What is the empirical of compound (X) going through the following decomposition reaction?

77,997 results, page 40

Chemistry

Neutralization reaction HCL(aq) + NaOH(aq) -> NaCl(s) + H2O(l) Use your results to determine the netball change of the neutralization reaction, in kJ/mol of NaOH, Write the thermochemical equation for the neutralization reaction. I'm not sure how to even go about doing this...

chemistry

calculate the half-life of a first- order reaction if the concentration of the reactant is 0.0396 M at 12 seconds after the reaction starts and is 0.00579 M at 47 after the reaction starts. How long does it take for the reactant concentration to decrease to 0.00269 M

chemistry

calculate the half-life of a first- order reaction if the concentration of the reactant is 0.0396 M at 12 seconds after the reaction starts and is 0.00579 M at 47 after the reaction starts. How long does it take for the reactant concentration to decrease to 0.00269 M

chemistry

2.241g sample of nickel reacts w oxygen to form 2.85g of the metal oxide. Calculate the empirical formula of the oxide?

Chemistry 101

Write the reaction that occurs when sodium phosphate and barium chloride react. Be sure to include the phase labels. Then write the total ionic reaction and the net ionic reaction including proper phase labels.

Chemistry

For a particular reaction, ΔH° is 20.1 kJ/mol and ΔS° is 45.9 J/(mol·K). Assuming these values change very little with temperature, over what temperature range is the reaction spontaneous in the forward direction? The reaction is spontaneous for temperatures is ...

math

the following investments require table factors for periods beyond the table, create the new table factors AND present value $31,000 (compound amount) time period is 50 years nominal rate is 5% and interest compounded annually thanks

CHEM

I posted a question earlier, and i'm still abit confused. What is the reaction between potassium and aqueous sodium chloride? I was told that the products are KOH, H2, and KCl. But shouldn't the reaction be a displacement reaction? Since Potassium is more reactive than sodium...

Chemistry

For the following reaction, 9.91 grams of sulfur are allowed to react with 20.8 grams of carbon monoxide . sulfur(s) + carbon monoxide(g) sulfur dioxide(g) + carbon(s) is the maximum amount of sulfur dioxide that can be formed? What is the FORMULA for the limiting reagent? ...

Bio

Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to their functional form...

Astronomy

Which of the following developments was most directly responsible for the creation of rockets that were capable of going to the moon? A. gunpowder B. explosives C. single-stage rockets D. multistage rockets

chemistry

Rank the following 3 compounds in terms of increasing boiling point: CCl4, CH4, CH2Cl2 - Rank the following 3 compounds in terms of increasing boiling point: CF4, CH4, CH2F2 - Water, H2O, is a liquid at room temperature. Hydrogen selenide, H2Se, is a homologue compound. At ...

Algebra

The functions f(x) and g(x) are described below: f(x) = 32x + 8 g(x) = 32x − 9 The graph of g(x) is obtained by shifting down the graph of f(x) by _____ units. Numerical Answers Expected! Answer for Blank 1: „ð Question 11 (Multiple Choice Worth 5 points) (03.01 LC) ...

Algebra

Bill drives his car 10 mph faster on the way home from work than he does going to work in rush hour. If it takes him 1 hrs. going and half an hour returning, how far away is his work?

SAT

For the SAT online course, when I was going o buy it, they asked for shipping information, so I'm confused... are they going to send me a book on the online course where afterwards I can use the online course...?

algebra

The odometer on your family car reads 20186.7 after going 62.3 miles.how many miles were on the odometer before going 62.3 miles?write an expression

science (PLEASE HELP)

Heating 1.29 g of gallium gives a gallium-oxygen compound with a mass of 1.73 g. -How many grams of oxygen are in the 1.73 grams of gallium-oxygen compound.

Chemistry

1) Balance this redox reaction using the oxidation-number method. Zn + O2 + HCl ® ZnCl2 + H2O 2) Balance this redox reaction using the half-reaction method. (basic solution) Zn + MnO4- ® Zn(OH)2 + MnO2

Chemistry

What is the difference between a forward and a reverse reaction? I am studying Lechatelier's principal and it states that with an increase in temperature it favors a reverse reaction and when the temperature decreases it favors a forward reaction. What does this mean exactly?

