# The equilibrium constant (Keq) is the ratio of ____ concentrations to ____ concentrations at equilibrium, with each concentration raised to a power equal to the number of ____ of that substance in the balanced chemical equation.

86,435 results, page 93

1. ### Physics

2 moles of ideal gas are in a cylinder container with cross-sectional area 1*10^-2 m^3. Cylinder is fitted with a light, movable piston that is open to atmosphere, where pressure is 10^-5 PA.A 50KG MASS PLACED ON PISTON KEEPS IT IN mechanical equilibrium when temperature is ...
2. ### physics

The torques acting on the crane boom can be computed about anaxis passing through the top of the boom. (this is the place wherethe spring scale and mass hanger connect to the boom) apply thesecond condition for equilibrium to the crane boom and derivethe resulting equation for...
3. ### physics

A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Two metallic blocks are placed in the water. One is a 50 g piece of copper at 84°C. The other sample has a mass of 58 g and is originally at a temperature of 100°C. ...
4. ### Math

What's the formula for this (x+a)^n were x is a variable a is a constant and n is some power that can change example (x+5)^2 (x+5)^3 (x+5)^4 what's the general formula?
5. ### Math

For once I am the one who needs help so help if you can ASAP. 1.Determine which ratio forms a proportion with 9/5 by finding a common multiplier. A. 54/30 B. 45/50 C. 45/90 D. 90/20 Also.. 2.Determine which ratio forms a proportion with 14/35 by writing the ratio in simplest ...
6. ### chemistry

For the system H2(g) + CO2(g) <---> H2O(g) + CO(g) at equilibrium, the addition of H2(g) would cause (according to LeChatelier’s principle) 1. more H2O(g) and CO(g) to form. 2. only more CO2(g) to form. 3. only more H2O(g) to form. 4. no change in amounts of products ...
7. ### AIG MATH

A fruit seller has an equal number of apples and oranges.He sold 109 oranges and 45 apples.The number of apples left is 5 times the number of oranges left.What is the total number of fruit he had at first?
8. ### Comm 215

Please guideme to which ones are wrong.. Thank you Grammar Part I: True or False 1. The following word group is a FRAGMENT: That movie, one of my favorites. x_True __False 2. The following word group is a FRAGMENT: The local baseball team, needing a good pitcher most of all. ...
9. ### Maths

a theory about moth navigation is that moths fly at a constant angle relative to a light source. a particular moth flies at 50 degrees to the light source,L, and it measures its bearing 10 times in one revolution. Hint:one revolution is 360 degrees. 10 times makes the angle R1...
10. ### math

show work 2 times a number increased by 28 is less than or equal to 6 times a number?
11. ### Algebra

The sum of two numbers equal 25. The second number is 4 times larger than the first number. What are the two numbers
12. ### Math

The of stamps owned by Shirley, Mary and Daisy is in the ratio of 5: 6 7. The total number of stamps is 540. Mary gives so of her stamps to Shirley and 40 stamps to Daisy. Find the new ratio of their stamps.
13. ### macoreconomics

Suppose there is a temporary but significant increase in oil prices in an economy with an upward-sloping Short-Run Aggregate Supply (SRAS) curve. If policymakers wish to prevent the equilibrium price level from changing in response to the oil price increase, should they ...
14. ### Macroeconomics

Suppose there is a temporary but significant increase in oil prices in an economy with an upward-sloping Short-Run Aggregate Supply (SRAS) curve. If policymakers wish to prevent the equilibrium price level from changing in response to the oil price increase, should they ...
15. ### chemistry

the reaction contains initially 5 moles of CO and 2 moles of H2O.the volume is 1 litre.but at equilibrium it is 0.5 moles of h2o .then value of Kc for reaction is.
16. ### Math

Please help IF I am right or not Which of the following correctly simplifies the expression 3 to the power of 2 multiplied by 5 to the power of 0 whole over 4, the whole squared.? 3 to the power of 2 multiplied by 1 whole over 4, the whole squared. = 3 to the power of 1 ...
17. ### math

