a certain reaction has the following generaln form
74,866 results, page 86

Chem
Which of the following compounds are soluble? Choose at least one answer. a. BaSO4 b. K2SO4 c. KBr d. NaOH e. Al(OH)3 I originally thought it was the last four, but it isn't, or it isn't only/all of them. Aren't all sulfates and potassium soluble? What are the reactant ions in... 
Chemistry
I need help finding reactions beneficial to society. Here's the assignment quoted. "Your assignment is to research two different chemical reactions that are used to address social/environmental needs or problems. These reactions must clearly be attempting to improve our world... 
Chemistry
I need help finding reactions beneficial to society. Here's the assignment quoted. "Your assignment is to research two different chemical reactions that are used to address social/environmental needs or problems. These reactions must clearly be attempting to improve our world... 
Chemistry Dr. Bob
Reacting 1 L of H2(g) with 1 L C2H2(g) (both at STP) results in the formation of 1 L of C2H4(g) if the reaction is maintained at the same conditions (STP) and goes to completion. If this reaction produced 6.3 kJ of heat (absorbed by the surroundings), calculate: a) the PV work... 
Math
A piece of wire is bent to form a square of area 121cm. Calculate: a)the length of each side of the square. b)the perimeter of the square. The piece of wire is now bent to form a circle using π=3.14 Calculate: a)the radius of the circle b)the area of the circle 
chemistry
Which of the following combinations of atomic orbitals can combine to form sigma bonds? sssppphybrid orbital  hybrid orbitalhybrid orbital  shybrid orbital  p What is the bond angle (in degrees) resulting from sp hybridization? What is the bond angle (in degrees) ... 
chemistry
In an experiment a student allowed benzene C6H6+ TO REACT WITH EXCESS BROMINE BR2+ In an attempt to prepare bromobenzene C6H5Br. This reaction also produced as a byproduct, dibromobenzene, C6H4Br2+ On the basis of the equation. C6H6 + Br2 > c6h5Br + H Br a) What is the ... 
Chemistry
In an experiment a student allowed benzene C6H6, TO REACT WITH EXCESS BROMINE BR2, in an attempt to prepare bromobenzene C6H5Br. This reaction also produced as a byproduct, dibromobenzene, C6H4Br2, On the basis of the equation. C6H6 + Br2 > c6h5Br + H Br a)What is the ... 
math
Is there anywher i can go for further explanations on how to solve for the following statements on how to solve them: Dividing writing each result in simplest form & adding & subtracting I searched Google under the key words "fractions divide add subtract" to get this source: ... 
Math
The bar graph shows the cumulative number of death form AIDS in the US, from 1990 through each of the years 19962002. The data in the graph can be modeled by the following polynomials, in which f(x) and g(x) represent the cumulative number of AIDS deaths x years after 1990 F(... 
General Chemistry (Chem101)
A chemist mixes two liquids A and B to form a homogeneous mixture. The densities of the liquids are 2.0514 g/mL for A and 2.6678 g/mL for B. When she drops a small object into the mixture, she finds that the object becomes suspended in the liquid; that is, it neither sinks nor... 
Math
1. Find the product in simplest form 2/5 x 3/7 A. 14/15 B. 5/12 C. 6/35 D. 1/5 2. find the product in simplest form 9/10 x 5/7 A. 1 13/50 B. 9/14 C. 14/17 D. 4/7 
Algebra
1. Use the Distributive Property to simplify the expression. (1)(4c) 2. Use the Distributive Property to simplify the expression. 4(2x 4) 3. Use the Distributive Property to simplify the expression. (10 + 4 y) 1/2 4. To which subsets of real numbers does the number 22 ... 
Algebra
1. Use the Distributive Property to simplify the expression. (1) (4c) 2. Use the Distributive Property to simplify the expression. 4 (2 x  4) 3. Use the Distributive Property to simplify the expression (10+4y) 1/2 4. To which subsets of real numbers does the number 22 ... 
history
C/C between american slavery and encomienda system. The encomienda system was a form of land ownership set up after 1492 to divide both the lands and peoples of the New World into workable pieces that were run by Spanish settlers. This system was abused. The Indians were ... 
calculus
Evaluate h(x) for the following values of x? Consider the following function. h(x) = (tan(x)x)/x^3 (a) Evaluate h(x) for the following values of x. (Give your answer correct to six decimal places.) x = a) 1 b) 0.5 c) 0.1 d) 0.05 e) 0.01 f) 0.005 what is f(x) (b) Guess the ... 