Chem II

The reaction A -->B---> C is called a _______ reaction? Consecutive parallel competing stepwise

Chemistry

Could you explain in detail why a saponification reaction is considered to be the reverse of an esterification reaction.

gr 12 chemistry

write an equation for a reaction involving an aldehyde to illustrate a hydrogenation reaction.

college

For the reaction P4(s) + O2(g) = P4 O10(s) Identify the limiting reaction mixture conataining 1.00 mol each of P4 and O2

chemistry

balanced reaction for reaction between ferrous sulphate and nittric acid

Chem

Why do the rate of reaction for a reversible reaction slows down at equilibrium stage.

chemistry

Given the reaction 1/2 N2( g) + 3/2 H2 (g) ___> NH3 (g) +11.0kcal.Is this reaction exothermic or endothermic?

Chemistry

What mass of N2O5 will result from the reaction of 6.0 mol of NO2 if there is a 61.2% yield in the reaction?

Chemistry

Ok, so in an when an endothermic reaction occurs, is it hot or cold? and why? Also what is it for an exothermic reaction? Thank you

Chemistry

Ok, so in an when an endothermic reaction occurs, is it hot or cold? and why? Also what is it for an exothermic reaction? Thank you

CHEMISTRY

In electrolysis , which reaction does occur on the cathode , half oxidation reaction or reduction ?

chemistry

The reaction of 9.58 g of Carbon with excess O2 yields 8.90 g of CO2, what is the percent yield of this reaction?

chemistry

if compound forms by ionic bonding, which is not true? A. a positively charged atom or group of atoms attracts a negatively charged atom or group of atoms B. the net cgare of the compound is zero C. the compund consists of just two atoms, each of opposite charge. D. several ...

chemistry

Which of the answer choices correctly describes an action that will increase the solubility of a solid solute in water? cool the solution increase the pressure heat the solution decrease the pressure Examine the statement. The energy required to break the bonds of the ...

chemistry

I had to do this online lab and have a total of 8 questions at the end and I am stuck half way through. Can someone please walk me through the last few question? Here is the Lab and my homework: In this experiment, we will determine the heat of reaction for a neutralization ...

AP Chemistry

Calculate the delta H rxn for the following reaction: CH4(g)+4Cl2(g)-->CCl4(g)+4HCl Use the following reactions and given delta H's: 1) C(s)+2H2(g)-->CH4(g) delta H= -74.6 kJ 2) C(s)+2Cl2(g)-->CCl4(g) delta H= -95.7 kJ 3) H2(g)+Cl2(g)-->2HCl(g) delta H= -184.6 kJ ...

chemistry

what is the difference between acid base reaction and oxidation reaction

Chemistry

How does the activation energy of an uncatalyzed reaction compare with that of the catalyzed reaction?

Organic Chem

What is the generic reaction equation for the Maillard reaction? Please help ^_^

chemistry

for an exotherimic reaction incresing the reaction temperature results in a (n)___k ?

Chemistry

What is the reaction between mno4- and c2o42- and is there a colour change in this reaction?

Chemistry

Show that the reaction caco3 ->cao+co2 is not a redox reaction

Chemistry

Show that the reaction caco3 ->cao+co2 is not a redox reaction

Chemistry

Tungsten metal can be produced by the reaction of tungsten oxide powder (WO3) with hydrogen gas (H2) in a reactor heated to 800oC. The by-product of the reaction is water vapor (H2O). The reactor is charged with 128.0 kg of WO3 and 41.0 kg of H2. Assume that the reaction goes ...

Grammar

Choose the correct sentence. A) Her and I are going to be good friends. B) She and I are going to be good friends. I answered B

Math

If there are 380 seniors and 29 out of every 40 plan on going to college how many plan on going to college?

physics

How far does a car going 25 m/s travel in 5s ? How far would a jet going 250 m/s travel in 5s?