1. Which is a set of collinear points? J,H,I L,H,J J,G,L L,K,H 2. Use the diagram to identify a segment parallel to. 3. The meadure of angles A is 124. Classify the angle as acute, right, obtuse, or straight. Acute Straight Right Obtuse 4. Find the measures of the complement ...
18. ### physics- answers check

1. For a bar magnet, the magnetic field lines point a. towards the South pole. b. towards the North pole. c. always towards the magnet. d. always away from the magnet. my answer: a 2. Magnetic field lines a. are straight lines. b. are always circles. c. form continuous loops. ...
19. ### Chemistry-ksp and kb

We were given a 0.1 M KOH solution.25cm3 of that solution is taken and 5g of MX precipitate is added to that.X- is an anion of a strong acid. Kb for MOH=2*(10)^-5 Ksp for MX= 3*(10)^-6 M 1)find the [M+] in the solution 2)Find the [X-] concentration and pH of the solution. My ...
20. ### algebra

give the demensions of rectangles with the perimeters of 70 feet and length-to-width ratios of 3 to 4, 4 to 5, and 1 to 1. Ok, the perimeter is 70 and perimeter = 2(length + width) The ratio is length:with=3:4 so length = (3/4)width 70 = 2(length + width) =2((3/4)width + width...
21. ### chemistry

The two isotopes of uranium, 238U and 235U, can be separated by effusion of the corresponding UF6 gases. What is the ratio (in the form of a decimal) of the root-mean-square speed of 238UF to that of 235UF6 at constant temperature?
22. ### Science 1 question

5. Which of the following would be true during the inhalation phase of breathing? A. The lungs are inflated, oxygen concentration is high, and carbon dioxide concentration is low in the alveoli. B. The lungs are deflated, oxygen concentration is high, and carbon dioxide ...
23. ### physics

We start with 5.00 moles of an ideal monatomic gas with an initial temperature of 123C. The gas expands and, in the process, absorbs an amount of heat equal to 1300J and does an amount of work equal to 2040J. What is the final temperature of the gas? Use R= 8.3145J/(mol*K) for...
24. ### Chemistry

Rate of teaction depends upon a)Number of effective collision b)Concentration of the reactant c)Temperature d)All of these
25. ### chem

For which element would you expect isotope effects to be of the greatest importance in CHEMICAL processes? a.H b.He c.Li d.B This problem could be interpreted many different ways and come up with different answers, I suppose. In the context of number of compounds formed, I ...
26. ### chemistry

N2(g)+3H2(g)<=>2NH3(g) +▲H if uou are preparing NH3, hiw does the following increase the yield of NH3? (a) ▲[N2] ▲[H2] (b) ▲T of the chamber storing NH3 (c) ▲P of the system (d) ▲[NH3(g)] * <=> equilibrium * ▲ change
27. ### chemistry

N2(g)+3H2(g)<=>2NH3(g) +▲H if uou are preparing NH3, hiw does the following increase the yield of NH3? (a) ▲[N2] ▲[H2] (b) ▲T of the chamber storing NH3 (c) ▲P of the system (d) ▲[NH3(g)] * <=> equilibrium * ▲ change
28. ### chemistry

N2(g)+3H2(g)<=>2NH3(g) +▲H if uou are preparing NH3, hiw does the following increase the yield of NH3? (a) ▲[N2] ▲[H2] (b) ▲T of the chamber storing NH3 (c) ▲P of the system (d) ▲[NH3(g)] * <=> equilibrium * ▲ change
29. ### math

the ratio of horseshoes to shamrock was 11 to 2, and five times the number of shamrocks was 3 less than the number of horseshoes. how many were shamrocks?
30. ### chemistry

WHAT IS THE RATIO OF THE NUMBER OF MOLECULES IN 71 GRAMS OF CHLORINE TO THE NUMBER OF MOLECULES IN 2 GRAMS OF HYDROGEN
31. ### algebra

find two numbers such that if 7 is added to the greater the answer is four times the smaller number, while 28 added to the smaller number is equal to twice the greater number.
32. ### Chemistry(Please check)

