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Kat

Questions (324)

Which of the following reactions are spontaneous (favorable)?A] 2Mg(s) + O2(g) -> 2MgO(s) Delta G = -1137 kJ/mol .. B] NH3(g) +
1. 6 answers
2. 10,247 views
An equilibrium mixture of PCl5(g), PCl3(g), and Cl2(g) has a partial pressure of 217.0 torr, 13.2 torr, and 13.2 torr,
1. 5 answers
2. 1,945 views
6) A sub has a volume of 20 m3 and a density of 1500 kg/m3. It sinks to a depth of 40 meters. The density of sea water is 1025
1. 0 answers
2. 486 views
How do I talk about fear in french?The activity is to introduce ourselves (what we like, don't like, find interesting, want to
1. 5 answers
2. 566 views
Define posterior and anterior
1. 1 answer
2. 591 views
A 8.7 kg block is on a frictionless surface. It is connected by a string over a pulley to a 8.6 kg hanging mass. Find the
1. 0 answers
2. 380 views
James sold magazine subscriptions with three prices: $26, $19, $ 23. He sold 3 fewer of the $26 subscriptions than of the $19
1. 1 answer
2. 1,305 views
James sold magazine subscriptions with three prices: $26, $19, $ 23. He sold 3 fewer of the $26 subscriptions than of the $19
1. 1 answer
2. 707 views
Computelim √(3-s)-√(3+s))/s s→0⁡
1. 1 answer
2. 349 views
you invest $10,000 in a savings account that pays 6.6%, compounded quarterly for 15 years. How much money is in the account in
1. 1 answer
2. 529 views
Please help me solve this!!!!4*(3-x)^4/3 - 5 = 59 (4/3 is an exponent) I got to this far... (3-x)^4/3 = 16 But how do I get rid
1. 1 answer
2. 648 views
Write the number in the form a+bisqrt(-4) + 10 ????? Please help!
1. 1 answer
2. 569 views
Suppose that y varies directly with x and inversely with zy=25 when x=35, and z=7. Write the equation that models the
1. 1 answer
2. 939 views
How do I solve this?125x^3 + 343 = 0 Please help me!
1. 3 answers
2. 780 views
the reaction is CO + SO3 <=> CO2 + SO2, the rate law for this reaction is rate=k[SO3] and the mechanism isSO3 -> SO2 + O CO + O
1. 0 answers
2. 823 views
The ksp of aluminum hydroxide is 5.6e-17. What is the concentration of hydroxide in a saturated solution?For the answer I got
1. 3 answers
2. 665 views
The question is "the reaction CO + SO3 <=> CO2 + SO2 has two possible mechanisms. If the rate law for this reaction is
1. 1 answer
2. 704 views
What happens to the rate of a reaction if the temperature is decreased and why?
1. 1 answer
2. 423 views
The ksp of aluminum hydroxide is 5.6e-17. What is the concentration of hydroxide in a saturated solution?
1. 1 answer
2. 516 views
2 L(g) + An(aq) + 3 Gw(s) + 2 I(g) <=> 2 Gd(aq) + 3 A(g) + Y(s)What direction would the reaction shift if the volume of the
1. 1 answer
2. 594 views
I have to Write several sentences describing a recent interaction with a friend or family member about personal finance or
1. 1 answer
2. 506 views
In plain words, can you tell me the difference between reciprocal interactionism and mechanistic interactionism? I am just not
1. 1 answer
2. 493 views
NH4HS(s) reverse reaction arrow NH3(g) + H2S(g)Using Le Chatelier's principle, explain how increasing the temperature would
1. 1 answer
2. 745 views
The reaction O2 ⇄ 2 O has a K=1.2x10-10. If a 1.7 L container holds 3.8 molesof O atoms (and nothing else), what will the
1. 1 answer
2. 589 views
The reaction O2 ⇄ 2 O has a K=1.2x10-10. If a 1.7 L container holds 3.8 molesof O atoms (and nothing else), what will the
1. 0 answers
2. 1,046 views
2 Ch(aq) + Em(aq) + Is(s) + T(g) ⇄ Ry(aq) + 3 Ro(s) + 4 X(g) ΔHrxn=35.6 kJ/molName three things that you could do to make the
1. 1 answer
2. 690 views
Cyclohexane, C6H12, a hydrocarbon, can isomerize or change into methylcyclopentane, a compound of the same formula (C5H9CH3) but
1. 2 answers
2. 2,711 views
Zinc carbonate, ZnCO3(s), dissolves in water to give a solution that is 1.7 multiplied by 10-5 M at 22°C. Calculate Ksp for
1. 2 answers
2. 3,015 views
Kp for the following reaction is 0.16 at 25°C.2 NOBr(g) (reverse reaction arrow-> <-) 2 NO(g) + Br2(g) What happens when you
1. 1 answer
2. 618 views
How is Surface catalyst(heterogeneous) and homogeneous catalyst different? I'm in 10th grade chemistry and I don't understand
1. 2 answers
2. 586 views
2 NO(g) + 2 H2(g) --> N2(g) + 2 H2O(g)Reactant Concentration(mol/L) and Rate of Appearance of N2 [NO] [H2] (mol/L·s) 0.420
1. 1 answer
2. 561 views
H2PO4-(aq)+OH-(aq) -> HPO42-(aq)+H2OExperiment/[H2PO4-](M)/[OH-](M)/ Initial Rate(mol/L·min) 1 0.0031 0.00041 0.0021 2 0.0031
1. 1 answer
2. 1,045 views
Jess makes 5/8 free throws how many will she make if she takes 720 tries
1. 1 answer
2. 343 views
The surface area of a rectangular prism is 10.4 in2. What is the surface area of a similar prism that is larger by a scale
1. 1 answer
2. 1,365 views
What are some negative impact of technology?