5th grade Math
Can you check my answer? 4. Solve. 6 tenths = ___ thousandths Answer = 600 5. Write 347.392 in expanded form. Answer: (3*100)+(4*10)+(7*1)+(3* 1/10) + (9*1/100)+ (2*1/1000) 9. Write in standard form (number name) for: three thousand four hundred eighttwo and sixtyfour ... 
chemistry
I was way off on the other problem. But I see how you got the answer. Last one...thanks i'm learning more here thn class What is the sum of the coefficients (including “1”) of the following reaction? Sodium sulfate + calcium hydroxide ??? Write the equation (double ... 
PLEASE HELP ME ! I WILL GO NUTZ IF I DONT GET ANSR
A 6sided number cube is rolled 300 times. The number 5 comes up 44 times. a. What is the theoretical probability of rolling a 5? Write your answer as a fraction in simplest form. b. What is the experimental probability of rolling a 5? Write your answer as a fraction in ... 
science
In the equation below, suppose 11 grams of Zinc (Zn) react with 12 grams of Hydrogen Chloride (2HCl) to form 16 grams of Zinc Chloride (ZnCl2) and an unknown amount of Hydrogen gas (H2). Zn + 2HCl → ZnCl2 + H2 Based on the Law of Conservation of Mass, how many grams of ... 
chemistry
A 40year old man, at a prominent legal firm experiences abdominal pain post lunch. He takes several trips to the restroom, but continues to experience pain and cramps. He decides to go to the doctor and admits he consumed 2 bottles of beer @ lunch. The alcohol content (... 
chemistry
I have absolutely no clue how to approach this question please help. The destruction of the ozone layer is an issue that is being discussed all around the world. Freons, or chlorinated hydrocarbon molecules, are very stable on the ground, but in the upper atmosphere, ... 
geometry
DIAGRAMS ARE HERE: type filedropper . c o m /diagrams (in .zip file) 1. which solid has two bases that are triangles and three lateral surfaces that are rectangles a. triangular pyramid b. rectangular prism c. triangular prism *** d. rectangular pyramid 2. a solid with two ... 
Chemistry
Propane gas (C3H8) burns completely in the presence of oxygen gas (O2) to yield carbon dioxide gas (CO2) and water vapor (H2O). Write a balanced equation for this reaction. Assuming that all volume measurements occur at the same temperature and pressure, how many liters of ... 
Chemistry
Propane gas (C3H8) burns completely in the presence of oxygen gas (O2) to yield carbon dioxide gas (CO2) and water vapor (H2O). Write a balanced equation for this reaction. Assuming that all volume measurements occur at the same temperature and pressure, how many liters of ... 
algebra
Write an equation in slopeintercept form of the line that passes through the given points: (1/2,1), (3,5/2). Also, write an equation in pointslope form of the line that passes through the given points: (6,3), (1,9). <soo sick of these.. please help!> thanks! 
Chemistry
compared to an ordinary chemical reaction, a fission reaction will 1 release smaller amounts of energy 2 release larger amounts of energy 3 absorb smaller amounts of energy 4 absorb larger amounts of energy is it 2 ? 
english
Recall that a participle is a verb form that is used an adjective. A participial phrase is a participle with its modifers and complements used as an adjective. 1. Read the following sentence. The cars passing by are filled with commuters. Which of the following sentences is ... 
Chemistry
I have a homework question that says: "Three resonance structures of the following anion are possible. One is given below, but it is incomplete. Complete the given structure by adding nonbonding electrons and formal charges. Draw the two remaining resonance structures, ... 
Qauntitative Analysis for Mgmt
Your company uses 1,500 per year of a certain subassembly that has an annual holding cost of $45 per unit. Each order placed costs $150. The company operates 300 days per year and has found that an order must be placed with the supplier 6 working days before it can expect to ... 
CHEMISTRY!! NEED IMMEDIATE HELP PLEASE!!!
a. Calculate the delta H, delta G, and equilibrium constant for the reaction of methane with Cl2 to give CH3Cl and HCl. Use the following information for your calculations: Bond Dissociation Energies: CH3H (104.8kcal/mol), ClCl(59.0 kcal/mol), CH3Cl(85.0 kcal/mol), and HCl... 
chemistry
If your favorite silver jewelry ever tarnishes and you happen to have some aluminum foil on hand, you can actually get rid of some of that tarnish. The tarnish here is actually silver sulfide. If you put the jewelry and aluminum into a dish with enough water to cover them both... 