Delta G^o for a reaction can be calculated from? 1. delta G^o f data 2. Delta H^o f and delta S data 3. equilibrium constants I chose that delta G can be calculated from H and S values. Would you agree?
33. ### Chem

For the reaction I_2(s)+Cl_2(g) ==> 2ICl(g) ÄH= 36kJ, ÄS= 158.8J/K at 25° C. Calculate the temperature at which Keq is 4.0*10^3. ÄG= ÄH- TÄS = 36 - (298)(0.1588) = -11.32 ÄG= -RTlnK -11.32= -8.31Tln(4*10^3) -11.32= -6892.35 T T= .00164 correct answer = 128°C =
34. ### calculus

Find the constant a such that the function is continuous on the entire real line g(x)=x^2-a^2/x-a if x doesn't equal a 6 if x=a
35. ### physics

You should expect concrete to have an elastic constant that is _____ than wood. a. larger than b. smaller than c. equal to
36. ### chemistry help asap???

Why is boiling-point elevation a colligative property? a.It does not depend on the concentration of particles. b. is inversely proportional to the concentration of particles in a solution. c. It is directly proportional to the concentration of particles in a solution. d. It is...
37. ### science

A 4.50 g mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end of the spring is fixed to a wall. It takes 3.6J of work to compress the spring by 13.0 cm. If the spring is compressed, and the mass is released from rest. find a) the...
38. ### Physics

In lab, a meter stick has its center of gravity at the 45.5 mark. The stick is supported with a meter stick clamp at the 25.0 mrk. A 3.500 kg mass is hung at the 18.2 cm mark to maintain rotational equilibrium. Whats is the calculation of the counterclockwise torque provided ...
39. ### Physics

A 70 kg person is having a tug-of-war. The rope is horizontal and 1.3 m above the ground. This person’s center of mass is 1.0 m from the ground when he is in an upright standing position. If the force his opponent exerts on the rope is 400 N, what angle must the person be ...
40. ### Physics

A uniform bar weighing 60N has a length of 4mamd it is supported at its ends by a string. A load W=20N is placed at some point on the bar such that it is in equilibrium when the tension in the string at the left end is 80N, a) locate tge position of W. b) find the tension in ...
41. ### Chem

Consider the reaction: A(g)⇌2B(g) Find the equilibrium partial pressures of A and B for each of the different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm and that the initial partial pressure of A is 0.0 atm. Make any appropriate ...
42. ### Math

A pharmacist is to prepare 30 milliliters of a solution with a drug concentration of 2 mg/mL. To do so, he will mix a solution with a drug concentration of 7 mg/mL with grape-flavored syrup. If 𝑥 represents the number of milliliters of grape-flavored syrup needed, find...
43. ### math Help ASAP

write and solve inequality 17. the speed limit of a highway is 55 miles per hour. a car is traveling at least 65 miles per hour. how many miles per hour m over the speed limit is the car traveling? A 55-m>equal to 65;m. eqaul to 10 B m+65< equal to 55; m < equal to -...
44. ### science

If an automobile engine delivers 40.2 hp of power, how much time will it take for the engine to do 5.90 ✕ 105 J of work? (Hint: Note that one horsepower, 1 hp, is equal to 746 watts.)
45. ### Physics

If an automobile engine delivers 45.2 hp of power, how much time will it take for the engine to do 5.40 105 J of work? (Hint: Note that one horsepower, 1 hp, is equal to 746 watts.) in seconds
46. ### physics

A person hammered a 0.5 kg something (substance ) with a hammer that its weight is 2.5 kg , with the velocity 65 m /s ,, if one third of the hammer's energy turn into the internal energy to both of the substance and the hammer , then what is the change (increasing ) internal ...
47. ### Chemistry

