a certain reaction has the following generaln form

72,487 results, page 84

Chemistry-Plz see this DrBob

I am sorry I do not know what happens the symbolism, so I just deleted the symbols. Is it works for you that deleted the symbols? Using standard reduction potentials, calculate the standard Ecell, emf, for each of the following reactions. State if each reaction is spontaneous ...

Math

A landscape architect is designing a new park for the city.His design must include the following types of figures. Exactly 4 boundary segments Exactly 1 pair of boundary segments must be parallel The intersection of at least two of the boundary segments must form an obtuse ...

Chemistry

I'm confused with this question as I don't understand how to write the reactions. Here is the question if you could please help me with this question or just even give me an example on how to do it. I would really appreciate it. Thank you. Write the oxidation and reduction ...

chemistry

Hi, I was hoping someone could double check a chemistry answer for me. I am trying to calculate the Ksp of Ag2CrO4. This question is based on a experiment to determine ksp experimentally. In the experiment the Ksp of silver chromate was calculated using a single displacement ...

chem--please help me check my answer!!

write an ionic and net ionic equation for the following reaction between Fe3+ and NH4OH. Please check my answer!! Thank you. My answer is: ionic: Fe3+(aq) + NH4OH--> Fe(OH)3 + NH4+ net ionic: Fe3+ +OH- -->Fe(OH)3

science

Will you please check? Physical or chemical properties 1. bitter taste = physical taste 2. can neutralize a base= physical property 3. boiling point = physical property 4. reacts with a base to form water= physical 5. reacts with acid to form hydrogen = chemical property 6. ...

Mathematics

(in this question they did not give me any diagrams) use pie 22/7 (a) a piece of wire is bent to form a square of area 121cm squared Calculate the length of each side of the square. Calculate the perimeter of the square. (b) the same piece of wire was bent to form a circle. ...

math

Three forces act on a hockey pick as it slides across the ice; the normal force N represents the force the ice exerts upward on the puck and is given by N= <0,0,100>, the gravitational force G represents the downward force of gravity on the puck and is given by G = <0...

Downloading" repost

Hi, I need some help downloading two PDF files. They are for volunteer work at Roswell Cancer Institute. I believe there is a brochure and an application form: 19433 Volunteer Application Form - single pages.pdf 68K View as HTML Download Volunteer Brochure.pdf 226K View as ...

Business presentation

Imagine you have been asked to make FOUR presentations on "Effective Presentation Skills" for FOUR very different audiences. What would be your presentation objective for each group? Write a 1-sentence objective statement (also known as "purpose statement") for each of the ...

eth- please revise

Should United States government policy favor certain kinds of immigrants. Immigration policy in the United States deals with people that are entering the country; especially, those who plan to work and remain illegally. In essence, when it comes to the issue of immigration, it...

math(check answers please)

please check my math answers again thanks. by the age of 27,justin had visited 25 out of the 50 states.what fraction of the states had justin visited?write the answer in simplest form. A.2/1 B.25/50 C.1/2(I PICKED THIS) D.1/3 Heather drove 10 miles in 22 minutes.which is the ...

chem

Ammonium carbonate (solid) decomposes when heated to produce three gaseous products - ammonia, water, and carbon dioxide. 1. Write the balanced equation for the reaction. 2. Suppose that ammonium carbonate is heated to 500 K in a sealed vessel. At equilibrium there is still ...

9th Grade Biology

You set up 5 samples that contained a range of sucrase concentrations but the same amount of substrate (sucrose). - The pH was kept constant in all tubes buy using the same amount of buffer. - The temperature was kept constant in all tubes (room temp) - A negative control was ...

Math

I have the following chart that I am supposed to find the percent increase in one step, not using a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 When I do this (and round) I get about 19% increase for each one. (we are supposed to round. Then I have another chart that we are...

Chemistry

One mole of carbon (12.0 g) in the form of crystalline graphite is burned at 25 ◦ C and 1.000 atm pressure to form CO2(g). All of the heat produced is used to heat a 4560 g bath of liquid water, originally at 25 ◦ C. What is the final temperature of the water...