1. 1 answer
2. 380 views
Volume 3 1Abstract Medication errors are a significant issue affecting patient safety and costs in hospitals often posing
1. 0 answers
2. 700 views
Two rectangles are similar and the ratio of their sides is 1: 4. Find the ratio of their perimeters??? Find the ratio of their
1. 0 answers
2. 646 views
Hello, i'm writing an essay about how truth should be told because it will help materialize solutions to problems and
1. 3 answers
2. 564 views
A ship carrying ice over a lake breaks and spills its cargo.If 3650.0 g of ice at 0.00 celcius are released into the 15456200 g
1. 1 answer
2. 445 views
Entropy both increases and decreases when you build a jigsaw puzzle. How is this possible?
1. 0 answers
2. 516 views
A student places 5.77 grams of wex (a mythical substance often burned for light on other planets) in a test tube and then melts
1. 2 answers
2. 519 views
You wish to know the enthalpy change for the formation of liquid PCl3 from the elements shown below.P4(s) + 6 Cl2(g)--> 4
1. 1 answer
2. 6,085 views
Hi, I'm writing this essay on whether it is better to know the truth or it is not. And I said it is better to know because the
1. 3 answers
2. 1,129 views
4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g)If standard enthalpy change is -906.2 kJ, what quantity of heat is evolved or absorbed in
1. 2 answers
2. 1,905 views
Use standard heats of formation in Appendix L to calculate standard enthalpy changes for the following reactions.1.45 x 10-2 mol
1. 2 answers
2. 1,062 views
OF2(g) + H2O(g) -> O2(g) +2HF(g) ΔH°rxn = -318 kJUsing bond energies, calculate the bond dissociation energy of the O-F bond,
1. 2 answers
2. 3,984 views
OF2(g) + H2O(g) -> O2(g) +2HF(g) ΔH°rxn = -318 kJUsing bond energies, calculate the bond dissociation energy of the O-F bond,
1. 1 answer
2. 1,725 views
Use Hess' Law to calculate the heat of the following equation. Show all work including the reactions that you use, in the form
1. 1 answer
2. 1,367 views
Several years ago a company invented plastic ice cubes. These were colored plastic cubes with frozen water (or another
1. 1 answer
2. 564 views
A 34.6 g block of metal at 2.1oC is dropped into 100.0 g of water at 97.3oC. If the specific heat of the metal is 0.084 cal/goC,
1. 1 answer
2. 494 views
The beaker contains 0.3000 M HCl and the buret contains 0.3000 M NaOH.Write a complete balanced equation for the neutralization
1. 1 answer
2. 924 views
Arrange the following 0.1 M solutions in order of increasing pH and state why you placed eachsolution in that position: NaCH3COO
1. 1 answer
2. 3,394 views
Free radicals are also importantin many environmentally significant reactions. For example, photochemical smog, which forms as a
1. 0 answers
2. 595 views
I have to write a paper about my neighborhood (east flat rock NC) using 3 of the 5 themes of geography. The 3 that I used were:
1. 4 answers
2. 642 views
You have a bag of lots of red and white marbles. In the worst case, how many would you have to pull out to get two marbles of
1. 2 answers
2. 967 views
Questions about Henry Ford the inventor:1. Why was Ford not satisfied with the Model T at first? 2. How would working in a
1. 4 answers
2. 1,653 views
solve the following simultaneous equations5y=13 x+y/2+30=0 2x-2y=9 2x+2y=9 The first set, I have no idea and the second set I
1. 1 answer
2. 680 views
Which of the fllowing dimensions describes te right triangle with an area of 36cm^2 having the greatest perimeter?
1. 2 answers
2. 414 views
Determine the number of triangles ABC possible with the given parts.b=60 a=82 B=100
1. 1 answer
2. 1,570 views
What volume of 14.1M HBr is required to make 250mL of 1.25M HBr solution by dilution with water?