I just to know how to identify the substance that is reduced, the substance that is oxidized, the oxidizing agent and the reducing agent in each reaction. As (s) + ClO3-(aq) → H3AsO3 (aq) + HClO(aq) CN-(aq) + MnO4-(aq) → CNO-(aq) + MnO2(s) C2H5OH + MnO4- → ...
48. ### Algebra Sq Rt

I have a sq rt sign with a 3 on the left side. That means I'm looking for the cube of the number inside the square root? That number is 189xto the 8th power. So I multiply 189x 8 times before I find the cube or do I find the cube of 189?
49. ### Chemistry

A substance has the following properties: Heat capacities: 1.34 J/g oC (solid) 3.02 J/g oC (liquid) 2.55 J/g oC (gas) Heat of Fusion = 4.23 kJ/mole Heat of Vaporization = 23.5 kJ/mole Boiling Point = 88.5 oC Melting Point = -30.0 oC Molar Mass = 96.3 g/mole How much energy (in...
50. ### geometry

IF d equal 18 cm what is the circumference and what is the circumference to the second power.
51. ### physics

1. Calculate the radius of orbit for a hydrogen electron in the n=3 level. 2.The half life of an unknown substance is one minutes. If the initial number of particles is 20 how many particles will remain after two minutes have elapsed?
52. ### ORG. CHEM- Extraction Conclusion

Does this sound okay, if not how might i improve it? Thanks. In this lab the purpose states that the method of extraction is to separate and distil two different immiscible liquids, an organic layer and an aqueous layer. In this experiment an ion transfer was apparent when the...
53. ### Math

If 3/4 of the employees in a supermarket are not college graduates,what is the ratio of the number of college graduates to those who are not college graduates? I have solved ,please check it. Let x total employees (3/4)× not graduates So (1/4)x are graduates Ratio graduates ...
54. ### physics

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 49.0 . The acceleration period lasts for time 6.00 until the fuel is exhausted. After that, the rocket is in free fall. Find the maximum height reached by the rocket. ...
55. ### physics

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 29.4 . The acceleration period lasts for time 9.00 until the fuel is exhausted. After that, the rocket is in free fall. Find the maximum height reached by the rocket. ...
56. ### algebra

Translate the statement of variation into an equation; use k as the constant of variation. V varies jointly as s and the fourth power of u.
57. ### Biology

When cells increase in size, the surface area to volume ratio decreases. But which surface area to volume ratio is better to the cell as well as to the organism? The larger or smaller ratio?
58. ### macroeconomics

When the market price is above equilibrium price, the market price will be drive
59. ### economics

When the market price is above equilibrium price, the market price will be drive
60. ### C programming, not C++

design and implement such a function and use it in a program called part3.c that allows someone to enter two real numbers and an epsilon value (also a real number) and reports if the two numbers are equal (+/- epsilon) or not. If you were asked this question, how would you try...
61. ### calc ii

if we know that 12 is less than or equal to f(x) which is less than or equal to 18, what can be say about this inequality? ? is less than or equal to the definite integral from 3 to 10 of f(x) is less than or equal to ? No clue how to approach this one? I know the integral is ...
62. ### College Algebra

How do you solve this to graph the system of inequalities? x+2y is equal to or less than 6 2x+y is equal to or less than 6 x is equal to or greater than 0 y is equal to or greater than 0
63. ### chemistry

A is a solution of trioxonitrate(v) acid, HNO3, of unknown concentration. B is standard solution of sodium hydroxide containing 4.00g per dm3 of solution. 25cm3 portions solution B required an average of 24.00cm3 of solution A for neutralization, using 2drops of methyl orange...
64. ### physics

For any circuit the number of independent equations containing emfs, resistances, and currents equals the number of branches. why? The only type of circuit that branches is parallel. But there can be electric circuit with a combination of both parallel and series. Thank you ...
65. ### Chemistry

The atomic number of an electrically neutral atom is equal to the number of: Choose all that apply. Neutrons Electrons Protons I chose Electrons but somehow my homework program is telling me it's wrong? I also tried checking all of them.
66. ### Ratio of two triangles