Chem/math question - from Sam

For the following reaction at 600. K, the equilibrium constant, Kp, is 11.5. PCl5(g) = PCl3(g) + Cl2(g) Suppose that 2.510 g of PCl5 is placed in an evacuated 470. mL bulb, which is then heated to 600. K. (a) What would be the pressure of PCl5 if it did not dissociate? ___atm...

chemistry

Hello. In the class, we did the experiment to calculate the value of Kc for the following reaction: CH3COOH+CH3CH2OH ÌCH3COOCH2CH3+H2O we measured the mass for 5 cm^3 of all 5 compound above: CH3COOH 5.236 g CH3CH2OH 4.021 g CH3COOCH2CH3 5.020 g H2O 5.020 g HCl 5.098 g when...

Chemistry

Suppose that a stable element with atomic number 119, symbol Wr, has been discovered. (a) Write the ground-state electron configuration for Wr, showing only the valence-shell electrons. (b) Would Wr be a metal or a nonmetal? Explain in terms of electron configuration. (c) On ...

Probability

Let Θ be an unknown random variable that we wish to estimate. It has a prior distribution with mean 1 and variance 2. Let W be a noise term, another unknown random variable with mean 3 and variance 5. Assume that Θ and W are independent. We have two different ...

gr8language

Write four sentances with a different form of lie, then write four sentances with a different form of lay. 1.a) I would never lie to my friends. b)THe baby is lying in her crib. c)I have lain to my parents. d) (lay) 2.a) I like to lay on the ground and stare at the clouds. b...

Chemistry

For a reaction between sodium phosphate and strontium nitrate write out the following: a) The balanced molecular equation b) The ionic equation c) The net ionic equation a) I think I have this one: 2 Na3PO4 (aq) + 3 Sr(NO3)2 (aq) --> 6 NaNO3 (aq) + Sr(PO4)2 (s) b) Should I ...

Physics

A orbiting satellite stays over a certain spot on the equator of (rotating) Mercury. What is the altitude of the orbit (called a "synchronous orbit")?

Physics

A orbiting satellite stays over a certain spot on the equator of (rotating) Mercury. What is the altitude of the orbit (called a "synchronous orbit")?

physics

A orbiting satellite stays over a certain spot on the equator of (rotating) Pluto. What is the altitude of the orbit (called a "synchronous orbit")? km

physics

The mass of a certain neutron star is 2.0 x 1030 kg and its radius is 6,000 m (6 km). What is the acceleration of gravity at the surface of this condensed, burned out star?

math

A certain strain of virus grows in numbers at the rate of 50% per hour. If its present population is 49,000 what will be its population count in 4 hours?

algebra

The length of a certain rectangle is 4 m greater than five times it's width. What are the dimensions of the rectangle if its perimeter is 20m??? please help i have no idea how to do this!

physics

A certain spring stretches 4.6 cm when it supports a mass of 0.55 kg . If the elastic limit is not reached, how far will it stretch when it supports amass of 8 kg ? Answer in units of cm

Physics

A rock thrown with an initial velocity of 35 m/s at an angle of 48° with respect to the horizontal has a range of 963 m on a certain planet. What is the acceleration of gravity on this planet?

calculus

Your manufacturing costs are C(x)= -.0001x2+25x+1200 and the demand for X units of a certain commodity is p(x) =55 – x/1000. What is your maximum revenue and maximum profit?

physics

A certain capacitor stores 473 J of energy when it holds 7.91 x 10−2 C of charge. What is the capacitance of this capacitor? What is the potential difference across the plates?

Physics

A certain capacitor stores 473 J of energy when it holds 7.91 x 10−2 C of charge. What is the capacitance of this capacitor? What is the potential difference across the plates?

algebra

A certain disease affects 9 out of every 10,000 Americans. In a city of 4.5 milion people, how many would you expect to have the disease.

match

A certain land area is 340,000 square miles, and it holds a population of 63.1 million people.Calculate the population density.

math

A certain amount earns 10percent interest compounded annually .What is the minimum number of years(in integers) it takes to double the amount ??

math

. A certain amount earns 10percent interest compounded annually .What is the minimum number of years(in integers) it takes to double the amount ??

Statistics

According to insurance records a car with a certain protection system will be recovered 89% of the time. Find the probability that 3 of 7 stolen cars will be recovered.

Science chemistry

It takes 1 hour and 17 min. for a 1.000gsample of a certain isotope to decay to 0.121g. What is the half-life of this isotope? plssss helpp

chemistry

It takes 1 hour and 17 min. for a 1.000g sample of a certain isotope to decay to 0.121g. What is the half-life of this isotope? plssss helpp

Statistics

According to insurance records a car with a certain protection system will be recovered 90% of the time. Find the probability that 5 of 6 stolen cars will be recovered.

