2 answers
2,724 views
what pressure would have to be applied to steam at 350.degress C to condense the steam to liquid water (Hvap=40.7kJ/mol)
1 answer
1,048 views
The perimeter of an equlateral triangle is 45 inches. A rectangle whose width is 1/3 its length has a perimeter of 48 inches.
1 answer
828 views
A mineral crystallizes in a cubic closest packed array of oxygen ions with aluminum ions in some of the octahedral holes and
0 answers
775 views
An asteroid revolves around the Sun with a mean orbital radius twice that of Earth's. Predict the period of the asteroid in
1 answer
1,851 views
Help:Please change show me anthing that I need to do, by placing the correct form at the it the bottom of the essay.
Topic: What
2 answers
647 views
Help:Please change show me anthing that I need to do, by placing the correct form at the it the bottom of the essay.
Topic: What
3 answers
643 views
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