What would the ratio be if the first triangle has sides of 4cm, 8cm, and 12cm and the second triangle had sides of 1cm, 2 cm, and 3 cm? Would the ratio be 4:1 or 1:1/4?
67. ### College Economics

An economy has the follwoing comsumption function: C= 200+ 0.8di The government budget is balanced with government purchases and taxes both fixed at \$100. Net exports are \$100. Investments \$600. Find the equilibrium GDP. What is the multiplier for this economy? If G rises by \$...
68. ### ap chemistry

home / study / questions and answers / science / chemistry / balance the following example of a heterogeneous ... Your question has been answered! Rate it below. Let us know if you got a helpful answer. . Question Balance the following example of a heterogeneous equilibrium ...
69. ### Physics

A small plastic ball of mass 6.30 10-3 kg and charge +0.150 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the vertical. The area of...
70. ### Chemistry

A sample of air was passed through an electrical discharge causing the following reaction N2(g) + O2(g)->2NO(g) . Assuming that 1.00 mole of air (78% N2, 21% O2) was originally present at 1.00 atm, determine the partial pressure (in atm) of NO at equilibrium. Kp = 0.0123 at...
71. ### Physics

19) A 100-g aluminum calorimeter contains 250g of water. The two substances are in thermal equilibrium at 10 C. Two metallic blocks are placed in the water. One is a 50-g piece of copper at 80 C. The other sample has a mass of 70g and is originally at a temperature of 100 C. ...
72. ### Physics

Which are in static equilibrium? 1. A box sliding down a ramp. 2. A baseball after being hit. 3. A box sliding along a horizontal surface. 4. A perfectly upright freely spinning top 5. A freely swinging simple pendulum 6. A spinning astronaut floating out in deep space. 7. A ...
73. ### Algebra

(3*10 to the second power)(1.5*10 the the negative fifth power) SCIENTIFIC NOTATION: 4.5*10 to the negative third power My question is what is the standard form I got 4500 but if I look closely at the problem I don't think that's possible please tell me if 4500 is correct
74. ### Physics

Generator is supplying power to a factory by cables of resistance 20 ohm if the generator is generating 50 kilowatt power at 5000 volt.what is the power receiver factory?
75. ### physics

A 120-V motor has mechanical power output of 2.20 hp. It is 92.0% efficient in converting power that it takes in by electrical transmission into mechanical power. (a) Find the current in the motor.
76. ### physics

a neutron of mass 1.67*1o power of (-27) is moving with a velocity 10 to the power of(6) collides with a deuteron of mass 3.34*10 to the power of (-27) kg at rest .after collision if both have single particle find its velocity
77. ### phyics

Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 175 N/m. The motion of the object on spring 1 has twice the amplitude as the motion of the object on spring 2. The magnitude of the...
78. ### physics help!

Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 155 N/m. The motion of the object on spring 1 has twice the amplitude as the motion of the object on spring 2. The magnitude of the...
79. ### Science

Which of the following is not a postulate of the kinetic molecular theory? A. The collisions between gas molecules are elastic. B. The energy of a gas molecule is determined by quantum mechanics. C. Gas molecules travel in random, straight paths. D. The absolute temperature of...
80. ### Managerial Economics

How does a price ceiling undermine the rationing function of market-determined prices? How could rationing coupons insure that consumers with the highest values get the limited amount of a good supplied when government price ceilings create shortage? Fully explain answer based...
81. ### managerial economics

How does a price ceilng undermine the rationing function of market-determined prices? How could rationing coupons insure that cnsumers with the highest values get the limited amount of a good supplied when government price ceilings create shortages? Fully explain your answer ...
82. ### physics

Suppose 300 g of water at 20°C is poured over a 50-g cube of ice with a temperature of -6°C. If all the ice melts, what is the final temperature of the water? If all of the ice does not melt, how much ice remains when the water–ice mixture reaches equilibrium?
83. ### Maths