Algebra
a. For the first company, express in words the amount the cab company charges per ride and per mile. Charge per ride: $3 per mile $0.50 b. Write an equation in slopeintercept, pointslope, or standard form. Explain why you chose the form you did. y=3+0.50? c. What do the ... 
Grammar
Adverbs modify verbs. Adjectives modify nouns. Adjective: That car is different. Adverb: He thinks differently. What happens with the following verbs and why? He looks __________ Different or differently? He sounds different or differently? The form of Different is modifying ... 
chemistry
Subject – equilibria Pure ethanoic acid (25.0cm3, CH3COOH), pure ethanol (35.0 cm3, C2H5OH) and pure water (20.0cm3, H2O) were mixed in a sealed flask at room temperature. The flask was placed in a heated water bath and maintained at 323K until equilibrium was established. ... 
chem
The experiment described in the procedure was performed using a sample of Calcium with HCl(aq). The lab conditions were 25.00°C, and 747.0 torr barometric pressure. 112.7 mg of Calcium (MM: 40.08 g/mol) was reacted with 25.00 mL of 1.25M HCl(aq). 71.560g of water was ... 
chemistry
how do I solve for: How many grams of water would be lost form 100.0grams of CuCl2 x 5H2O when the hydrated salt was heated at 1000degreesC for one hour in a crucible? What is the percent composition of water in the compound: Percentwater= 5*(2+16)/(5*18 + atomic mass Cu + 2*... 
Algebra, PLEASE HELP ME!!!
I am so lost, can anyone help me? I don't even understand what the teacher wants out of me with this problem. Suppose that a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the price to p = $10, then more people ... 
Math
Ok I'm on castle learning and for homework this weekend we have to do #14 (assignments) that is due on Saturday @ midnight because that the time it will close and I need help on this question. My assignment is: Math 7 (Q1) Assign #2  Fractions (i already did the others) Qs. ... 
Math
What is 5/9 written as a decimal? 0.45 0.4 repeating 0.5 0.5 repeating What is 0.26 written as a fraction in simplest form? 26 over 100 13 over 50 26 over 10 13 over 25 In a fraction with a denominator of 15,which value could the numerator be to produce a repeating decimal? 15... 
Chemistry
CaO(s) reacts with SO2(g) according to the following equations: CaO9(s)+So2(g)> CaSO3(g). A 8.85g mixture containing CaO(s) is placed in a 3.00L container. The container is filled with SO2(g) to a pressure of 749 torr, at 20.0 degree Celsius. After the reaction has gone ... 
Chemistry
Consider the burning of LPG (propane C3H8)which produces carbon dioxide (CO2) and water vapor (H2O). The balanced chemical equation involving the reaction is C3H8+5O2= 3CO2+4H2O Suppose 1.5 moles of C3H8 will be used, assume the following: a. How many moles of O2 will be ... 
chemistry
CaO(s) reacts with SO2(g) according to the following equations: CaO9(s)+So2(g)> CaSO3(g). A 8.85g mixture containing CaO(s) is placed in a 3.00L container. The container is filled with SO2(g) to a pressure of 749 torr, at 20.0 degree Celsius. After the reaction has gone ... 
chemistry
Predict if a precipitate will form when 20.00 mL of the 50% saturated solution is mixed with 20.00 mL of 0.0100M of the following solutions.? the saturated solution is : BaCO3, it has the Ksp of 5.1 x 10^9 the solubility is 7.1 x 10^5 M. I don't know how to do this. I am ... 
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 ... 
ChemistryPlz 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 ... 
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... 
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 ... 
chemplease 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 
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 ... 
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 ... 
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. ... 
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 ... 
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 ... 
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... 
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 halflife 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 halflife 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 3.50L 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 4.50L 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 2.00L 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 11/16" = 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. 
statistics
The distribution of grades of 50 students in a certain subject is normally distributed with a mean of 86 and a standard deviation of 12. 6. 7. If the passing grade is 75, how many failed in the subject? 
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(10.56)/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 randomlychosen 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?