Chemistry

At a certain temperature, 0.700 mol of SO3 is placed in a 3.50-L container. At equilibrium, 0.100 mol of O2 is present. Calculate Kc. 2SO3=2SO2 +)2

Algebra

The value in dollars, V, of a certain stock can be modeled by the equation V=-16+88t+101, where t represents the time in months.When did the stock become worthless?

math

what is the smallest number of people that must be gathered together to be certain that at least two people of the group were born in the same month?

chem

at a certain temperature, .700 mol of SO3 is place in a 4.50-L container. 2SO3(g)--2SO2(g)+O2(g) At equilibrium, .140 mol of O2 is present. Calculate Kc

Chem 2 help

At a certain temperature, 0.800 mol of SO3 is placed in a 2.00-L container. 2so3<->2so2 +o2 At equilibrium, 0.140 mol of O2 is present. Calculate Kc.

math

54. The volume of certain rectangular solid is 12x. If the dimensions of the solid are the integers x,y,and z,what is the greratest possible value of z? a. 36 b. 24 c. 12 d. 6 e. 4 please answer and explain

math

In a certain eatery, there are 5 glass racks having 24 glasses and 8 left over. The answer says there are 130 glasses in all. Is it right? Why?

Physïcs

A body is displaced through a certain distance x by a force of 30 newtons.if the work done is 100 joules and the displacement is in the direction of force,what is the value of x?

physics

A positive charge of 0.0001258 C experiences a force of 0.3 N when located at a certain point. What is the electric field magnitude at that point? Answer in units of N/C.

science

a certain mass of gas occupies 600 cm3 and exerted 1.325*10^5 Nm^-2 pressure. at what temperature would the volume of the gas be halved?

mathematics

a survey shows that 15% of men in a certain town are tall.if a man is chosen on the street of the town one afternoon, what is the probability that he is short.

Maths

On a certain examination the student must answer 8 out of 12 questions including exactly 5 of the first six. In how many ways may he write the examination.?

physics

What equation do I use to find this? Thanks The x and y components of a certain force are measured and found to be Fx = 68 ± 3N and Fy = 42 ± 2 N, respectively. Calculate the error associated with the magnitude of this force?

Physics

At a certain instant an object is moving to the right with speed 1.0 m/s and has a constant acceleration to the left of 1.0 m/s^2.At what later time will the object momentarily be at rest? How do you do this?

Statistics

Assume the probability of certain material to be detective produced by a company is 0.1 to inspect 10 items are selected so, probability at least one is defective

Math

On a certain map 1-1/16" = 300 miles. How many miles does 7/16" equal? Please clarify he process for solving his. What is he correct way to write the equation?

Physics

Two spheres are cut from a certain uniform rock. One has radius 3.54 cm. The mass of the other is 3 times greater. Find its radius.

Cultural Diversity

Should United States government policy favor certain kinds of immigrants? Please tell us what you think, and we'll be glad to critique it and add more ideas.

Algebra II

In an election poll, 56% of voters chose a certain candidate. find the margin of sampling error. So far I have: ME=2sqrt0.56(1-0.56)/400 but I don't know how to finish the problem. Any help would be great!

va.studies

in virginia history,when i asked what is being described using the terms that show connection between two places,it is referring to a certain place,that was probobly misworded on my part

history

Also would anyone know to whom Eleanor Roodevelt was speaking to when she said "No one can make you feel inferior without your consent"? was it aimed at a certain group of Americans? to activists?

math

Twelve randomly-chosen students were asked how many times they had missed class during a certain semester, with this result: 2, 1, 5, 1, 1, 3, 4, 3, 1, 1, 5, 18. For this sample, the median is _____. A. 2.5 B. 3 C. 3.5 D. 2 need help please

Chem

4NH3(g) + 3O2(g) -> 2N2 + 6H20, K=10^80 @ certain temp initially, all the reactants and products have concentrations equal to 12M. At equilibrium, what is the approximate concentration of ammonia?

Chem

4NH3(g) + 3O2(g) -> 2N2 + 6H20, K=10^80 @ certain temp initially, all the reactants and products have concentrations equal to 12M. At equilibrium, what is the approximate concentration of ammonia?