Physics

I would really appreciate the help for this assignment. A small reasoning for the answer would be very helpful. Thank you. A sphere of mass m and radius r is attached to the rim of a disk (mass M, radius R). The disk is rotating counter-clockwise with a constant period T ...

English

Which of the following is a compound sentence? a. Kim will take her daughter, shopping when she learn to behave in public. b. Sue gave Jim a new racket, and he left for the tennis courts. c. Rain and heavy winds caused damage along the coast. d. We found our way home without a...

english

16. Which of the following is a compound sentence? A. Rain and heavy winds caused damage along the coast. [B. Sue gave Jim a new racket, and he left for the tennis courts.] C. We found our way home without a map. D. Kim will take her daughter shopping when she learns to behave...

English cheack answer

4. Which of the following sentences is a compound sentence? Charlie said it’s cold outside but hot in his bedroom. Jared enjoys eating eggs and bacon for breakfast. Sierra can’t decide between the blue and the black shoes. Thomas is meeting us at the park, and Heather is ...

History (black death)

Which best describes the right answer to: The Black Death first came to Europe- a) through sailors in Italian ports. or b) through merchants trading in France. I know that it was spread through ship. But the wordings that she put is so confusing....

Physics

3. What happens to the speed of ocean waves as they come close to shore? How can this be explained from what you've learned so far? (this the teacher means what do the lessons have to do with this question) 4. Sound travels faster through wood than through air. Sound also ...

Physics

3. What happens to the speed of ocean waves as they come close to shore? How can this be explained from what you've learned so far? (this the teacher means what do the lessons have to do with this question) 4. Sound travels faster through wood than through air. Sound also ...

Intro Biology

I can't find examples in the book as reference. Please help me with these questions and explain why. 1.) Which of the following has no vascular tissue (“plumbing system”)? A) Conifer B) Angiosperm C) Fern D) Moss E) Ginkgo 2.) Which of the following characteristics of ...

Chemistry

Ok I think I figured this out but im not sure if its right please help. Thanks(= Determine the oxidation number for nitrogen in each of the following a)NH3 = -3 b)NO2-1 = 2 c)N2= 2 d)NO2Cl= 2 e)N2H4= 2 The first one is right. All must add to zero for a compound OR to the ionic...

Chemistry

1.Cell respiration glucose is reacted wth oxygen in body to produce carbon dioxide and water how many liters of carbon dioxide would be produced if 90.0 g of glucose completely reacts with oxygen C6H12O6(s)+ 6O2(g) -> 6H2O(g) + 6CO2 (g) How many liters of carbon dioxide ...

English

how would i combine these sentences using compound subj. and verbs? -- They use it to produce the energy they need. your muscles need alot of oxygen. you should relax. you should move only as much as necessary. with these techniques you can train yourself to stay underwater ...

biochemistry

I am studying for a midterm. Do you know this answer? what reaction does LDH actually catalize and why is that reaction important?

Chem II

A first-order reaction is 35.5% complete in 4.90 minutes. The rate constant of the reaction is _____

chemistry

a first order reaction has a rate constant of 7.5 x 10^-3/s. The time required for th reaction to be 60% complete is

CHEM

For the reaction of HNO3 is this the reaction? Is the water liquid? 2HNO3(s)> 2NO2(g)+H2O(l)+ 1/2O2(g)

chemistry

WHAT WOULD HAPPEN TO THE REACTION THAT PRODUCES AMMONIA IF WATER IS PRESENT IN THE REACTION MIXTURE?

chemistry

For the reaction HCO3- H+ + CO32-, ΔG° = +59.0 kJ/mol at 298.15 K. Find the value of K for the reaction

chemistry

alternative reaction for acrylic acid and analyzing reaction for finding gross profit

biochemistry

The ΔG¡' of the reaction is -5.31 kJ ámolÐ1. Calculate the equilibrium constant for the reaction. (Assume a temperature of 25¡ C.)

umuc

For the reaction HCONH2(g) NH3(g) + CO(g), Kc = 4.84 at 400 K. If ΔH° for this reaction is 29 kJ/mol, find Kc at 500 K.