1. 1 answer
2. 492 views
Hi, all! I'm trying to right a small and simple paragraph in french. This is what I'm trying to say:Yesterday, I read an article
1. 7 answers
2. 727 views
If the solubility of alum is 1g @ 1 degree celcius and 1.7 g at 6 degree celcius how much alum (KAl(SO4)2.12H20) would you
1. 1 answer
2. 485 views
a 50.0 ml sample of a 15% (m/v) solution of H2SO4 is added to water to give a final volume of 250.0 ml. What would the final
1. 2 answers
2. 707 views
a balloon is filled with .50 moles out of gas at room temp and normal room pressure, the balloon volume would be 11.2L. if you
1. 1 answer
2. 695 views
What does Paine say to the Tories who stand in the way of Independence? Why did he believe it necessary to address part of his
1. 1 answer
2. 415 views
how do you solveLim sqrt((x+1)/(4(x-1)) x-infinity
1. 0 answers
2. 354 views
At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at rest, slides without
1. 1 answer
2. 1,287 views
select one online source that would be suitable to use as reference for a research paper, a source that you would consider
1. 3 answers
2. 751 views
Calculate [acetate] of 0.057 mol/L solution of acetic acid of Ka = 1.76x10^-5i know to find Ka it's: Ka= products/reactants so i
1. 1 answer
2. 479 views
How many grams of solid sodium sulfate can be added to 1000L of a 0.02mol/L solution of calcium chloride before a precipitate
1. 3 answers
2. 571 views
Which acid is stronger: HClO2 or HClO3?Can you also explain why?
1. 2 answers
2. 1,567 views
(x-10)^2=20Give exact and approximate solutions to three decimal places.
1. 2 answers
2. 455 views
I am not sure how to multiply and simplify this problem:Sqrt 50 * Sqrt 54
1. 4 answers
2. 508 views
�ã200 + �ã70 + �ã300 =
1. 1 answer
2. 357 views
What is the common theme between Modern Totalitarianism, Stalin's Collectivization, and the Kulaks?
1. 1 answer
2. 511 views
To reduce the frequency of a particle when it behaves like a wave, we need to ...-Increase its mass -Reduce its speed -Increase
1. 4 answers
2. 553 views
In a hydrogen atom, if the radius of the orbit of the electron is doubled, then its energy will ...>> Increase by a factor of
1. 2 answers
2. 1,620 views
I'm looking for some resources that give webcam usage data or any kind of research studies on them.I've checked ebscohost and
1. 1 answer
2. 489 views
Hi!My assignment is to write a paper on how love and hate relate to Jean Anouilh's Becket. I'm confused about what I should
1. 1 answer
2. 417 views
Circle L has segment LJ and segment LK as radii. Those 2 segments are perpendicular. Segment KM and segment JM are tangent to
1. 2 answers
2. 1,312 views
Hi, I'm trying to figure out a good topic regarding Alfred the Great.My paper needs to be 4 pages, and it can't just be a
1. 3 answers
2. 589 views
In Los Angeles there are three network television stations, each with it own evening news program from 6:00 to 6:30 PM.
1. 0 answers
2. 623 views
If a father wants to have $100,000 to send a newborn child to college, how much must he invest annually for 18 years if he earns
1. 1 answer
2. 1,198 views
Write the equation of the line in slope intercept form that is parallel to y=-2+11, and passes through the point (4,2).
1. 1 answer
2. 455 views
Statistics students were asked to go home and fill a 1-cup measure with raisin bran, tap the cup lightly on the counter three
1. 1 answer
2. 596 views
P15-1 Comparative statement data for Douglas Company and Maulder Company, two competitors, appear below. All balance sheet data
1. 2 answers
2. 851 views
If you were an environmental researcher and were given funding to assist with one environmental issue, which of the following
1. 1 answer
2. 590 views
Rewrite the equation so that y is the ntion of x:a. 1/7(49-7y)=5x-3y+14 b. 4(2x-3y)=-5(x+3y)
1. 1 answer
2. 453 views
Rewrite the equation so that y is the ntion of x:a. 1/7(49-7y)=5x-3y+14 b. 4(2x-3y)=-5(x+3y) Can you please explain and show how
1. 3 answers
2. 623 views
Person X travels from A to B and then back the same route at a constant speed of 50 km/h. Person Y travels the same route to B
1. 1 answer
2. 561 views
Choose ONE animal species. Your goal is to describe the way in which an evolutionary change might occur for a particular
1. 1 answer
2. 1,239 views
Posted by Kat on Monday, March 2, 2009 at 11:21am.A solution of volume 80.0 mL contains 16.0 mmol HCHO2 and 9.00 mmol NaCHO2. If
1. 3 answers
2. 687 views
A solution of volume 80.0 mL contains 16.0 mmol HCHO2 and 9.00 mmol NaCHO2.If 1.00 ml of 12 M HCl is added to this, what will be
1. 3 answers
2. 1,070 views
Kay, so apparently Casey and I are both having trouble with creating a matrix from a system. I know what a matrix is, but i can
1. 0 answers
2. 424 views
Hi, I'm looking at my book and I can't see how they've gotten this answer:The last bit: -11/20y=-3 Their answer is y=60/11 How
1. 8 answers
2. 969 views
Okay, i need help. I'm solving linear equations in intermediate algebra. My problem is that I never know which number to
1. 9 answers
2. 712 views
I've been trying to figure this one out all day. I have to use either substitution or elimination to solve a system for how many
1. 7 answers
2. 630 views
Should nations pursue goals of international cooperation to ensure security?
1. 1 answer
2. 551 views
How many different book genres are there and what are they?
1. 1 answer
2. 457 views
how has genetic engineering helped people
1. 1 answer
2. 497 views

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