Chem

4NH3(g) + 3O2(g) -> 2N2 + 6H20, K=10^80 @ certain temp initially, all the reactants and products have concentrations equal to 12M. At equilibrium, what is the approximate concentration of ammonia?

pys 202

One of the reasons that certain advertisements are successful is because viewers want to behave like those they observe. What is the general term that psychologists use to describe this type of behavior?

Psy 202

1. One of the reasons that certain advertisements are successful is because viewers want to behave like those they observe. What is the general term that psychologists use to describe this type of behavior

Applied Ethics

How do I hypothesize Contracturalism for a vet who needs to get a certain breed of dog for his daughter with allergies, but would prefer to adopt rather than purchase one from a puppy mill?

adult development

One of the reasons that certain advertisements are successful is because viewers want to behave like those they observe. What is the general term that psychologists use to describe this type of behavior?

business law

B. Telephones S.'s store and orders certain goods that S. delivers to B. Neither party says anything about the price or payment terms. B. does not pay S. Is S. entitled to be paid by B.? Why?

Criminal Justice/Social Impact of Technology

__________ theories hold that certain actions or practices are inherently right or wrong. A. Consequentialist B. Utilitarian C. Deontological E. Ethical I think it's C.

calculus

Q: Suppose that for all xE(0,5), f(x) is between 1+x and 3+sin((pi)(x)). Find lim x->2 f(x). Is this question related to the intermediate value theorem? It is confusing me, can anyone help out? I am not certain of what xE(0,5) is defining, is that a set of x values or am I ...

math

Q: Suppose that for all xE(0,5), f(x) is between 1+x and 3+sin((pi)(x)). Find lim x->2 f(x). Is this question related to the intermediate value theorem? It is confusing me, can anyone help out? I am not certain of what xE(0,5) is defining, is that a set of x values or am I ...

Science

Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously? Florescence Rarefaction Radioactivity** Electromagnetic (**=my answer)

plz help trig!!!!!

A boat sails 20 km in a direction of N75°E. Draw the 20 km travelled in a direction of N75°E as a vector v in standard position. Find the component form of the vector v. Round your answers to the nearest hundredth. 2 pts. B. Next, the boat turns and sails 10 km in a ...

programming logic raptor

1. a.input names of students from the user, terminated by "zzz", 0,0,0, and create a data file grades with records of the following form: student (string), test1 (integer), test2(integer), test3 (integer) b. display the contents of the file grades created in part a. each ...

Math

Three numbers form a geometric progression. If 4 is subtracted from the third term, then the three numbers will form an arithmetic progression. If, after this, 1 is subtracted from the second and third terms of the progression, then it will again result in a geometric ...

Chemistry

2KMnO4(aq)+16HCl(aq)->2MnCl2(aq)+5Cl2(g)+8H2O(l)+2KCl(aq) A.)the volume of 0.414 M KMnO4 needed to produce 1.66 mol MnCl2 B.) the volume of 2.15 M HCl needed to produce 112 mL of 0.618 M KCl C.)the molarity (M) of the HCl solution when 26.42 mL react with 28.38 mL of 0.398 ...

Public Speaking

I need help writing a speech out on the following topic:Why banning the use of cell phones while driving should be mandatory nationwide. tate the general purpose, specific purpose, and central idea clearly and in the appropriate form.4. Limit your main points and supporting ...

wORLD HISTORY

What is one reason that the Middle Ages are sometimes referred to as the "dark ages? for the fertile soil that supported agriculture *for the persecution suffered by certain Christian groups, as well as Jews and Muslims for the political disorder that resulted from waves of ...

math

**Problem 3: Create a linear function (y=mx+b) and graph the line for the following set of data. x | y 2 | 1 4 | 2 6 | 3 First, use the slope formula to find slope: (y2-y1)/(x2-x1) Then, put the slope (m), a 'y' point, and matching 'x' point into the formula y=mx+b. Solve for...

Chemis

Steve, in an attempt to impress his girlfriend, plops 18.2 grams of sodium metal into 500 mL of concentrated phosphoric acid (density = 1.88 g/cm3) in a beaker. The reactants were both initially at 25 oC. The reaction gently produced bubbles of hydrogen and Janet was not ...

chemistry

Steve, in an attempt to impress his girlfriend, plops 18.2 grams of sodium metal into 500 mL of concentrated phosphoric acid (density = 1.88 g/cm3) in a beaker. The reactants were both initially at 25 oC. The reaction gently produced bubbles of hydrogen and Janet was not ...