Chemistry

Explain, in terms of collision theory, how and why a reaction’s rate changes as the reaction progresses.

english

Are my solutions right?? 1. "There's someone knocking at the door! Who can it be at this time of night?" "___ Helen. She said she might come round to watch the midnight movie on TV." A: That's going to be; B: That'll be; C: It's due to be. I choose A and B 2."I've just ...

Chemistry

Use the equation to determine what volume of nitrous oxide can be produced from the decomposition of o.55 moles of ammonium nitrate useing the equation: NH4NO3 (s)--> N2O (g) + 2H2O (g)

Logic

Using truth tree decomposition, determine the consistency of the set of propositions. Include line numbers and justifications, and recover the truth values if consistent. {A and B, ~B v C}

Chemistry

Consider the decomposition of barium carbonate: BaCO3(s)= BaO(s) + CO2(g). Using data from Appendix C in the textbook, calculate the equilibrium pressure of CO2 at 298K.

Chmistry

For the following reaction, 4.35 grams of hydrogen gas are allowed to react with with 10.3 grams of ethylene (C2H4). hydrogen (g) + ethylene (C2H4) (g) ethane (C2H6) (g) What is the maximum amount of ethane (C2H6) that can be formed? grams What is the FORMULA for the limiting ...

English

I still have to include the following paragraph to my previous letter. Can you please check it? Thank you. 1) As to your accommodation, you have chosen a hotel which lies more than two miles from the school! 2) I think you should opt for one among the following hotels which ...

Basic algebra

Bill drives his car 10 mph faster on the way home from work than he does going to work in rush hour. If it takes him 1 hrs. going and half an hour returning, how far away is his work?

chemistry

how do you solve this? The candy indistry converts sucrose (C11H22O11,table sugar),a crystalline material, to invert sugar, a hydrolzyed [rpdict tjat os 50:50 frutose and glucose. The hydrolysis occurs in water, quite slowly, at an elevated temperature of 55¨¬C. The reaction...

chemistry

Consider the compound NOCl. In the lewis dot structure, which element should be the central atom? Choose from following. N,O,Cl,both N or O could be in middle, both N or Cl could be in the middle,both O or Cl could be in middle,or all the elements could be in middle.

Travel

Okay, I may not have been clear in my previous post. I'm doing a powerpoint on Spain for a school project. I need 4 places to visit, excluding the capital. What it's like and what to do there. Also I need 1 or 2 Festivals/Celebrations located differently than the 4 places. ...

chemistry

disappearance of NO in ...- Help!!!? The following data were collected for the rate of disappearance of NO in the reaction 2 NO(g) + O2(g) ¨ 2 NO2(g). Run: [NO](M) [O2](M) Initail Rate (M/s) 1 .0126 .0125 1.41 X 10^-2 2 .0252 .0125 5.64 X 10^-2 3 .0252 .0250 1.13 X 10^-1 (a...

chemistry

A reaction starts with 1.00 mol each of PCl3 and Cl2 in a 1.00-L flask. When equilibrium is established at 250 degree Celsius in the reaction PCl3(g)+ Cl2(g)--> PCl5(g), the amount of PCl5 present is 0.82 mol. What is Kc for this reaction?

chemistry

A 250.0 mL sample of an aqueous solution at 25 degrees Celsius contains 35.8 mg of an unknown nonelectrolyte compound. If the solution has an osmotic pressure of 11.25 mmHg, what is the molar mass of the unknown compound? a.) 237 g/mol b.) 484 g/mol c.) 351 g/mol d.) 699 g/mol...

Chemistry

H2(g) + I2(g) 2 HI(g) The forward reaction above is exothermic. At equilibrium, what happens if I2 is removed from the reaction mixture at constant temperature and volume? The reaction absorbs energy. The reaction releases energy. [H2] increases. [H2] decreases. [H2] remains ...

Chemistry

If I used 100% larger sample mass of an unknown substance what effect would that have on the empirical formula that would be obtained?