I can't do the following problem. I am not sure what to do when you have an algerbraic power & have to multiple it by a real number? ((x^ny^(m+3))^2)/x^(n+2)y^3-m)) * ((x^2y)/(x^(n-5)*y^(5-3m))
84. ### algebra

how do I simplify the fraction? 2 3√18 ( 3 is the power, small number) 6
85. ### Math

Determine whether x to the third power is always, sometimes, or never a positive number for x+ ). Explain your reasoning.
86. ### Algebra 1

How many real number solutions exist for 2x^2 + 8x + 8 = 0 The first part is 2x to the power of 2.
87. ### math

what is the base number for 729, 625 as expressed as a power?
88. ### Math

1. Cystic fibrosis (CF), a life-threatening lung disease, is caused from the inheritance of a recessive allele from both parents for the CFTR gene. In order for this disease to manifest itself, one needs to be homozygous recessive for this autosomal gene. According to the ...
89. ### World History

Explain how totalitarian rulers were able to acquire power during the 1930s. Describe at least two specific totalitarian leaders, the conditions in their countries that played a part in their rise to power, and the way they used those conditions to gain power.
90. ### Physics

Suppose your power company charges \$1.00 per kWh as its power rate. (a) What is the power in kW for an air conditioner that pulls 5 A on your standard 115 V household circuit? (b) How much does it cost you to run your air conditioner for 12 hours?
91. ### Chemistry

Is it possible for the dispersion forces in a particular substance to be stronger than the hydrogen bonding forces in another substance? I get that in general, LD is weaker than H-bonding, but LD does exist is both polar and nonpolar substances and what if it occurred between ...
92. ### physics lab

For a physics lab, I measured length, width, thickness, and mass of 2 blocks of wood, 3 trials each. There were 2 questions on the lab that I did not understand how to do. 1. For each trial, find the ratio between the mass and the volume. Based on your data, what is the ...
93. ### AP Chemistry

I know this is such an easy question, but I completely forgot how to do it. Can someone please help me out? Thanks. If 57.84 g of nickel (Cp = 0.0946 J/g Degrees C) originally at 97.4 degrees C is placed into a calorimeter with 48.24 g of water (Cp = 4.184 J/g degrees C), it ...
94. ### Chemistry

A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 22°C and 47% relative humidity (that is, the water vapor in the air is 0.47 of the equilibrium vapor pressure at 22°C). The bottle is brought outside and stored at 0.0°C. My question is what does the ...
95. ### Chemistry

Acid: Pka: H20 15.7 NH3 38 HCL -8 NH4+ 9.2 Given the list of pKa values, which acid will have the largest amount of conjugate base present in the solution at equilibrium? H2O NH3 NH4+ HCl
96. ### chemistry

Acid: Pka: H20 15.7 NH3 38 HCL -8 NH4+ 9.2 Given the list of pKa values, which acid will have the largest amount of conjugate base present in the solution at equilibrium? H2O NH3 NH4+ HCl
97. ### chemistry

Write an equilibrium expression for each chemical equation involving one or more solid or liquid reactants or products. HCHO2(aq)+H2O(l)⇌H3O+(aq)+CHO−2(aq) Use A for [HCHO2], B for [H2O], C for [H3O+], D for [CHO−2].
98. ### Chemistry

you add 0.05ml of 0.10M agno3 to 4ml of 2.0 nacl it forms saturated solution of agcl<---> ag+ + cl- using a saturated solution you set up ag | ag+( test solution after reaction) || ag+(1.0ml) | ag how do we calc the equilibrium of ag+ of the test solution after reaction ?
99. ### Chemistry Help PLEASE!!

I don't know how to do this question, I understand we have to use ICE but I keep getting the wrong answer when I solve for x, it's just not working for me. Consider the following reaction: A(g) -> 2B (g) Find the equilibrium partial pressures of A and B for each of the ...
100. ### Physics

A 95 gram piece of metal is heated to 98°C and placed into 200mL of water insulated at 20°C. If the equilibrium temperature is 27.20, find: The heat gained by the water. calories The specific heat of the metal. cal/(g°C) Hint: 1 mL water has a mass of 1 gram I have no idea ...