Chemistry

Phenol dissolved into sodium hydroxide solution to give another solution A. What would be formed when A reacted with phenylamine/nitrous acid mixture , butylamine/nitrous acid mixture and ammonia/ nitrous acid respectively ? The resulting solution were brown , red and ...

Foreign languages

I urgently need to check how to rephrase modals expressing possibility/probability etc. 1. I’m sure/certain he didn’t rob the bank. He can't have robbed the bank (only choice) 2. I’m certain/sure he stole the ring from Peter William’s bedroom. He must have stolen.... 3...

Chemistry- urgent!

When a solution of sodium oxalate (Na2C2O4) is added to a solution of lanthanum (III) chloride, lanthanum oxalate (molar mass 541.86 g/mol) The balanced net ionic equation for the reaction is: 3C2O4^2- (aq) + 2La^3+ (aq) --> La2(C2O4)3 (s) Thirty ml of 0.2000 M sodium ...

chemistry

For the following fusion reaction, Calculate change in energy per mole.( Answer in J/mole) 2H1 + 2H1 ---> 3H1 + 1H1 (the mass number is in front of the atom and the atomic number is behind the atom) Given info:Atoms with their masses(amu) H-1 1.00782 H-2 2.01410 H-3 3.01605...

college chem

Ammonium carbonate (solid) decomposes when heated to produce three gaseous products - ammonia, water, and carbon dioxide. 1. Write the balanced equation for the reaction. 2. Suppose that ammonium carbonate is heated to 500 K in a sealed vessel. At equilibrium there is still ...

probability

Consider a Poisson process with rate λ. Let N be the number of arrivals in (0,t] and M be the number of arrivals in (0,t+s], where t>0,s≥0. In each part below, your answers will be algebraic expressions in terms of λ,t,s,m and/or n. Enter 'lambda' for λ...

Probability

Consider a Poisson process with rate λ. Let N be the number of arrivals in (0,t] and M be the number of arrivals in (0,t+s], where t>0,s≥0. In each part below, your answers will be algebraic expressions in terms of λ,t,s,m and/or n. Enter 'lambda' for λ...

Science-Repost-Universe&Stars

Give 2 reasons y elliptical galaxies are considered to be older & more evolved than spiral galaxies. They are considered to be older because they have little instellar matter and because they rarely form new stars like the other galaxies do. They seem to be more evolved than ...

English - Please correct this.

In both Midnight’s Children and The God of Small Things, idiosyncratic capitalizations are used abundantly in order to convey a deeper meaning from certain words in the text. This technique is employed throughout both novels in order to bring attention to the special ...

Stastics

Which of the following descriptions of confidence intervals is correct? (Select all that apply) a. If a 95% confidence interval contains 0, then the 99% confidence interval contains 0 b. If a 99% confidence interval contains 0, then the 95% confidence interval contains 0 c. If...

Chemistry

I am beyond desperate. I do not understand how to calculate heat change at all and I have been looking online and reading my book for the last three hours. Below is posted a problem. It would be amazing if someone could work through it and explain each step they are doing and ...

Chemistry

Tarnish on iron is the compound FeO. A tarnished iron plate is placed in an aluminum pan of boiling water. When enough salt is added so that the solution conducts electricity, the tarnish disappears. Imagine that the two halves of this redox reaction were separated and ...

Engineering

In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ½O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the ...

chemistry

During the combustion of 5.00g of octane C8H18, 239.5 kcal is released. Write a balanced equation for the combustion reaction. Are reactants or products favored? What is the sign of change of heat for this reaction? how much energy is released by the combustion of 1.53mol of ...

Law

Please choose the correct answer 21. All of the following statements are true, EXCEPT: a. Generally, courts will refuse to enforce contracts that involve illegal activities. b. Generally, courts will refuse to enforce contracts that are determined to be contrary to public ...

chemistry

We did this in a lab and nothing happened, but I'm pretty sure something was supposed to happen, so my question is: What happens when you put a pellet of sodiumhydroxide on a watch glass and observe it for 5-10 minutes? If there were hudidity in the air, it should have ...

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