Science

Search for a Psychology journal that investigates the relationship between sleep and memory. It should include specific variables. The article must be an empirical study and peer reviewed.

science

The primary source of energy in our solar sysem is from? a) fusion reaction on the sun b) fission reaction on the sun c) fission reaction on the earth d) fission and fusion in the galaxy e) fusion reactions in comets the answer i picked was a

chemistry

I don't understnad why I got this question worng: The question asks given the following solubilities, calculate the value of the Ksp for the compound: Zinc carbonate, 3.87 x 10^-6 mol/L My answer: AnCO3 -----> Zn + CO3 There exists a 1:1 ratio between Zn and CO3 Ksp = (3.87...

chemistry

On complete oxidation, one mole of an organic compound produced four moles of water. Which one of the following substances could it be? CH4 C2H6 C3H7OH C4H10 So I added O2 to each of these compounds, but I must be doing something wrong because I can't get 4 moles of water. ...

Chmistry

For the following reaction, 4.35 grams of hydrogen gas are allowed to react with with 10.3 grams of ethylene (C2H4). hydrogen (g) + ethylene (C2H4) (g) ethane (C2H6) (g) What is the maximum amount of ethane (C2H6) that can be formed? grams What is the FORMULA for the limiting ...

Math

-1/(x^3)-27 or -1=A(x^2+3x+9)+Bx+C(x-3) I'm trying to find the partial fraction decomposition. I think A=-1/21, but how do I find the right values to plug in for x to find B and C?

Physics

for our lab, we had to fill a semi-circle plastic dish (with a scratch on one side) with water and find the index of refraction of water by putting a pin on one side of the dish, looking through the water, and put a pin on the other side of the dish to line up with the first ...

SCIENCE

I mix 300.0ml of the barium nitrate solution from 1c with 100ml of a 1.50M lithium phosphate solution. The reaction produces solid barium phosphate a. Write a balanced equation for the reaction. b. Which is my limiting reagent? c. How much barium phosphate may be produced in ...

Chemistry

Reaction: C6H11OH(l) ==> C6H10(l) + H2O(l) Calculate the mass of cyclohexanol (C6H11OH) needed to produce 45.0g cyclohexene (C6H10) by reaction if the reaction has a 86.2% yield and the cyclohexanol is 92.3% pure. Usually this problem would be fairly easy, but the purity is...

chemistry

I need the equilibrium constant for the following reaction @ 25 deg. C 2CaCO3 (calcite) + Mg2+ <==> CaMg(CO3)2 (dolomite) + Ca2+

chemistry

What is delta Hrxm dagrees for the following chemical reaction? CO2(g)+2KOH(s) = H2O(g)+K2CO3(s) Express your answer in numerically, in kJ

Ochem Lab

Suggest an appropriate reducing reagents for the following substrates and predict the reaction:(1) 2-hexanone, (2)ethyl 4-nitrobenzoate, (3) hexanal

Chemistry

Determine the total number of electrons transferred in the following balanced reaction. 4 MnO4– (aq) + 12 H3O+ (aq) → 4 Mn2+ (aq) + 5 O2 (g) + 18 H2O (g)

chemistry

Which term in the following reaction would not be included in the equilibrium expression? 2 Na3PO4 (aq) + 3 MgCl2 (aq) → 2 Mg3(PO4)2 (s) + 6 NaCl (aq)

chemistry

An unknown weak monprotic acid with the general formula HA has a Ka=5.5 x 10^-7. what is the value of the equilibrium constant that describes the following reaction? A- +H2O = HA +OH-

chemistry

balance the following equation by half reaction method in an acidic medium: C3H8O + MnO4^- gives off C3H6O + Mn^2+

chemistry

What volume of 16M HNO3 is required to dissolve 0.50g of Cu metal in the following reaction? Cu(s) + 4HNO3(aq) ---> Cu(NO3)2 + 2H2O + 2NO2

chemistry

the following reaction is endothermic; 3O2(g) = 2O3(g) If this reation is at equilibrium will it shift to the right or left if we: 1) add some oxygen

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